Stainless steel

Rex 734
1.4472

This High-Nitrogen stainless steel offers better tensile strength, wear resistance, resistance to pitting and crevice corrosion than the 316LVM grade. Obtained through slag remelting, this grade contains no ferrite and the inclusion cleanliness of its microstructure makes it non-magnetic and biocompatible with human tissue.   This alloy is used in the manufacture of heavy-use orthopaedic implants and osteosynthesis devices, such as very thin screws or high-mobility prosthesis.

Key benefits

  • Yield strength (up to) twice higher than 316LVM in annealed condition

  • High corrosion resistance

  • Good forgeability

Standards

  • ASTM 1586

  • ISO 5832-9

Forms available in stock

Diameter
  • 8 to 60 mm
Length
  • 3000 mm around

Chemical composition

Reference standard : ASTM F1586
C
  • 0% min
  • 0,08% max
Si
  • 0% min
  • 0,75% max
Mn
  • 2% min
  • 4,25% max
P
  • 0% min
  • 0,025% max
S
  • 0% min
  • 0,01% max
N
  • 0,25% min
  • 0,5% max
Cr
  • 19,5% min
  • 22% max
Mo
  • 2% min
  • 3% max
Ni
  • 9% min
  • 11% max
Cu
  • 0% min
  • 0,25% max
Fe
  • Balance
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Mechanical properties

Rm (Mpa)
740 (annealed)
Rp 0,2 (Mpa)
430 (annealed)
Density (g/cm3)
7,91
A (%)
35