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AISI 431 – Martensitic Stainless Steel

AISI 431 is a high chromium martensitic stainless steel that offers a high yield strength and good corrosion resistance within both organic and industrial environments.

Alias

AISI 431
431S29
UNS S43100
SAE 51431
1.4057

Chemistry

Base Element Fe (Iron)

Element Min Max
C (Carbon) 0.2%
Cr (Chromium) 16.6%
Mo (Molybdenum) 1.6%
Mechanical Properties Min Max
Ultimate Tensile Strength (UTS) 770 MPa
Yield Strength 490 MPa
Elongation 20%
Gauge Length A5D
Hardness (Brinell) 230 HB
Charpy V-Notch Impact = Room Temp 55 Joules

Applications

Used within the Aearospace Industry, typical applications of grade AISI 431 include but are not limited to; fasteners, bolts & nuts, pump and propeller shafts and Aircraft parts.

Disclaimer:
Information is given for illustrative purposes only. Tachart accepts no responsibility for the accuracy of the data contained within or the use of the data by any other party.
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