01246 291 111

sales@westspecialfasteners.co.uk

01246 291 111

sales@westspecialfasteners.co.uk

431 Stainless Steel

About 431 Stainless Steel

431 is a Martensitic stainless steel known for its high strength and hardness, as well as moderate corrosion resistance.

431 is used in applications where high strength and moderate corrosion resistance are required, such as in valves, pumps, shafts, and various components in the chemical and food processing industries it is also often used in applications where resistance to wear and fatigue is important.

431 Stainless Steel Grades & Equivalents

  • BS970 431S29
  • EN57
  • ISO3506-1 C3-80
  • 1.4057

Typical chemical analysis

C
0.12 - 0.20
P
0.040
Ni
2.0 - 3.0
Si
1.00
S
0.030
Mn
1.00
Cr
15.0 - 18.0

Typical mechanical properties

Tensile Strength

850-1000 N/mm2

0.2% Proof Stress

635 N/mm2 min

Elongation

11% min

Impacts

34 Joules min

Hardness

248-302 HBw

Reduction of Area

Nil

Stress Rupture

Nil

Other Remarks

Nil

Download metal data sheets

431 Stainless Steel Material Data Sheet

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Location

Callywhite Ln, Dronfield, S18 2XR
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