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S1 Tool Steel (100MnCrW4)
Cold work steel with very good toughness, dimensionally stable, impact resistant, high hardening capacity.

Applications: Cold shear knives, paper and wood cutting knives, cutting tools for plates up to 10 mm, ejector pins, air hammers.

Colour Code
Stocked Sizes  
Condition of Delivery Soft annealed to max. 229 HB
Related Specifications
  Germany  DIN 1.2550
Chemical Composition %
  Carbon 0.60
Tungsten 2.00
Chromium 1.00
Vanadium 0.15
Physical Properties
Thermal expansion coefficient
Thermal conductivity
Heat Treatment
Soft Annealing
Temperature Cooling Hardness
740 - 760oC furnace max 229 HB
Stress Relief Annealing
Temperature Cooling
600 - 650oC furnace
Temperature Cooling Tempering
860 - 900oC oil or hot bath
180 - 220oC
see tempering diagram
Thermal Cycle Diagram

Continuous Cooling Transformation Diagram (CCT)

Tempering Diagram

Interlloy believes the information provided is accurate and reliable. However no warranty of accuracy, completeness or reliability is given, nor will any responsibility be taken for errors or omissions.
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