Jiangsu Steel Group Co., Limited

Stainless steel manufacturer OEM & ODM

Stainless Steel 431

Inquiries : 153 - 2015/10/28 10:30:27

Availability - Real time from 5300 NorthAmerican Suppliers


Related Tradenames and Metal Names

Chemistry Data

Welding, Machining/ General Data

Fabrication Videos NEW

Physical Data

Mechanical Data

Links to Related Data

Main Material Property List


Stainless Steel 431 is stocked by 14 North American distributors and produced by 17large mills. Distributors will offer small quantity buys while mills willgenerally only sell large quantities, with delivery times anywhere from 10 to50 weeks depending on size and form required

This material is stocked primarily in BarProducts by 11 distributors but is also available to a lesser extent inFasteners, Forging Products, Piping Components, Tubular Products, and Wire Products.


The following specifications cover Stainless Steel 431

AISI 431AMS 5628ASTM A276ASTM A473ASTM A493ASTM A511ASTM A579ASTM A580DIN 1.4057MIL S-18732MIL S-8967UNS S43100

3.Property Results

  • Carbon 0.2 max

  • Chromium 15 - 17

  • Iron Balance

  • Manganese 1 max

  • Nickel 1.25 - 2.5

  • Phosphorus 0.04 max

  • Silicon  1 max

  • Sulphur  0.03 max

Principal Design Features :431 is amartensitic stainless combining excellent impact strength at high hardnesslevels with the best corrosion resistance of any martensitic stainless steels.

Applications: 431 has been successfullyused in a variety of aircraft and general industrial applications. Theseinclude fasteners, bolts, valve components and chemical equipment.

Machinability:In the fully annealedcondition, 431 will gall and build up on the tools. Good surface finishes arenot easily obtained.

Welding: Mostelectric welding procedures have proven successful with 431 stainless. Fillermetal should be AWS E/ER410.To avoid cracking, pre-heat the workpiece to 400-600F (204-316 C). After air cooling, treat at 1200 F (649 C) to reattain maximumproperties.

Hot Working:  Heat to 2100-2200 F (1149-1204 C) for best results. Do not workmaterial below 1650 F (900 C).

Cold Working :This alloy is easily drawn, spun, headed, sheared and bent comparedwith other stainless steels.

Hardening:1800-1950 F (982-1066 C), oilquench or ail cool for maximum properties.

4.Physical Data    

  • Density (lb / cu. in.)      0.28

  • Specific Gravity     7.75

  • Specific Heat (Btu/lb/Deg F - [32-212 DegF])    0.11

  • Electrical Resistivity (microhm-cm (at 68Deg F))      432

  • Melting Point (Deg F)   2700

  • Modulus of Elasticity Tension       29

  • MSO currently has no data available forthis grade.

5.Videos : MSO currently has no videosavailable for this grade.