DESIGNATION:
EN: HS 10-2-5-8
INDICATORY ANALYSIS:
C | 1.6 |
Cr | 4.8 |
Mo | 2.0 |
V | 5.0 |
W | 10.5 |
Co | 8.0 |
Strength:
max. 285 HB
(≈ max. 970 N/mm²)
THERMAL CONDUCTIVITY AT 100°C:
26 W/m K
CHARACTER:
High-speed steel produced by powder metallurgy with highest compressivestrength, high adhesive wear resistance and excellent toughness, very high workinghardness possible
APPLICATION:
Blocks for eroding, dies, cutting punches and cutting tools for extremely highrequirements, fine blanking punches, embossing tools, cold solid forming
TREATMENT BY:
Polishing:
best metallurgical properties for mirror finish
Nitriding:
highly suited for nitriding
EDM:
highly suited
Coating:
highly suited
HEAT TREATMENT:
Soft annealing:
870 to 900°C for about 2 to 5 hours
slow controlled cooling inside the furnace 10 to 12°C per hour to about 550°C,
further cooling in air, max. 300 HB
Hardening:
curing temperature: see tempering chart
quenching in oil/compressed gas/air/hot bath
obtainable hardness: 68 HRC
Tempering:
slow heating to tempering temperature (in order to avoid formation of cracks)
immediately after hardening;
keep at tempering temperature for at least 1 hour
four tempering cycles are recommended, with cooling to room temperature in
between
TEMPERING CHART:
TECHNICAL TIP:
- Retains hardness at high temperatures due to highcobalt content
- Excellent for PVD and CVD coating without risk ofdimensional changes, as the steel is tempered atmore than 520°C
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