Grade SA302 Grade A
Corresponding Standard ASME SA-302/SA-302M-2023
Pressure Vessel Plates, Alloy Steel, Manganese- Molybdenum and Manganese-Molybdenum-Nickel
Classification Alloy Steel
SA302 Grade A Chemical Element Composition Content (%)
  Component C Si Mn P S Mo
板厚t≤25 Minimum Value - 0.15 0.95 - - 0.45
Maximum Value 0.2 0.4 1.3 0.025 0.025 0.6
  Component C Si Mn P S Mo
板厚25<t≤50 Minimum Value - 0.15 0.95 - - 0.45
Maximum Value 0.23 0.4 1.3 0.025 0.025 0.6
  Component C Si Mn P S Mo
板厚t>50 Minimum Value - 0.15 0.95 - - 0.45
Maximum Value 0.25 0.4 1.3 0.025 0.025 0.6
SA302 Grade A Mechanical Properties
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
515~655 ≥310 Gauge distance L0=200mm: ≥15
Gauge distance L0=50mm: ≥19

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