431 Stainless Steel
(UNS S43100)

High Torsional & Tensile Strength

431 stainless steel offers performance characteristics which are ideal for manufacturing shafts.


Type 431 is a martensitic stainless steel alloy which offers various performance benefits.

Features:

The heat-treatable stainless steel provides a good combination of strength and toughness. The material also provides good machinability after heat treatment, although welding is more complicated and is susceptible to cracking unless pre-heated. Additional hardness and wear resistance may be enhanced by nitriding, which also improves fatigue resistance. 431 stainless offers the highest corrosion resistance of all martensitic stainless steels, although resistance reduces once nitrided.

Suitability in Motorsport:

431 stainless steel has traditionally found use in engineering applications throughout the oil & gas sector but also finds use in motorsport, particularly in producing valve stems and engine valve components.

Other Uses:

Other typical motorsport applications for 431 stainless steel (UNS S43100) include bolts & fasteners and bearings. The product should be considered for applications where combined strength and toughness together with good corrosion resistance is considered important.

Talk to the Experts:

We gain a clear understanding of our customers' design drivers. By pushing the boundaries of both chemical and mechanical properties, we supply materials that deliver enhanced overall performance. Give us a call on +44 (0)1767 604708 or alternatively, click here to contact us.

  • High torsional & tensile strength
  • Good machinability after heat treatment
  • Good corrosion resistance
  • Can be nitrided
  • Valve stems
  • Bolts & fasteners
  • Bearings
  • Pump shafts