Grade A982 Grade B Class 1
USA UNS S41005
Corresponding Standard ASTM A982/A982M-2010(R2025)
Standard Specification for Steel Forgings, Stainless, for Compressor and Turbine Airfoils
Classification Martensitic Stainless Steel
A982 Grade B Class 1 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo N Ti W Nb Al Sn More
Minimum Value 0.1 - 0.25 - - 11.5 - - - - - - - - - V:Report only
Maximum Value 0.15 0.5 0.8 0.018 0.015 13 0.75 0.15 0.5 0.08 0.05 0.1 0.2 0.025 0.05
A982 Grade B Class 1 Mechanical Properties
Tensile Strength
σb
Mpa
Specified Plastic Yield Strength
Rp0.2
Mpa
Elongation or Extension Rate
δ
%
Reduction of Area
ψ
%
Hardness
HBW
Impact Energy Absorption
KV2
J
≥760 ≥620 ≥18 ≥50 ≤269 ≥40

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