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Data Sheet:

 Stainless Steel Grade 431 

Chemical Composition Limits

Weight % C P Si Ni Mn S Cr Fe

431

0.20 max 0.040 max 1.00 1.25 - 2.5 1.0 0.030 15- 17 Bal

  

Alloy 431 is the most corrosion resistant of the martensitic grades.  Due to Alloy 431's excellent tensile and torque strength and good toughness it is used in structural parts that are exposed to marine atmosphere, also for aircraft fasteners and fittings. 

  

Availability

Grade 431 is available in  Bar (Round), Strip, Wire, Rod, Billet. For all stock availability contact Sales

 

Specifications

Grade 431stainless steel, Bar, Wire, Forgings, Tube.

UNS S43100

AMS 5628 431 Bar, Wire, Forgings, Tube. Corrosion resistant.

AMS S 18732  431 Bar, Wire, Forgings, Tube, Special Quality.

ASTM A 276

ASTM A 484

ASTM A 478

ASTM A580

ASTM A314

DMS-1565 Exc Sonic

MIL S 18732 Bar, Wire, Forgings, Tube

QQS 763 EXC Hardness & IZOD

  

TYPICAL MECHANICAL PROPERTIES (Room Temperature)

Grade 431

Grade  Tensile Strength (MPa) Proof Stress 0.2% (MPa) Elongation in 2" (%) Reduction of Area Brinell Hardness

431 Bar Ann

862 655 20 55 260

 

Disclaimer

Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.

  

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