Grade A732 Grade 3A
USA UNS J04002
Other Names
Corresponding Standard ASTM A732/A732M-2020
Standard Specification for Castings, Investment, Carbon and Low-Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures
Classification Carbon Steel
A732 Grade 3A Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu W
Minimum Value 0.35 0.2 0.7 - - - - - -
Maximum Value 0.45 1 1 0.04 0.045 - - - -
Nominal Value - - - - - 0.35 0.5 0.5 0.1
① Total content of these residual elements:≤1.00%.
A732 Grade 3A Mechanical Properties
Heat Treatment or Condition
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
A: Annealed ≥517 ≥331 25

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