Stainless Steel, Precipitation Hardening2S143D S143 Bar

Aerospace-grade precipitation hardening stainless steel.

S143 is a British aerospace grade. It is a precipitation hardenable stainless steel that offers moderate corrosion resistance and high mechanical strength. It is widely used in the aerospace and defense industries.

Material to S144 and S145 shares a common chemical composition with S143. Therefore material to S143 can be precipitation hardened using a different sequence of temperatures to produce material meeting the mechanical property requirements of S144 or S145.

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Related Specifications

  • BS S144
  • BS S145
  • FV520B
  • DEFSTAN 95-14


Chemical Composition


Aerospace applications

  • Gas turbine blades
  • Undercarriage components
  • Fasteners


  • Excellent strength and hardness levels
  • Good general corrosion resistance
  • Excellent anti-galling properties

Additional Information

Corrosion Resistance

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