AISI S1 60WCrV8 1.2550 Cold Work Steel

AISI S1 60WCrV8 1.2550 Cold Work Steel 1.2550 cold work steel AISI S1 60WCrV8 1.2550 Cold Work Steel AISI S1 60WCrV8 1

AISI S1 60WCrV8 1.2550 Cold Work Steel

Introduction:

1.2550 Cold work steel with very good toughness, dimensionally stable, impact resistant, high hardening capacity. Similar with AISI S1.

Applications:

Typical applications include mandrel bars for drawing steel tubes, swaging, also punching, piercing, trimming dies and shear blades, forming and gripper dies.

Quality Standard:

BS-EN-ISO-4957-2000 Tool Steel

All Grades Comparison:

ASTM Material No. EN
S1 1.2550 60WCrV8

Chemical Composition(%)

Steel Grade C Si Mn P S Cr Mo V W
S1 0.55-0.65 0.70-1.00 0.15-0.45 0.030 max 0.030 max 0.90-1.20 / 0.10-0.20 1.70-2.00
1.2550 0.55-0.65 0.70-1.00 0.15-0.45 0.030 max 0.030 max 0.90-1.20 / 0.10-0.20 1.70-2.00

HEAT TREATMENT:

  • FORGING:Heat the steel carefully to a temperature of 1000-1050°C and forge with light rapid blows. Reheat when temperature falls below 900°C if further work remains to be done. After forging, cool slowly, ideally in a furnace.
  • ANNEALING: Heat the component slowly and uniformly to 800-810°C. Soak thoroughly for two to three hours and cool slowly in the furnace.
  • STRESS RELIEVING: If the machining operations have been severe, we recommend stabilising just before the tool components are finish machined to relieve machining strains. Heat slowly to a temparature of 700°C, allow to cool in air.
  • HARDENING:Preheat at 650°C followed by rapid increase of temperature to 900-950°C. Quench in oil. Tempering of this grade is always recommended after hardening.
  • TEMPERING: Heat slowly to the required tempering temperature, soak thoroughly for two hours per 25mm section and allow to cool in air. For hot work applications, a minimum tempering temperature of 550°C should be used.

Mill′s test certificate:

EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.

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