Grade A490M Type 3
Corresponding Standard ASTM A490M-2008
High-Strength Steel Bolts, Classes 10.9 And 10.9.3, For Structural Steel Joints (Metric)
Classification Alloy Steel
A490M Type 3 Chemical Element Composition Content (%)
  Component C Mn P S Cr Ni Cu Mo
≤M20(Heat Analysis) Minimum Value 0.2 0.4 - - 0.45 0.2 0.2 0.15
Maximum Value 0.53 - 0.035 0.04 - - 0.6 -
  Component C Mn P S Cr Ni Cu Mo
>M20(Heat Analysis) Minimum Value 0.3 0.4 - - 0.45 0.2 0.2 0.15
Maximum Value 0.53 - 0.035 0.04 - - 0.6 -
  Component C Mn P S Cr Ni Cu Mo
≤M20(Product Minimum Value 0.19 0.37 - - 0.42 0.17 0.17 0.14
Maximum Value 0.55 - 0.04 0.045 - - 0.63 -
  Component C Mn P S Cr Ni Cu Mo
>M20(Product Analysis) Minimum Value 0.28 0.37 - - 0.42 0.17 0.17 0.14
Maximum Value 0.55 - 0.04 0.045 - - 0.63 -
A490M Type 3 Mechanical Properties
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Reduction of Area
ψ
%
Hardness
HBW
1040~1210 ≥940 ≥14 ≥40 311~352

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