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Bohler-Uddeholm UDDEHOLM RAMAX® S Modified 420F  (discontinued **)
Categories: Metal; Ferrous Metal; Stainless Steel

Material Notes: Chromium alloyed stainless holder steel

A pre-hardened stainless holder steel with excellent machinability, high tensile strength and good corrosion resistance.

RAMAX® S is characterized by:

  • Excellent machinability
  • Good corrosion resistance
  • Uniform hardness in all directions
  • Good indentation resistance


  • Holders/bolsters for plastic molds. RAMAX S in combination with STAVAX ESR or ELMAX as insert material gives a completely corrosion resistant mold.
  • Plastic and rubber molds with low requirements on polishability.
  • Dies and callipers for plastic extrusion.
  • Constructional parts

Key Words: AISI 420F
Available Properties
  • Density, hardened and tempered to 340 HB
  • Density, hardened and tempered to 340 HB
  • Hardness, Brinell, Hardened and tempered (Delivery condition)
  • Hardness, Brinell, tempering temp 200-1200°F
  • Tensile Strength, Ultimate, (hardened to 340 HB)
  • Tensile Strength, Ultimate, (hardened to 340 HB)
  • Tensile Strength, Yield, 68°F (hardened to 340 HB)
  • Tensile Strength, Yield, hardened to 340 HB
  • Elongation at Break, (hardened to 340 HB)
  • Elongation at Break, hardened to 340 HB
  • Reduction of Area, hardened to 340 HB
  • Reduction of Area, hardened to 340 HB
  • Modulus of Elasticity, 68°F, (hardened and tempered to 340 HB)
  • Modulus of Elasticity, hardened and tempered to 340 HB
  • Impact Test, hardened and tempered to 340 HB
  • Impact Test, hardened and tempered to 340 HB
  • CTE, linear, hardened and tempered to 340 HB
  • Specific Heat Capacity, hardened and tempered to 340 HB
  • Thermal Conductivity, hardened and tempered to 340 HB
  • Carbon, C
  • Chromium, Cr
  • Iron, Fe, as balance
  • Manganese, Mn
  • Silicon, Si
  • Sulfur, S
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