Grade 30CrMoA
Corresponding Standard GJB 1951-1994
Specification for quality structure steel bars for avication
Classification Alloy Steel
30CrMoA Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu * Mo Ti * W * V *
Minimum Value 0.26 0.17 0.4 - - 0.8 - - 0.15 - - -
Maximum Value 0.33 0.37 0.7 0.03 0.03 1.1 0.3 0.25 0.25 0.03 0.2 0.05
30CrMoA Mechanical Properties
condition Heat Treatment or Condition
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Reduction of Area
ψ
%
Hardness
HBW
Impact Energy Absorption
KV2
J
Steel Rod Tempering or annealing ≤229
Longitudinal specimen d=16① Quenching 880±10°C oil cooling, Tempering 490~590°C water or oil cooling ≥930 ≥735 ≥12 ≥50 - ≥71
30CrMoA Corresponding Standards(Same grade name, different standards)

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