Grade A325 Type 3 A
Corresponding Standard ASTM A325-2014
Structural bolts, steel, heat treated 120/105 ksi minimum tensile strength
Classification Alloy Steel
A325 Type 3 A Chemical Element Composition Content (%)
  Component C Si Mn P S Cr Ni Cu
Heat Analysis Minimum Value 0.33 0.15 0.9 - - 0.45 0.25 0.25
Maximum Value 0.4 0.35 1.2 0.035 0.04 0.65 0.45 0.45
  Component C Si Mn P S Cr Ni Cu
Product Analysis Minimum Value 0.31 0.13 0.86 - - 0.42 0.22 0.22
Maximum Value 0.42 0.37 1.24 0.04 0.045 0.68 0.48 0.48
A325 Type 3 A Mechanical Properties
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Reduction of Area
ψ
%
Hardness
HBW
1/2 ~ 1 ≥825 ≥635 ≥14 ≥35 253~319
>1 ~ 1-1/2 ≥725 ≥560 ≥14 ≥35
1-1/8 ~ 1-1/2 ≥725 ≥560 ≥14 ≥35 223~286
A325Type3A Corresponding Standards(Same grade name, different standards)

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