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INCOLOY® alloy 254Mo/UNS S31254

Short Description:

254 SMO stainless steel bar, also known as UNS S31254, was originally developed for use in seawater and other aggressive chloride-bearing environments. This grade is considered a very high end austenitic stainless steel; UNS S31254 is often referred to as a “6% Moly” grade due to the molybdenum content; the 6% Moly family has the ability to withstand high temperatures and maintain strength under volatile conditions.


Product Detail

Product Tags

Chemical Composition

Alloy element C Si Mn S P Ni Cr Mo Fe Cu N

254 SMO

Min           17.5 19.5 6.0   0.5 0.18
Max 0.02 0.8 1.0 0.01 0.03 18.5 20.5 6.5 balance 1.0 0.22

Mechanical Properties

Aolly Status

Tensile strength

Rm Mpa     min

Yield strength

R P 0. 2 Mpa min

Elongation

A 5  min%

Reduction of area min, %

annealed

650

300

35

50

Physical Properties

Density g/cm3

7.94

Standard

ASTM A182 (F44) 

ASTM A240

ASTM A249

ASTM A269

ASTM A312

ASTM A469

ASTM A813ASTM

A814UNS S31254


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