C22R / 1.1149 Special Steel

Under EN10083-2:2002 standard,C22R / 1.1149 Special Steel is to point to to meet a certain strength and formability levels of steel. Formability tensile test to break elongation said. Structural steel are used for carrying such use, in these USES the strength of steel is an important design standards.

C22R / 1.1149 Special Steel can be divided into: alloy steel carbon structural steel low alloy steel heat resistant steel, etc.

C22R EN 10083-2:2002, Number: 1.1149	Comparison of steel grades
	JUS	13311
	DIN	(CK22)
	BS	–
	GOST	20
	AISI	–
	UNI	–
	NF	(XC18u)

C22R / 1.1149 Special Steel Chemical Composition per EN 10083-2 (Special Steel)

GRADE	NUMBER	C	Si	Mn	P	S	Cr	Mo	Ni	Cr+Mo+Ni
C22R	1.1149	0.17-0.24	≤ 0.40	0.40-0.70	≤ 0.030	0.02-0.04	≤ 0.40	≤ 0.10	≤ 0.40	≤ 0.63

C22R / 1.1149 Special Steel Mechanical properties in the quenched and tempered condition (+QT)

	Mechanical properties for the ruling sections (see prEN10083-1:2002, Annex A) with a diameter (d) or for flat products trickness (t) of
	d  ≤ 16mm t ≤ 8mm	16mm < d  ≤ 40mm 8mm < t  ≤  20mm	40mm < d  ≤ 100mm 20mm < t  ≤  60mm
Re min (MPa)	340	290	–
Rm (MPa)	500-650	470-620	–
A  min. (%)	20	22	–
Z  min. (%)	50	50	–
KV min. (J)	50	50	–

C22R / 1.1149 Special Steel Mechanical properties in the normalized condition – (+N)

	Mechanical properties for  products with a diameter (d) or, for flat products trickness (t) of
	d  ≤ 16mm t ≤ 16mm	16mm < d  ≤ 100mm 16mm < t  ≤  100mm	100mm < d  ≤ 250mm 100mm < t  ≤  250mm
Re min. (MPa)	240	210	–
Rm min. (MPa)	430	410	–
A  min. (%)	24	25	–

C22R / 1.1149 Special Steel Heat treatment conditions

Quenching 0C	Quenching agent	Tempering temperature0C	Normalizing 0C
860-900	Water or oil Oil or water	550-660	880 to 940

Semi-hard, tough carbon-steel, easily machinable by cold-strain.

C22R / 1.1149 Special Steel Weldability:

Easily weldable.

C22R / 1.1149 Special Steel Hardenability:

Extremely low hardenability, used above all for pieces of small section and when deformations due to water-quenching are allowed.

Notes:

CORRESPONDENCE WITH OTHER STANDARDS (purely as an indication):

DIN 17200	AFNOR 35-551
Cm22	XC18u