{"id":825,"date":"2023-01-02T10:28:00","date_gmt":"2023-01-02T10:28:00","guid":{"rendered":"https:\/\/waldunsteel.com\/?post_type=portfolio&#038;p=825"},"modified":"2023-02-14T12:17:46","modified_gmt":"2023-02-14T12:17:46","slug":"4340-acier","status":"publish","type":"portfolio","link":"https:\/\/waldunsteel.com\/fr\/products\/4340-steel\/","title":{"rendered":"Acier alli\u00e9 AISI 4340 \u2013 ASTM A29"},"content":{"rendered":"<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-262tl-164906a3659821594bc460287a72fd02\">\n.flex_column.av-262tl-164906a3659821594bc460287a72fd02{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-262tl-164906a3659821594bc460287a72fd02 av_two_third  avia-builder-el-0  el_before_av_one_third  avia-builder-el-first  first flex_column_div av-zero-column-padding'     ><section  class='av_textblock_section av-kmag0pxk-3229ee3744b77168ca05d3004bec2d26'  ><div class='avia_textblock' ><h1 style=\"text-align: center;\"><strong><b>Acier alli\u00e9 AISI 4340 \u2013 ASTM A29<\/b><\/strong><\/h1>\n<p><img decoding=\"async\" class=\"wp-image-827 size-full aligncenter\" src=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/03\/AISI-4340-steel-round-bar.jpg\" alt=\"Barre-ronde-en-acier AISI-4340\" width=\"700\" height=\"525\" srcset=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/03\/AISI-4340-steel-round-bar.jpg 700w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/03\/AISI-4340-steel-round-bar-300x225.jpg 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/p>\n<p><strong><b>WALDUN est un bon chinois <\/b><\/strong><strong><b>Fabricant et exportateur d&#039;acier AISI 4340<\/b><\/strong><strong><b>. Vous pouvez obtenir <\/b><\/strong><strong><b>fourni avec rond, carr\u00e9, plat, bloc et arbre, etc.<\/b><\/strong><strong><b>\u00a0de WALDUN<\/b><\/strong><strong><b>.<\/b><\/strong><\/p>\n<p>L&#039;acier AISI 4340 est d\u00e9fini comme un acier trait\u00e9 thermiquement et faiblement alli\u00e9 qui a 0.8% Cr, 0.2% Mo et 1.8% Ni comme \u00e9l\u00e9ments d&#039;alliage de renforcement.Compar\u00e9 \u00e0 AISI 4140, il a une r\u00e9sistance et une t\u00e9nacit\u00e9 plus \u00e9lev\u00e9es, ainsi qu&#039;une tr\u00e8s bonne r\u00e9sistance \u00e0 la fatigue , r\u00e9sistance \u00e0 l&#039;usure et r\u00e9sistance \u00e0 la corrosion atmosph\u00e9rique.L&#039;acier AISI 4340 est g\u00e9n\u00e9ralement fourni dans un \u00e9tat tremp\u00e9 et revenu avec une plage de traction de 930 \u00e0 1080 Mpa, duret\u00e9 280-320HB. par nitruration.<\/p>\n<p>L&#039;acier 4340 peut \u00eatre utilis\u00e9 pour les exigences de bonne t\u00e9nacit\u00e9, de haute r\u00e9sistance, ainsi que de grande taille de pi\u00e8ces tremp\u00e9es importantes, telles que l&#039;arbre de charge \u00e9lev\u00e9e de machinerie lourde, l&#039;arbre de turbine de diam\u00e8tre sup\u00e9rieur \u00e0 250 mm, l&#039;arbre de rotor d&#039;h\u00e9licopt\u00e8re, l&#039;arbre de turbine de turbor\u00e9acteur, lame, pi\u00e8ces de transmission \u00e0 charge \u00e9lev\u00e9e, fixations de vilebrequin. Engrenages, etc .; L&#039;acier 4340 peut \u00e9galement \u00eatre utilis\u00e9 pour une temp\u00e9rature de fonctionnement de plus de 400 \u2103 d&#039;arbre de rotor et de pale, etc. peut \u00e9galement \u00eatre un traitement de nitruration, utilis\u00e9 pour fabriquer des exigences de performance sp\u00e9ciales de pi\u00e8ces importantes, apr\u00e8s un revenu \u00e0 basse temp\u00e9rature ou une trempe isotherme peut \u00eatre utilis\u00e9 pour l&#039;acier \u00e0 tr\u00e8s haute r\u00e9sistance.<\/p>\n<h2><strong><b>Acier 4340 <\/b><\/strong><strong><b>Formulaire d&#039;approvisionnement et taille et tol\u00e9rance<\/b><\/strong><\/h2>\n<p>L&#039;acier 4340 est un alliage \u00e0 haute r\u00e9sistance fr\u00e9quemment utilis\u00e9 dans l&#039;industrie a\u00e9rospatiale. Il offre une excellente t\u00e9nacit\u00e9 et r\u00e9sistance, ce qui le rend id\u00e9al pour les applications o\u00f9 les niveaux de stress \u00e9lev\u00e9s sont une pr\u00e9occupation. L&#039;acier 4340 est disponible dans une vari\u00e9t\u00e9 de formes, de tailles et de tol\u00e9rances diff\u00e9rentes. En cons\u00e9quence, il peut \u00eatre facilement adapt\u00e9 pour r\u00e9pondre aux besoins sp\u00e9cifiques de tout projet. L&#039;acier 4340 est un excellent choix pour toute application o\u00f9 la r\u00e9sistance et la durabilit\u00e9 sont une priorit\u00e9.<\/p>\n<table>\n<tbody>\n<tr>\n<td>Formulaire d&#039;approvisionnement<\/td>\n<td>Taille (mm)<\/td>\n<td>Traiter<\/td>\n<td colspan=\"2\">Tol\u00e9rance<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"5\">Rond<\/td>\n<td>\u03a66-\u03a6100<\/td>\n<td>\u00c9tir\u00e9 \u00e0 froid<\/td>\n<td>Noir brillant<\/td>\n<td>Meilleur H11<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"2\">\u03a616-\u03a6350<\/td>\n<td rowspan=\"2\">Lamin\u00e9 \u00e0 chaud<\/td>\n<td>Noir<\/td>\n<td>-0 \/ + 1 mm<\/td>\n<\/tr>\n<tr>\n<td>Pel\u00e9 \/ moulu<\/td>\n<td>Meilleur H11<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"2\">\u03a690-\u03a61000<\/td>\n<td rowspan=\"2\">Forg\u00e9 \u00e0 chaud<\/td>\n<td>Noir<\/td>\n<td>-0 \/ + 5 mm<\/td>\n<\/tr>\n<tr>\n<td>Rugueux tourn\u00e9<\/td>\n<td>-0 \/ + 3 mm<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"2\">Plat \/ carr\u00e9 \/ bloc<\/td>\n<td>\u00c9paisseur: 120-800<\/td>\n<td rowspan=\"2\">Forg\u00e9 \u00e0 chaud<\/td>\n<td>Noir<\/td>\n<td>-0 \/ + 8 mm<\/td>\n<\/tr>\n<tr>\n<td>Largeur: 120-1500<\/td>\n<td>Rugueux usin\u00e9<\/td>\n<td>-0 \/ + 3 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Remarque: la tol\u00e9rance peut \u00eatre personnalis\u00e9e selon les demandes<\/p>\n<h2><strong><b>Acier 4340 <\/b><\/strong><strong><b>Composition chimique<\/b><\/strong><\/h2>\n<p>L&#039;acier 4340 est un acier alli\u00e9 au chrome-molybd\u00e8ne qui offre un excellent \u00e9quilibre entre r\u00e9sistance, t\u00e9nacit\u00e9 et r\u00e9sistance \u00e0 l&#039;usure. Le nom 4340 vient du fait qu&#039;il a une composition chimique en acier 4340. 4340 a une teneur en carbone de 0,38-0,43%, une teneur en mangan\u00e8se de 0,60-0,80%, une teneur en chrome de 0,80-1,10%, une teneur en molybd\u00e8ne de 0,15-0,25%, une teneur en silicium de 0,15-0,35%, une teneur en soufre de 0,040%, et une teneur en phosphore de 0,040%. 4340 contient \u00e9galement des traces d&#039;autres \u00e9l\u00e9ments, notamment du cuivre, du nickel et de l&#039;aluminium. L&#039;acier 4340 offre un excellent \u00e9quilibre entre r\u00e9sistance et t\u00e9nacit\u00e9 et est utilis\u00e9 dans une vari\u00e9t\u00e9 d&#039;applications, y compris les engrenages, les arbres, les boulons et les goujons. Le 4340 est \u00e9galement souvent utilis\u00e9 dans l&#039;industrie a\u00e9rospatiale pour les trains d&#039;atterrissage, les aubes de turbine et d&#039;autres applications \u00e0 haute r\u00e9sistance.<\/p>\n<table>\n<tbody>\n<tr>\n<td>Standard<\/td>\n<td>Classe<\/td>\n<td>C<\/td>\n<td>Si<\/td>\n<td>Mn<\/td>\n<td>P<\/td>\n<td>S<\/td>\n<td>Cr<\/td>\n<td>Ni<\/td>\n<td>Mo<\/td>\n<\/tr>\n<tr>\n<td>ASTM A29<\/td>\n<td>4340<\/td>\n<td>0,38-0,43<\/td>\n<td>0,15-0,35<\/td>\n<td>0,6-0,8<\/td>\n<td>\u2264 0,035<\/td>\n<td>\u2264 0,04<\/td>\n<td>0,7-0,9<\/td>\n<td>1,65-2,0<\/td>\n<td>0,2-0,3<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"2\">EN10250<\/td>\n<td>36CrNiMo4<\/td>\n<td rowspan=\"2\">0,32-0,4<\/td>\n<td rowspan=\"2\">\u2264 0,4<\/td>\n<td rowspan=\"2\">0,5-0,8<\/td>\n<td rowspan=\"2\">\u2264 0,035<\/td>\n<td rowspan=\"2\">\u2264 0,035<\/td>\n<td rowspan=\"2\">0,9-1,2<\/td>\n<td rowspan=\"2\">0,90-1,2<\/td>\n<td rowspan=\"2\">0,15-0,3<\/td>\n<\/tr>\n<tr>\n<td>1.6511<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"2\">BS 970<\/td>\n<td>EN24<\/td>\n<td rowspan=\"2\">0,36-0,44<\/td>\n<td rowspan=\"2\">0,1-0,4<\/td>\n<td rowspan=\"2\">0,45-0,7<\/td>\n<td rowspan=\"2\">\u2264 0,035<\/td>\n<td rowspan=\"2\">\u2264 0,04<\/td>\n<td rowspan=\"2\">1,0-1,4<\/td>\n<td rowspan=\"2\">1.3-1.7<\/td>\n<td rowspan=\"2\">0,2-0,35<\/td>\n<\/tr>\n<tr>\n<td>817M40<\/td>\n<\/tr>\n<tr>\n<td>JIS G4103<\/td>\n<td>SNCM439<\/td>\n<td>0,36-0,43<\/td>\n<td>0,15-0,35<\/td>\n<td>0,6-0,9<\/td>\n<td>\u2264 0,03<\/td>\n<td>\u2264 0,03<\/td>\n<td>0,6-1,0<\/td>\n<td>1,6-2,0<\/td>\n<td>0,15-0,3<\/td>\n<\/tr>\n<tr>\n<td>GB 3077<\/td>\n<td>40CrNiMoA<\/td>\n<td>0,37-0,44<\/td>\n<td>0,17-0,37<\/td>\n<td>0,5-0,8<\/td>\n<td>\u2264 0,025<\/td>\n<td>\u2264 0,025<\/td>\n<td>0,6-0,9<\/td>\n<td>1,25-1,65<\/td>\n<td>0,15-0,25<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><strong><b>Acier 4340 <\/b><\/strong><strong><b>Propri\u00e9t\u00e9 physique<\/b><\/strong><\/h2>\n<p>Les aciers 4340 sont des aciers alli\u00e9s \u00e0 moyenne teneur en carbone nickel-chrome-molybd\u00e8ne. Cet alliage est forg\u00e9 \u00e0 une temp\u00e9rature de d\u00e9part d&#039;environ 2250\u02daF (1230\u02daC). L&#039;acier 4340 a une excellente r\u00e9sistance aux chocs et aux impacts ainsi qu&#039;une r\u00e9sistance \u00e0 la fatigue, une t\u00e9nacit\u00e9 et une ductilit\u00e9. 4340 peut acqu\u00e9rir une r\u00e9sistance \u00e9lev\u00e9e par traitement thermique. Et 4340 est connu pour sa capacit\u00e9 \u00e0 supporter de lourdes charges \u00e0 des temp\u00e9ratures \u00e9lev\u00e9es. 4340 a \u00e9galement une bonne usinabilit\u00e9 et soudabilit\u00e9. Les aciers alli\u00e9s 4340 sont largement utilis\u00e9s dans les trains d&#039;atterrissage des avions en raison de leur r\u00e9sistance et de leur t\u00e9nacit\u00e9 ultra-\u00e9lev\u00e9es. Le 4340 est \u00e9galement fr\u00e9quemment utilis\u00e9 dans la production de voitures de course en raison de son rapport r\u00e9sistance\/poids \u00e9lev\u00e9. Le 4340 peut \u00eatre nitrur\u00e9 pour donner un bo\u00eetier \u00e0 surface dure avec un noyau dur. 4340 peut \u00e9galement \u00eatre durci par pr\u00e9cipitation pour obtenir une vari\u00e9t\u00e9 de r\u00e9sistances tout en conservant une bonne t\u00e9nacit\u00e9 et ductilit\u00e9. Le 4340 trouve des applications dans une grande vari\u00e9t\u00e9 d&#039;industries, notamment les secteurs de l&#039;automobile, de l&#039;a\u00e9rospatiale et de l&#039;\u00e9nergie. 4340 est disponible sous forme standard et transform\u00e9e.<\/p>\n<table>\n<tbody>\n<tr>\n<td>Densit\u00e9 g \/ cm3<\/td>\n<td colspan=\"5\">7.85<\/td>\n<\/tr>\n<tr>\n<td>Point de fusion \u00b0 C<\/td>\n<td colspan=\"5\">1427<\/td>\n<\/tr>\n<tr>\n<td>Coefficient de Poisson<\/td>\n<td colspan=\"5\">0,27-0,30<\/td>\n<\/tr>\n<tr>\n<td>Usinabilit\u00e9 (AISI 1212 comme usinabilit\u00e9 100%)<\/td>\n<td colspan=\"5\">50%<\/td>\n<\/tr>\n<tr>\n<td>Coefficient de dilatation thermique \u00b5m \/ m \u00b0 C<\/td>\n<td colspan=\"5\">12.5<\/td>\n<\/tr>\n<tr>\n<td>Conductivit\u00e9 thermique W \/ (mK)<\/td>\n<td colspan=\"5\">44.5<\/td>\n<\/tr>\n<tr>\n<td>Module d&#039;\u00e9lasticit\u00e9 10 ^ 3 N \/ mm ^ 2<\/td>\n<td colspan=\"5\">210<\/td>\n<\/tr>\n<tr>\n<td>R\u00e9sistivit\u00e9 \u00e9lectrique Ohm.mm2 \/ m<\/td>\n<td colspan=\"5\">0.19<\/td>\n<\/tr>\n<tr>\n<td>Capacit\u00e9 thermique sp\u00e9cifique J \/ (kg.K)<\/td>\n<td colspan=\"5\">460<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"2\">Module d&#039;\u00e9lasticit\u00e9 10 ^ 3 N \/ mm2<\/td>\n<td>100 \u2103<\/td>\n<td>200 \u2103<\/td>\n<td>300 \u2103<\/td>\n<td>400 \u2103<\/td>\n<td>500 \u2103<\/td>\n<\/tr>\n<tr>\n<td>205<\/td>\n<td>195<\/td>\n<td>185<\/td>\n<td>175<\/td>\n<td>165<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"2\">Dilatation thermique 10 ^ 6 m \/ (mK)<\/td>\n<td>100 \u2103<\/td>\n<td>200 \u2103<\/td>\n<td>300 \u2103<\/td>\n<td>400 \u2103<\/td>\n<td>500 \u2103<\/td>\n<\/tr>\n<tr>\n<td>11.1<\/td>\n<td>12.1<\/td>\n<td>12.9<\/td>\n<td>13.5<\/td>\n<td>13.9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><strong><b>Acier 4340 <\/b><\/strong><strong><b>Propri\u00e9t\u00e9 m\u00e9canique<\/b><\/strong><\/h2>\n<p>L&#039;acier 4340 est un acier alli\u00e9 au chrome-molybd\u00e8ne qui offre une combinaison optimale de r\u00e9sistance, de t\u00e9nacit\u00e9, de r\u00e9sistance \u00e0 l&#039;usure et de r\u00e9sistance \u00e0 la corrosion. Les propri\u00e9t\u00e9s qui font de l&#039;acier 4340 un excellent choix pour les applications structurelles incluent une bonne ductilit\u00e9, soudabilit\u00e9 et usinabilit\u00e9. La conductivit\u00e9 thermique \u00e9lev\u00e9e de l&#039;acier 4340 est \u00e9galement importante pour les applications a\u00e9rospatiales. L&#039;acier alli\u00e9 4340 est trait\u00e9 thermiquement \u00e0 des niveaux de r\u00e9sistance \u00e9lev\u00e9s et est fr\u00e9quemment utilis\u00e9 dans les avions et les moteurs \u00e0 turbine \u00e0 gaz industriels. Les aciers alli\u00e9s 4340 peuvent \u00eatre command\u00e9s avec une grande vari\u00e9t\u00e9 de traitements thermiques, y compris normalis\u00e9s, recuits, pr\u00e9-durcis, tremp\u00e9s et revenus. L&#039;acier 4340 peut \u00e9galement \u00eatre nitrur\u00e9 pour les propri\u00e9t\u00e9s d&#039;usure et de duret\u00e9 de surface. D&#039;autres applications importantes pour l&#039;acier alli\u00e9 4340 comprennent les pi\u00e8ces forg\u00e9es pour les pi\u00e8ces d&#039;avion et les composants du groupe motopropulseur\u00a0; anneaux roul\u00e9s sans soudure; arbres; coli; hydraulique; engrenages\u00a0; pignons\u00a0; tiges de soupapes; porte-outils; douilles; tiges de piston; broches; Vis \u00e0 billes; vis-m\u00e8res; arbres de pompe et si\u00e8ges d&#039;engrenage. Les aciers alli\u00e9s 4340 sont disponibles dans de nombreuses tailles standard et sous forme de stock, telles que des barres rondes, des plats, des carr\u00e9s, des bandes et des plaques.<\/p>\n<table>\n<tbody>\n<tr>\n<td>Condition m\u00e9canique<\/td>\n<td>T<\/td>\n<td>U<\/td>\n<td>V<\/td>\n<td>W<\/td>\n<td>X<\/td>\n<td>Oui<\/td>\n<td>Z<\/td>\n<\/tr>\n<tr>\n<td>Section de d\u00e9cision (mm)<\/td>\n<td>150<\/td>\n<td>100<\/td>\n<td>63<\/td>\n<td>30<\/td>\n<td>30<\/td>\n<td>30<\/td>\n<td>30<\/td>\n<\/tr>\n<tr>\n<td>R\u00e9sistance \u00e0 la traction Mpa<\/td>\n<td>850-1000<\/td>\n<td>930-1080<\/td>\n<td>1000-1150<\/td>\n<td>1080-1230<\/td>\n<td>11h50-13h00<\/td>\n<td>12h30-13h80<\/td>\n<td>&gt;1550<\/td>\n<\/tr>\n<tr>\n<td>Limite d&#039;\u00e9lasticit\u00e9, Mpa<\/td>\n<td>\u2265665<\/td>\n<td>\u2265740<\/td>\n<td>\u2265835<\/td>\n<td>\u2265925<\/td>\n<td>\u22651005<\/td>\n<td>\u22651080<\/td>\n<td>\u22651125<\/td>\n<\/tr>\n<tr>\n<td>Allongement %<\/td>\n<td>\u226513<\/td>\n<td>\u226512<\/td>\n<td>\u226512<\/td>\n<td>\u226511<\/td>\n<td>\u226510<\/td>\n<td>\u226510<\/td>\n<td>\u22655<\/td>\n<\/tr>\n<tr>\n<td>Izod Impact J<\/td>\n<td>\u226554<\/td>\n<td>\u226547<\/td>\n<td>\u226547<\/td>\n<td>\u226541<\/td>\n<td>\u226534<\/td>\n<td>\u226524<\/td>\n<td>\u226510<\/td>\n<\/tr>\n<tr>\n<td>Charpy Impact J<\/td>\n<td>\u226550<\/td>\n<td>\u226542<\/td>\n<td>\u226542<\/td>\n<td>\u226535<\/td>\n<td>\u226528<\/td>\n<td>\u226520<\/td>\n<td>\u22659<\/td>\n<\/tr>\n<tr>\n<td>Duret\u00e9 Brinell HB<\/td>\n<td>248-302<\/td>\n<td>269-331<\/td>\n<td>293-352<\/td>\n<td>311-375<\/td>\n<td>341-401<\/td>\n<td>363-429<\/td>\n<td>&gt;444<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><strong><b>Acier 4340 <\/b><\/strong><strong><b>R\u00e9sistance \u00e0 haute temp\u00e9rature<\/b><\/strong><\/h2>\n<table>\n<tbody>\n<tr>\n<td colspan=\"8\">Pour les pi\u00e8ces forg\u00e9es lourdes tremp\u00e9es et revenus<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"2\">Diam\u00e8tre mm<\/td>\n<td colspan=\"7\">Limite d&#039;\u00e9lasticit\u00e9 MPa<\/td>\n<\/tr>\n<tr>\n<td>20 \u2103<\/td>\n<td>100 \u2103<\/td>\n<td>200 \u2103<\/td>\n<td>250 \u2103<\/td>\n<td>300 \u2103<\/td>\n<td>350 \u2103<\/td>\n<td>400 \u2103<\/td>\n<\/tr>\n<tr>\n<td>\u2264250<\/td>\n<td>590<\/td>\n<td>549<\/td>\n<td>510<\/td>\n<td>481<\/td>\n<td>441<\/td>\n<td>412<\/td>\n<td>371<\/td>\n<\/tr>\n<tr>\n<td>250-500<\/td>\n<td>540<\/td>\n<td>505<\/td>\n<td>471<\/td>\n<td>451<\/td>\n<td>412<\/td>\n<td>383<\/td>\n<td>353<\/td>\n<\/tr>\n<tr>\n<td>500-750<\/td>\n<td>490<\/td>\n<td>466<\/td>\n<td>441<\/td>\n<td>422<\/td>\n<td>392<\/td>\n<td>363<\/td>\n<td>343<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><strong><b>Acier 4340 <\/b><\/strong><strong><b>Forgeage<\/b><\/strong><\/h2>\n<p>La temp\u00e9rature de forgeage doit \u00eatre effectu\u00e9e entre 1150 \u2103 -1200 \u2103, plus la temp\u00e9rature de fin de forgeage est basse, plus la taille du grain est fine. \u00b0 C. L&#039;AISI 4340 a de bonnes caract\u00e9ristiques de forgeage, mais une fissure se produit facilement lors d&#039;un refroidissement incorrect apr\u00e8s le forgeage, il doit donc \u00eatre refroidi aussi lentement que possible dans l&#039;air calme ou dans le sable apr\u00e8s le forgeage.<\/p>\n<h2><strong><b>Acier 4340 <\/b><\/strong><strong><b>Normaliser<\/b><\/strong><\/h2>\n<p>La normalisation est utilis\u00e9e pour affiner la structure des pi\u00e8ces forg\u00e9es qui auraient pu refroidir de mani\u00e8re non uniforme apr\u00e8s forgeage, et consid\u00e9r\u00e9e comme un traitement de conditionnement avant le traitement thermique final.La temp\u00e9rature de normalisation pour l&#039;acier AISI 4340 doit \u00eatre effectu\u00e9e entre 850 \u2103 -880 \u2103. maintenir le temps appropri\u00e9 pour que l&#039;acier soit compl\u00e8tement chauff\u00e9 pour terminer la transformation du ferrite en aust\u00e9nite. Refroidir \u00e0 l&#039;air calme.<\/p>\n<h2><strong><b>Acier 4340 <\/b><\/strong><strong><b>Recuit<\/b><\/strong><\/h2>\n<p>Un recuit complet est recommand\u00e9 pour AISI 4340 avant l&#039;usinage, AISI 4340 doit \u00eatre port\u00e9 \u00e0 une temp\u00e9rature nominale de 830 \u2103 -850 \u2103, maintenir le temps appropri\u00e9 pour que l&#039;acier soit compl\u00e8tement chauff\u00e9, puis refroidir le four \u00e0 610 \u2103 \u00e0 une vitesse de 11 \u2103 par heure, enfin refroidissement par air.<\/p>\n<h2><strong><b>Acier 4340 <\/b><\/strong><strong><b>Durcissement<\/b><\/strong><\/h2>\n<p>Ce traitement thermique obtiendra une structure martensite apr\u00e8s trempe.Il augmentera la duret\u00e9 et la r\u00e9sistance de la surface.AISI 4340 doit \u00eatre effectu\u00e9 entre 830 \u2103 -865 \u2103, maintenez le temps appropri\u00e9 pour que l&#039;acier soit compl\u00e8tement chauff\u00e9, laissez tremper pendant 10-15 minutes par Section de 25 mm, une trempe \u00e0 l&#039;huile est recommand\u00e9e. La trempe doit \u00eatre suivie imm\u00e9diatement apr\u00e8s la trempe.<\/p>\n<h2><strong><b>Acier 4340 <\/b><\/strong><strong><b>Trempe<\/b><\/strong><\/h2>\n<p>L&#039;acier alli\u00e9 AISI 4340 doit \u00eatre \u00e0 l&#039;\u00e9tat trait\u00e9 thermiquement ou normalis\u00e9 et trait\u00e9 thermiquement avant le revenu.<strong><b>\u00a0<\/b><\/strong>est g\u00e9n\u00e9ralement effectu\u00e9e pour soulager les contraintes du processus de durcissement, mais principalement pour obtenir la duret\u00e9 et les propri\u00e9t\u00e9s m\u00e9caniques requises. La temp\u00e9rature de revenu r\u00e9elle sera choisie pour r\u00e9pondre aux propri\u00e9t\u00e9s requises.Elle est g\u00e9n\u00e9ralement effectu\u00e9e \u00e0 450 \u2103 - 660 \u2103, maintenez jusqu&#039;\u00e0 ce que la temp\u00e9rature soit uniforme dans toute la section, trempez pendant 1 heure par 25 mm de section et refroidissez \u00e0 l&#039;air calme. Un revenu entre 250 \u2103 -450 \u2103 n&#039;est pas \u00e9vit\u00e9 car un revenu dans cette plage r\u00e9duira s\u00e9rieusement la valeur d&#039;impact, entra\u00eenant une fragilit\u00e9 du revenu.<\/p>\n<h2><strong><b>Acier 4340 <\/b><\/strong><strong><b>Application<\/b><\/strong><\/h2>\n<p>AISI 4340 est souvent utilis\u00e9 de pr\u00e9f\u00e9rence \u00e0 AISI 4140 aux niveaux de r\u00e9sistance les plus \u00e9lev\u00e9s en raison de sa meilleure trempabilit\u00e9 et de sa meilleure r\u00e9sistance aux chocs CVN.<\/p>\n<p>Les applications typiques incluent: essieux, arbres, engrenages lourds, broches, goupilles, goujons, collets, boulons, accouplements, pignons, pignons, barres de torsion, bielles, barres de renfort, pi\u00e8ces de convoyeur, vilebrequins hydrauliques forg\u00e9s, en acier forg\u00e9 etc.<\/p>\n<\/div><\/section><br \/>\n<div  class='hr av-btzih-2bb6995d020de591c153deab87cb12b0 hr-default  avia-builder-el-2  el_after_av_textblock  el_before_av_portfolio  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grid-entry-overview grid-loop-7 grid-parity-odd  alloysteel_sort  av_one_third first default_av_fullwidth'><article class='main_color inner-entry' ><a href=\"https:\/\/waldunsteel.com\/fr\/products\/c60r-1-1223-special-steel\/\" title='C60R \/ 1.1223 Acier sp\u00e9cial'  data-rel='grid-1' class='grid-image avia-hover-fx'> <img decoding=\"async\" fetchpriority=\"high\" width=\"260\" height=\"185\" src=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/08\/Steel-C60r-1-1223-Bar-or-Rod-for-Project-260x185.jpg\" class=\"wp-image-1810 avia-img-lazy-loading-not-1810 attachment-portfolio_small size-portfolio_small wp-post-image\" alt=\"Steel-C60r-1-1223-Bar-or-Rod-for-Project\" \/><\/a><div class='grid-content'><div class='avia-arrow'><\/div><header class=\"entry-content-header\" aria-label=\"Portefeuille : Acier sp\u00e9cial C60R \/ 1.1223\"><h3 class='grid-entry-title entry-title' ><a href='https:\/\/waldunsteel.com\/fr\/products\/c60r-1-1223-special-steel\/' title='C60R \/ 1.1223 Acier sp\u00e9cial'>C60R \/ 1.1223 Acier sp\u00e9cial<\/a><\/h3><\/header><\/div><footer class=\"entry-footer\"><\/footer><\/article><\/div><div data-ajax-id='1804' class='grid-entry flex_column isotope-item all_sort no_margin post-entry post-entry-1804 grid-entry-overview grid-loop-8 grid-parity-even  alloysteel_sort  av_one_third  default_av_fullwidth'><article class='main_color inner-entry' ><a href=\"https:\/\/waldunsteel.com\/fr\/products\/c60e-1-1221-special-steel\/\" title='C60E \/ 1.1221 Acier sp\u00e9cial'  data-rel='grid-1' class='grid-image avia-hover-fx'> <img decoding=\"async\" fetchpriority=\"high\" width=\"260\" height=\"185\" src=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/08\/C60-steel-260x185.webp\" class=\"wp-image-1805 avia-img-lazy-loading-not-1805 attachment-portfolio_small size-portfolio_small wp-post-image\" alt=\"C60-acier\" \/><\/a><div class='grid-content'><div class='avia-arrow'><\/div><header class=\"entry-content-header\" aria-label=\"Portefeuille : Acier sp\u00e9cial C60E \/ 1.1221\"><h3 class='grid-entry-title entry-title' ><a href='https:\/\/waldunsteel.com\/fr\/products\/c60e-1-1221-special-steel\/' title='C60E \/ 1.1221 Acier sp\u00e9cial'>C60E \/ 1.1221 Acier sp\u00e9cial<\/a><\/h3><\/header><\/div><footer class=\"entry-footer\"><\/footer><\/article><\/div><div data-ajax-id='1800' class='grid-entry flex_column isotope-item all_sort no_margin post-entry post-entry-1800 grid-entry-overview grid-loop-9 grid-parity-odd  alloysteel_sort  av_one_third  default_av_fullwidth'><article class='main_color inner-entry' ><a href=\"https:\/\/waldunsteel.com\/fr\/products\/c35e-1-1181-special-steel\/\" title='C35E \/ 1.1181 Acier sp\u00e9cial'  data-rel='grid-1' class='grid-image avia-hover-fx'> <img decoding=\"async\" fetchpriority=\"high\" width=\"260\" height=\"185\" src=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/08\/C35-steel-630x320-1-260x185.jpg\" class=\"wp-image-1801 avia-img-lazy-loading-not-1801 attachment-portfolio_small size-portfolio_small wp-post-image\" alt=\"C35E \/ 1.1181 Acier sp\u00e9cial\" \/><\/a><div class='grid-content'><div class='avia-arrow'><\/div><header class=\"entry-content-header\" aria-label=\"Portefeuille : Acier sp\u00e9cial C35E \/ 1.1181\"><h3 class='grid-entry-title entry-title' ><a href='https:\/\/waldunsteel.com\/fr\/products\/c35e-1-1181-special-steel\/' title='C35E \/ 1.1181 Acier sp\u00e9cial'>C35E \/ 1.1181 Acier sp\u00e9cial<\/a><\/h3><\/header><\/div><footer class=\"entry-footer\"><\/footer><\/article><\/div><div data-ajax-id='1783' class='grid-entry flex_column isotope-item all_sort no_margin post-entry post-entry-1783 grid-entry-overview grid-loop-10 grid-parity-even  alloysteel_sort  av_one_third first default_av_fullwidth'><article class='main_color inner-entry' ><a href=\"https:\/\/waldunsteel.com\/fr\/products\/50crmo4-1-7228-steel\/\" title='50CrMo4 \/ 1.7228 Acier'  data-rel='grid-1' class='grid-image avia-hover-fx'> <img decoding=\"async\" fetchpriority=\"high\" width=\"260\" height=\"185\" src=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/08\/50crmo4-1.7228-steel1_\u526f\u672c-1-260x185.jpg\" class=\"wp-image-1788 avia-img-lazy-loading-not-1788 attachment-portfolio_small size-portfolio_small wp-post-image\" alt=\"50crmo4 1.7228 acier(1)_\u526f\u672c\" srcset=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/08\/50crmo4-1.7228-steel1_\u526f\u672c-1-260x185.jpg 260w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/08\/50crmo4-1.7228-steel1_\u526f\u672c-1-16x12.jpg 16w\" sizes=\"(max-width: 260px) 100vw, 260px\" \/><\/a><div class='grid-content'><div class='avia-arrow'><\/div><header class=\"entry-content-header\" aria-label=\"Portefeuille : Acier 50CrMo4 \/ 1.7228\"><h3 class='grid-entry-title entry-title' ><a href='https:\/\/waldunsteel.com\/fr\/products\/50crmo4-1-7228-steel\/' title='50CrMo4 \/ 1.7228 Acier'>50CrMo4 \/ 1.7228 Acier<\/a><\/h3><\/header><\/div><footer class=\"entry-footer\"><\/footer><\/article><\/div><div data-ajax-id='1778' class='grid-entry flex_column isotope-item all_sort no_margin post-entry post-entry-1778 grid-entry-overview grid-loop-11 grid-parity-odd  alloysteel_sort  av_one_third  default_av_fullwidth'><article class='main_color inner-entry' ><a href=\"https:\/\/waldunsteel.com\/fr\/products\/41crs4-1-7039-steel\/\" title='41CrS4 \/ 1.7039 Acier'  data-rel='grid-1' class='grid-image avia-hover-fx'> <img decoding=\"async\" fetchpriority=\"high\" width=\"260\" height=\"185\" src=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/08\/41CrS4-1.7039-Steel-260x185.jpg\" class=\"wp-image-1779 avia-img-lazy-loading-not-1779 attachment-portfolio_small size-portfolio_small wp-post-image\" alt=\"41CrS4 1.7039 Acier\" srcset=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/08\/41CrS4-1.7039-Steel-260x185.jpg 260w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/08\/41CrS4-1.7039-Steel-18x12.jpg 18w\" sizes=\"(max-width: 260px) 100vw, 260px\" \/><\/a><div class='grid-content'><div class='avia-arrow'><\/div><header class=\"entry-content-header\" aria-label=\"Portefeuille : Acier 41CrS4 \/ 1.7039\"><h3 class='grid-entry-title entry-title' ><a href='https:\/\/waldunsteel.com\/fr\/products\/41crs4-1-7039-steel\/' title='41CrS4 \/ 1.7039 Acier'>41CrS4 \/ 1.7039 Acier<\/a><\/h3><\/header><\/div><footer class=\"entry-footer\"><\/footer><\/article><\/div><div data-ajax-id='1774' class='grid-entry flex_column isotope-item all_sort no_margin post-entry post-entry-1774 grid-entry-overview grid-loop-12 grid-parity-even  alloysteel_sort  av_one_third  default_av_fullwidth'><article class='main_color inner-entry' ><a href=\"https:\/\/waldunsteel.com\/fr\/products\/35nicr6-1-5815-steel\/\" title='Acier 35NiCr6 \/ 1.5815'  data-rel='grid-1' class='grid-image avia-hover-fx'> <img decoding=\"async\" fetchpriority=\"high\" width=\"260\" height=\"185\" src=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/08\/35NiCr6-1.5815-Steel-260x185.png\" class=\"wp-image-1775 avia-img-lazy-loading-not-1775 attachment-portfolio_small size-portfolio_small wp-post-image\" alt=\"Acier 35NiCr6 1.5815\" \/><\/a><div class='grid-content'><div class='avia-arrow'><\/div><header class=\"entry-content-header\" aria-label=\"Portefeuille : Acier 35NiCr6 \/ 1.5815\"><h3 class='grid-entry-title entry-title' ><a href='https:\/\/waldunsteel.com\/fr\/products\/35nicr6-1-5815-steel\/' title='Acier 35NiCr6 \/ 1.5815'>Acier 35NiCr6 \/ 1.5815<\/a><\/h3><\/header><\/div><footer class=\"entry-footer\"><\/footer><\/article><\/div><div data-ajax-id='1770' class='grid-entry flex_column isotope-item all_sort no_margin post-entry post-entry-1770 grid-entry-overview grid-loop-13 grid-parity-odd  alloysteel_sort  av_one_third first default_av_fullwidth'><article class='main_color inner-entry' ><a href=\"https:\/\/waldunsteel.com\/fr\/products\/30nicrmo16-6-1-6747-steel\/\" title='Acier 30NiCrMo16-6 \/ 1.6747'  data-rel='grid-1' class='grid-image avia-hover-fx'> <img decoding=\"async\" fetchpriority=\"high\" width=\"260\" height=\"185\" src=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/08\/30NiCrMo16-6-1.6747-Steel-260x185.jpg\" class=\"wp-image-1771 avia-img-lazy-loading-not-1771 attachment-portfolio_small size-portfolio_small wp-post-image\" alt=\"30NiCrMo16-6 1.6747 Acier\" srcset=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/08\/30NiCrMo16-6-1.6747-Steel-260x185.jpg 260w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/08\/30NiCrMo16-6-1.6747-Steel-16x12.jpg 16w\" sizes=\"(max-width: 260px) 100vw, 260px\" \/><\/a><div class='grid-content'><div class='avia-arrow'><\/div><header class=\"entry-content-header\" aria-label=\"Gamme : Acier 30NiCrMo16-6 \/ 1,6747\"><h3 class='grid-entry-title entry-title' ><a href='https:\/\/waldunsteel.com\/fr\/products\/30nicrmo16-6-1-6747-steel\/' title='Acier 30NiCrMo16-6 \/ 1.6747'>Acier 30NiCrMo16-6 \/ 1.6747<\/a><\/h3><\/header><\/div><footer class=\"entry-footer\"><\/footer><\/article><\/div><div data-ajax-id='1766' class='grid-entry flex_column isotope-item all_sort no_margin post-entry post-entry-1766 grid-entry-overview grid-loop-14 grid-parity-even  alloysteel_sort  av_one_third  default_av_fullwidth'><article class='main_color inner-entry' ><a href=\"https:\/\/waldunsteel.com\/fr\/products\/51crv4-1-8159-spring-steel\/\" title='51CrV4 \/ 1.8159 Acier \u00e0 ressort'  data-rel='grid-1' class='grid-image avia-hover-fx'> <img decoding=\"async\" fetchpriority=\"high\" width=\"260\" height=\"185\" src=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/08\/51CrV4-1.8159-Spring-Steel-260x185.jpg\" class=\"wp-image-1767 avia-img-lazy-loading-not-1767 attachment-portfolio_small size-portfolio_small wp-post-image\" alt=\"51CrV4 1.8159 Acier \u00e0 ressort\" srcset=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/08\/51CrV4-1.8159-Spring-Steel-260x185.jpg 260w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/08\/51CrV4-1.8159-Spring-Steel-18x12.jpg 18w\" sizes=\"(max-width: 260px) 100vw, 260px\" \/><\/a><div class='grid-content'><div class='avia-arrow'><\/div><header class=\"entry-content-header\" aria-label=\"Gamme : Acier \u00e0 ressort 51CrV4 \/ 1,8159\"><h3 class='grid-entry-title entry-title' ><a href='https:\/\/waldunsteel.com\/fr\/products\/51crv4-1-8159-spring-steel\/' title='51CrV4 \/ 1.8159 Acier \u00e0 ressort'>51CrV4 \/ 1.8159 Acier \u00e0 ressort<\/a><\/h3><\/header><\/div><footer class=\"entry-footer\"><\/footer><\/article><\/div><div data-ajax-id='1745' class='grid-entry flex_column isotope-item all_sort no_margin post-entry post-entry-1745 grid-entry-overview grid-loop-15 grid-parity-odd  post-entry-last  alloysteel_sort  av_one_third  default_av_fullwidth'><article class='main_color inner-entry' ><a href=\"https:\/\/waldunsteel.com\/fr\/products\/aisi-8630-alloy-steel\/\" title='Acier alli\u00e9 AISI 8630'  data-rel='grid-1' class='grid-image avia-hover-fx'> <img decoding=\"async\" fetchpriority=\"high\" width=\"260\" height=\"185\" src=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/07\/AISI-8630-Alloy-Steel-260x185.jpg\" class=\"wp-image-1746 avia-img-lazy-loading-not-1746 attachment-portfolio_small size-portfolio_small wp-post-image\" alt=\"Acier alli\u00e9 AISI 8630\" srcset=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/07\/AISI-8630-Alloy-Steel-260x185.jpg 260w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/07\/AISI-8630-Alloy-Steel-16x12.jpg 16w\" sizes=\"(max-width: 260px) 100vw, 260px\" \/><\/a><div class='grid-content'><div class='avia-arrow'><\/div><header class=\"entry-content-header\" aria-label=\"Gamme de produits : Acier alli\u00e9 AISI 8630\"><h3 class='grid-entry-title entry-title' ><a href='https:\/\/waldunsteel.com\/fr\/products\/aisi-8630-alloy-steel\/' title='Acier alli\u00e9 AISI 8630'>Acier alli\u00e9 AISI 8630<\/a><\/h3><\/header><\/div><footer class=\"entry-footer\"><\/footer><\/article><\/div><\/div><\/div>   <!--   class=\"av-portfolio-grid-sorting-container\"  --><\/p><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-ecppt-7198ed60296024a07d4a2df4f76d0b56\">\n.flex_column.av-ecppt-7198ed60296024a07d4a2df4f76d0b56{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-ecppt-7198ed60296024a07d4a2df4f76d0b56 av_one_third  avia-builder-el-4  el_after_av_two_third  avia-builder-el-last  flex_column_div av-zero-column-padding'     ><p><section  class='av_textblock_section av-kmafxtyn-4fbd8ebaca1b593fc1f2592b5f5ca2db'  ><div class='avia_textblock' >\n<\/div><\/section><br \/>\n<div  class='avia-builder-widget-area clearfix  avia-builder-el-6  el_after_av_textblock  avia-builder-el-last'><section id=\"portfoliobox-2\" class=\"widget clearfix avia-widget-container newsbox\"><h3 class=\"widgettitle\">derniers produits<\/h3><ul class=\"news-wrap image_size_widget\"><li class=\"news-content post-format-standard\"><div class=\"news-link\"><a class='news-thumb' title=\"Lire : Acier 60CrMoV18-5\" href=\"https:\/\/waldunsteel.com\/fr\/products\/60crmov18-5-steel\/\"><img decoding=\"async\" fetchpriority=\"high\" width=\"36\" height=\"36\" src=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2024\/01\/1.2358-36x36.jpg\" class=\"wp-image-2212 avia-img-lazy-loading-not-2212 attachment-widget size-widget wp-post-image\" alt=\"1.2358\" srcset=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2024\/01\/1.2358-36x36.jpg 36w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2024\/01\/1.2358-300x300.jpg 300w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2024\/01\/1.2358-80x80.jpg 80w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2024\/01\/1.2358-12x12.jpg 12w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2024\/01\/1.2358-180x180.jpg 180w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2024\/01\/1.2358-705x705.jpg 705w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2024\/01\/1.2358.jpg 750w\" sizes=\"(max-width: 36px) 100vw, 36px\" \/><\/a><div class=\"news-headline\"><a class='news-title' title=\"Lire : Acier 60CrMoV18-5\" href=\"https:\/\/waldunsteel.com\/fr\/products\/60crmov18-5-steel\/\">Acier 60CrMoV18-5<\/a><span class=\"news-time\">11 janvier 2024 - 3h02<\/span><\/div><\/div><\/li><li class=\"news-content post-format-standard\"><div class=\"news-link\"><a class='news-thumb' title=\"Lire : 1.2358 Acier\" href=\"https:\/\/waldunsteel.com\/fr\/products\/1-2358-steel\/\"><img decoding=\"async\" fetchpriority=\"high\" width=\"36\" height=\"36\" src=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2024\/01\/1.2358-36x36.jpg\" class=\"wp-image-2212 avia-img-lazy-loading-not-2212 attachment-widget size-widget wp-post-image\" alt=\"1.2358\" srcset=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2024\/01\/1.2358-36x36.jpg 36w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2024\/01\/1.2358-300x300.jpg 300w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2024\/01\/1.2358-80x80.jpg 80w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2024\/01\/1.2358-12x12.jpg 12w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2024\/01\/1.2358-180x180.jpg 180w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2024\/01\/1.2358-705x705.jpg 705w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2024\/01\/1.2358.jpg 750w\" sizes=\"(max-width: 36px) 100vw, 36px\" \/><\/a><div class=\"news-headline\"><a class='news-title' title=\"Lire : 1.2358 Acier\" href=\"https:\/\/waldunsteel.com\/fr\/products\/1-2358-steel\/\">1.2358 Acier<\/a><span class=\"news-time\">11 janvier 2024 - 02h55<\/span><\/div><\/div><\/li><li class=\"news-content post-format-standard\"><div class=\"news-link\"><a class='news-thumb' title=\"Lire : Acier lamin\u00e9 \u00e0 froid 1045\" href=\"https:\/\/waldunsteel.com\/fr\/products\/1045-cold-rolled-steel\/\"><img decoding=\"async\" fetchpriority=\"high\" width=\"36\" height=\"36\" src=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/04\/SAE-1045-Carbon-Steel-Round-Bars-36x36.jpg\" class=\"wp-image-1365 avia-img-lazy-loading-not-1365 attachment-widget size-widget wp-post-image\" alt=\"barres rondes en acier au carbone sae 1045\" srcset=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/04\/SAE-1045-Carbon-Steel-Round-Bars-36x36.jpg 36w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/04\/SAE-1045-Carbon-Steel-Round-Bars-80x80.jpg 80w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/04\/SAE-1045-Carbon-Steel-Round-Bars-180x180.jpg 180w\" sizes=\"(max-width: 36px) 100vw, 36px\" \/><\/a><div class=\"news-headline\"><a class='news-title' title=\"Lire : Acier lamin\u00e9 \u00e0 froid 1045\" href=\"https:\/\/waldunsteel.com\/fr\/products\/1045-cold-rolled-steel\/\">1045 Acier lamin\u00e9 \u00e0 froid<\/a><span class=\"news-time\">1 novembre 2023 - 11h32<\/span><\/div><\/div><\/li><li class=\"news-content post-format-standard\"><div class=\"news-link\"><a class='news-thumb' title=\"Lire : Acier 46Cr2 \/ 1.7006\" href=\"https:\/\/waldunsteel.com\/fr\/products\/46cr2-1-7006-steel\/\"><img decoding=\"async\" fetchpriority=\"high\" width=\"36\" height=\"36\" src=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/08\/Steel-C60r-1-1223-Bar-or-Rod-for-Project-36x36.jpg\" class=\"wp-image-1810 avia-img-lazy-loading-not-1810 attachment-widget size-widget wp-post-image\" alt=\"Steel-C60r-1-1223-Bar-or-Rod-for-Project\" srcset=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/08\/Steel-C60r-1-1223-Bar-or-Rod-for-Project-36x36.jpg 36w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/08\/Steel-C60r-1-1223-Bar-or-Rod-for-Project-80x80.jpg 80w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/08\/Steel-C60r-1-1223-Bar-or-Rod-for-Project-180x180.jpg 180w\" sizes=\"(max-width: 36px) 100vw, 36px\" \/><\/a><div class=\"news-headline\"><a class='news-title' title=\"Lire : Acier 46Cr2 \/ 1.7006\" href=\"https:\/\/waldunsteel.com\/fr\/products\/46cr2-1-7006-steel\/\">46Cr2 \/ 1.7006 Acier<\/a><span class=\"news-time\">24 octobre 2023 - 9h30<\/span><\/div><\/div><\/li><\/ul><span class=\"seperator extralight-border\"><\/span><\/section><section id=\"text-3\" class=\"widget clearfix widget_text\"><h3 class=\"widgettitle\">CONTACTER WALDUN STEEL<\/h3>\t\t\t<div class=\"textwidget\"><p><strong>Mobile: <\/strong><\/p>\n<p>+8618652469606<\/p>\n<p><strong>E-mail: <\/strong><\/p>\n<p>iguhongtao@gmail.com<\/p>\n<\/div>\n\t\t<span class=\"seperator extralight-border\"><\/span><\/section><section id=\"media_image-2\" class=\"widget clearfix widget_media_image\"><img decoding=\"async\" width=\"300\" height=\"158\" src=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2022\/05\/Waldun-Steel-ISO-9001-Logo-300x158-1.png\" class=\"image wp-image-1937  attachment-full size-full\" alt=\"acier waldun logo iso 9001 300x158\" style=\"max-width: 100%; height: auto;\" srcset=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2022\/05\/Waldun-Steel-ISO-9001-Logo-300x158-1.png 300w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2022\/05\/Waldun-Steel-ISO-9001-Logo-300x158-1-18x9.png 18w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><span class=\"seperator extralight-border\"><\/span><\/section><\/div><\/p><\/div><\/p>","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":827,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"tags":[],"portfolio_entries":[30,29],"class_list":["post-825","portfolio","type-portfolio","status-publish","has-post-thumbnail","hentry","portfolio_entries-alloysteel","portfolio_entries-engineeringsteel"],"_links":{"self":[{"href":"https:\/\/waldunsteel.com\/fr\/wp-json\/wp\/v2\/portfolio\/825","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/waldunsteel.com\/fr\/wp-json\/wp\/v2\/portfolio"}],"about":[{"href":"https:\/\/waldunsteel.com\/fr\/wp-json\/wp\/v2\/types\/portfolio"}],"author":[{"embeddable":true,"href":"https:\/\/waldunsteel.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/waldunsteel.com\/fr\/wp-json\/wp\/v2\/comments?post=825"}],"version-history":[{"count":0,"href":"https:\/\/waldunsteel.com\/fr\/wp-json\/wp\/v2\/portfolio\/825\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/waldunsteel.com\/fr\/wp-json\/wp\/v2\/media\/827"}],"wp:attachment":[{"href":"https:\/\/waldunsteel.com\/fr\/wp-json\/wp\/v2\/media?parent=825"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/waldunsteel.com\/fr\/wp-json\/wp\/v2\/tags?post=825"},{"taxonomy":"portfolio_entries","embeddable":true,"href":"https:\/\/waldunsteel.com\/fr\/wp-json\/wp\/v2\/portfolio_entries?post=825"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}