Grade 25A
Corresponding Standard GJB 1951-1994
Specification for quality structure steel bars for avication
Classification Carbon Steel
25A Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu * Mo * Ti * W * V *
Minimum Value 0.22 0.17 0.5 - - - - - - - - -
Maximum Value 0.3 0.37 0.8 0.03 0.03 0.3 0.3 0.25 0.15 0.03 0.2 0.05
25A 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
Steel Rod Normalizing or Annealing 121~170
Steel bars① Supply State ≥420 ≥235 ≥19 ≥50 121~170

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