Grade 300WT
Corresponding Standard CSA G40.21-2004
Structural Quality Steel
Classification Carbon Steel
300WT Chemical Element Composition Content (%)
  Component C Si Mn P S
Minimum Value - 0.15 0.8 - -
Maximum Value 0.22 0.4 1.5 0.03 0.04
300WT Mechanical Properties
thickness
t
mm
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
t≤65① 450~620 ≥300 L0=200mm:
long.: ≥20
tr.: ≥18
L0=50mm:
long.: ≥23
tr.: ≥21
65<t≤150① 450~620 ≥280 L0=200mm:
long.: ≥20
tr.: ≥18
L0=50mm:
long.: ≥23
tr.: ≥21
Rolled shapes and sheet piling;common shape size group 3 450~620 ≥300 L0=200mm: ≥20②
L0=50mm: ≥23
300WT Corresponding Standards(Same grade name, different standards)

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