USA UNS S20400
Corresponding Standard ASTM A409/A409M-2019
Welded Large Diameter Austenitic Steel Pipe for Corrosive or High-Temperature Service
Classification Austenitic Stainless Steel
Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni N
Minimum Value - - 7 - - 15 1.5 0.15
Maximum Value 0.03 1 9 0.045 0.03 17 3 0.3
Mechanical Properties
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
≥655 ≥330

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