USA UNS S83072
Corresponding Standard ASTM A789/A789M-2024
Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service
Classification Duplex Stainless Steel
Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo N W
Minimum Value - - 0.5 - - 28.5 6 - 0.7 0.35 3
Maximum Value 0.03 0.3 1.5 0.03 0.03 30.5 8 0.5 1.7 0.45 4
Mechanical Properties
condition Heat Treatment or Condition
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Hardness
HBW
Tube Solution heat treatment 1000~1150°C, rapid cooling by water or other methods ≥830 ≥650 ≥25 HBW: ≤327
HRC: ≤35
HV: ≤322*

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