Grade SA737 Grade B
Corresponding Standard ASME SA-737/SA-737M-2023
Pressure Vessel Plates, High-Strength, Low-Alloy Steel
Classification Alloy Steel
SA737 Grade B Chemical Element Composition Content (%)
  Component C Si Mn P S Nb
熔炼分析 Minimum Value - 0.15 1.15 - - -
Maximum Value 0.2 0.5 1.5 0.025 0.025 0.05
  Component C Si Mn P S Nb
成品分析 Minimum Value - 0.1 1.07 - - -
Maximum Value 0.22 0.55 1.62 0.025 0.025 0.05
SA737 Grade B Mechanical Properties
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
485~620 ≥345 L0=200: ≥18
L0=50: ≥23

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