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Home Material ASTM A789/A789M-2024
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USA UNS S32003
Corresponding Standard ASTM A789/A789M-2024
Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service
Classification Duplex Stainless Steel
Properties Corrosion Resistance
Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Mo N
Minimum Value - - - - - 19 3 1.5 0.14
Maximum Value 0.03 1 2 0.03 0.02 22.5 4 2 0.2
Mechanical Properties
condition Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
% 		Hardness
HBW
Pipes; t ≤ 5 Solution treatment 1010~1120°C, fast cooling in water or other methods ≥690 ≥485 ≥25 HBW: ≤290
HRC: ≤30
HV: ≤290*
Pipes; t > 5 Solution treatment 1010~1120°C, fast cooling in water or other methods ≥655 ≥450 ≥25 HBW: ≤290
HRC: ≤30
HV: ≤290*

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