Grade 4
Corresponding Standard AS 1442-2007
Carbon steels and carbon-manganese steels--Hot rolled bars and semi-finish products
Classification Carbon Steel
4 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo
Minimum Value 0.25 0.1 0.4 - - - - - -
Maximum Value 0.38 0.4 1 0.04 0.04 0.3 0.35 0.35 0.1
4 Mechanical Properties
condition Heat Treatment or Condition
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Bar; d ≤ 215 Rolling or Normalizing ≥500 ≥250 ≥20
Bright products, billets, thick plates; d ≤ 215 ≥500 ≥250 ≥20

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