1.3243 / HS6-5-2-5 – High Speed Steel (HSS)

1.3243/HS6-5-2-5 high speed tool steel manufacturers and suppliers,supplied in round rods,square bars,flat bars,plates,sheets and blocks.

1.3243  is a high speed tool steel  adding 5% cobalt which is similar to HS6-5-2-5 steel . the properties of 1.3243/HS6-5-2-5 tool steel will be obviously improved after special heat treating process and the hardness can reach 66 HRC. 1.3243/HS6-5-2-5 tool steel also offers excellent cutting performance which is used for broaches,saw blades,reamers, milling cutters and end mills.

Chemical Composition: 1.3243 per DIN 17350 (High Speed Steel); HS6-5-2-5 per EN ISO 4957

GRADE	NUMBER	C	Si	Mn	P	S	Cr	Mo	V	W	Co
HS6-5-2-5		0.87-0.95	≤ 0.45	≤ 0.40	≤ 0.030	≤ 0.030	3.80-4.50	4.70-5.20	1.70-2.10	5.90-6.70	4.50-5.00
	1.3243	0.88-0.96	≤ 0.45	≤ 0.40	≤ 0.030	≤ 0.030	3.80-4.50	4.70-5.20	1.70-2.00	6.00-6.70	4.50-5.00

Related 1.3243 / HS6-5-2-5 – High Speed Steel (HSS)

Specification

AISI/ASTM:M35

JIS/KS:SKH55

1.3243 / HS6-5-2-5 – High Speed Steel (HSS) Heat Treatment

1.3243 / HS6-5-2-5 – High Speed Steel (HSS) Annealing

• 3243/HS6-5-2-5 is supplied in the annealed and machineable condition.
• Reannealing will be necessary if the 1.3243/HS6-5-2-5 has been hot worked, forged, or hardened.
• Heat the temperature to 850°C at a rate of no more than 220°C per hour.
• Hold at the temperature for one hour per inch of thickness(at least two hours).
• Cool slowly in the furnace or in air to ambient temperature.
• The resultant hardness achieved should be Max 269HB or lower.

1.3243 / HS6-5-2-5 – High Speed Steel (HSS) Hardening

1.Preheat 1.3243/HS6-5-2-5 to 450-500°C ,then up to 820-880°C.

2.Heat to the final hardening temperature of 1050-1250°C and make sure the material must be heated through.

3.Quench in the warm oil or brine,and then complete the quench in air.(care must be taken at this step)

1.3243 / HS6-5-2-5 – High Speed Steel (HSS) Tempering

1.Tempering must be done immediately after quenching.

2.Heat thoroughly and uniformly to the tempering temperature of 510-620°C.

3.Hold at the temperature for at least two hours (one hour per inch of the total thickness).

4.Triple tempering is strongly recommended for1.3243/HS6-5-2-5 high speed steel.

1.3243 / HS6-5-2-5 – High Speed Steel (HSS) Delivery Condition

Shape:Round / Square / Flat Bars, Sheet, Plate,Wire.

Surface Condition:Black/Turning/grinding

1.3243 / HS6-5-2-5 – High Speed Steel (HSS) Round bar

Diameter 1-16mm 10-50mm 50-180mm 180-300mm

Process Cold Drawn Hot Rolled Hot Forged Free Forging

1.3243 / HS6-5-2-5 – High Speed Steel (HSS) Flat bar

Thickness 1-2.5mm 1.5-20mm 20-300mm

Width Max 800mm Max 800mm Max 800mm

Process Cold Drawn Hot Rolled Hot Forged

1.3243 / HS6-5-2-5 – High Speed Steel (HSS) Quality Assured Supply

1.3243/HS6-5-2-5 high speed steel is supplied in accordance with our ISO 9001 : 2008 registration.