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Bohler-Uddeholm UDDEHOLM STAVAX® SUPREME Modified 420  (discontinued **)
Categories: Metal; Ferrous Metal; Stainless Steel

Material Notes: Cr-Ni-Mo-V alloyed

Stavax® Supreme is an ESR re-melted tool steel, this provides a very pure material, with a minimum of inclusions. Purity is a requirement to be able to achieve the desired surface finish; it also contributes to better toughness. This grade is the right choice for larger tools where corrosion in production is unacceptable and where the requirements for good surface finish are high.

Stavax® Supreme is characterized by:

  • Good corrosion resistance
  • Excellent through-hardening properties
  • Good ductility and toughness
  • Good wear resistance
  • Excellent polishability

Key Words: AISI 420 modified
Available Properties
  • Density, hardened to 50 HRC
  • Hardness, Brinell, Annealed (Delivery condition)
  • Hardness, Rockwell C, temper temp 390-1020°F (2 x 2h)
  • Tensile Strength, Ultimate, hardened to 45 HRC
  • Tensile Strength, Ultimate, hardened to 50 HRC
  • Tensile Strength, Yield, hardened to 45 HRC
  • Tensile Strength, Yield, hardened to 50 HRC
  • Modulus of Elasticity, (hardened to 50 HRC)
  • Modulus of Elasticity, hardened to 50 HRC
  • Modulus of Elasticity, hardened to 50 HRC
  • Impact Test, temper temp 390-1020°F (2 x 2h)
  • CTE, linear, hardened to 50 HRC
  • CTE, linear, hardened to 50 HRC
  • Specific Heat Capacity, hardened to 50 HRC
  • Thermal Conductivity, hardened to 50 HRC
  • Thermal Conductivity, hardened to 50 HRC
Property Data

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