Grade A542 Type A Class 3
Corresponding Standard ASTM A 542/A542M-2019
Standard Specification for Pressure Vessel Plates, Alloy Steel, Quenched and Tempered, Chromium-Molybdenum, and ChromiumMolybdenum-Vanadium
Classification Alloy Steel
A542 Type A Class 3 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo V
Minimum Value - - 0.3 - - 2 - - 0.9 -
Maximum Value 0.15 0.5 0.6 0.025 0.025 2.5 0.4 0.4 1.1 0.03
A542 Type A Class 3 Mechanical Properties
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
655~795 ≥515 ≥20

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