ASP 2012 HIGH-SPEED STEEL

Guidelines for Hardening
  • Soft-annealing 850°C – 900°C, slow cooling 10°C/h to 700°C, hardness max
    230 HB.
  • Stress-relieving annealing 600°C  – 700°C, approx. 2 hours at temperature, slow cooling to 500°C.
  • Hardening according to table. 
    Tempering, 3x1h at 560°C .
Hardening
Temp. °C		 Hardness
HRC *		 Yield stress
in compression
MPa		 Typical
applications
950 49-50 1130 Powder compacting tools and tools requiring very high impact strength, hot working tools.
1000 51-52 1410
1050 54-55 1830
1100 57-58 2250
1125 59 2450

* Tempering time 3x1 hour at 560 °C