Grade SA553 type III
Corresponding Standard ASME SA-553/SA-553M-2023
Pressure Vessel Plates, Alloy Steel, Quenched and Tempered 7, 8, and 9 % Nickel
Classification Alloy Steel
SA553 type III Chemical Element Composition Content (%)
  Component C Si Mn P S Ni
熔炼分析 Minimum Value - 0.05 - - - 6.5
Maximum Value 0.13 0.3 0.9 0.01 0.01 7.5
  Component C Si Mn P S Ni
成品分析 Minimum Value - 0.05 - - - 6.5
Maximum Value 0.13 0.3 0.98 0.01 0.01 7.5
SA553 type III Mechanical Properties
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
690~825 ≥585 Gauge length L0=50
≥20

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