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1.3343 High-speed steel (HSS)

DESIGNATION

DIN:	HS 6-5-2 C
AFNOR:	Z 85 WDCV 6
UNI:	X 82 WMoV 6 5
AISI:	M 2 reg. C

CHEMICAL COMPOSITION:

C	0.9
Si	0.3
Mn	0.3
Cr	4.0
Mo	5.0
V	1.9
W	6.2

STRENGTH:

max. 269 HB
(≈ max. 915 N/mm²)

THERMAL CONDUCTIVITY AT 100 °C:

27.4 W/m K

CHARACTER:

high-speed steel featuring high resistance to abrasion and wear in combination with high toughness and compressive strength. High heat resistance, therefore ideal for through hardening

APPLICATION:

blocks for eroding, cold forming tools such as cutting, fine blanking and impact extrusion punches and dies
inserts with a very high wear resistance

TREATMENT BY

is possible:
Polishing

highly suitable:
Nitriding, EDM, coating

HEAT TREATMENT:

Soft annealing:
820 to 850 °C for about 2 to 5 hours
slow controlled cooling of 10 to 20 °C per hour to about 550 °C;
further cooling in air. Maximum 270 HB

Hardening:
1190 - 1230 °C
Quenching in oil/compressed gas/air/hot bath
obtainable hardness: 66 HRC

Tempering:
slow heating to tempering temperature (to avoid forming of cracks)
immediately after hardening;
triple tempering is recommended

Annealing graph: