ASP 2012 HIGH-SPEED STEEL

Guidelines for Hardening

  • Soft-annealing 850C 900C, slow cooling 10C/h to 700C, hardness max
    230 HB.
  • Stress-relieving annealing 600C  700C, approx. 2 hours at temperature, slow cooling to 500C.
  • Hardening according to table. 
    Tempering, 3x1h at 560C .
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