The Grad and Chemical Composition of Carbon Construction Steel
Grade: Q235
Quality Grade: B
Chemical composition Quality Score %|C: 0.12～0.20 Chemical composition Quality Score %|Mn: 0.30～0.70① Chemical composition Quality Score %|Si②≤: 0.30 Chemical composition Quality Score %|S≤: 0.045 Chemical composition Quality Score %|P≤: 0.045 method of deoxidation: F、b、Z
The Mechanical Property of Carbon Construction Steel
Grade: Q235 Quality Grade: B
Tensile testing |Yield Point σ s/MPa≥| Steel Thickness or Diameter/mm|≤16: 235
Tensile testing |Yield Point σ s/MPa≥| Steel Thickness or Diameter/mm |＞16～40: 225
Tensile testing |Yield Point σ s/MPa，≥| Steel Thickness or Diameter/mm |＞40～60: 215
Tensile testing |Yield Point σ s/MPa，≥| Steel Thickness or Diameter/mm |＞60～100: 205
Tensile testing |Yield Point σ s/MPa，≥| Steel Thickness or Diameter/mm |＞100～150: 195
Tensile testing |Yield Point σ s/MPa，≥| Steel Thickness or Diameter/mm |＞150: 185 Tensile testing | Tensile Strengthσb/MPa: 375～500
Tensile testing | Elongationδ5(%)，≥| Steel Thickness or Diameter/mm |≤16: 26 Tensile testing | Elongationδ5(%)，≥| Steel Thickness or Diameter/mm |＞16～40: 25 Tensile testing |Elongationδ5(%)，≥| Steel Thickness or Diameter/mm |＞40～60: 24 Tensile testing |Elongationδ5(%)，≥| Steel Thickness or Diameter/mm |＞60～100: 23
Tensile testing |Elongationδ5(%)，≥| Steel Thickness or Diameter/mm m|＞100～150: 22
Tensile testing |Elongationδ5(%)，≥| Steel Thickness or Diameter/mm |＞150: 21 AKV |temperature/℃: 20
AKV |V-shaped(longitudinal) AKV AK/J，≥: 27 Bend Testing，B=2a，180°| Steel Thickness or Diameter/mm |≤60|flexural core diameter d/mm: longitudinal : a，horizontal: 1.5a
Bend Testing，B=2a，180°| Steel Thickness or Diameter/mm m|＞60～100| flexural core diameter d/mm: longitudinal : 2a，horizontal:2.5a
Bend Testing，B=2a，180°| Steel Thickness or Diameter/mm |＞100～200| flexural core diameter d/mm : longitudinal : 2.5a，horizontal: 3a
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