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Duplex Stainless Steel
Main grades
S31803/S32250, S32750, S32760, S31500, S31500, 32001, S32003, S32304
Products introduction
It has good corrosion resistance with high strength. Content of Cr is between 18%-28% and Ni is 3%-10% in the condition of low C. Some steels also contain the alloy elements such as Mo, Cu, Nb, Ti and N, etc
Specifications：

ASTM A789 Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service

ASTM A790 (ASME SA790) Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe

　　ASTM A790 (ASME SA790)

　　　ASTM A928 (ASME SA928) Standard Specification for Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric Fusion Welded with Addition of Filler Metal

　　ASTM A928 (ASME SA928)

　GB/T 21832-2008 Austenitic--Ferritic(duplex) grade stainless steel welded tubes and pipes

GB/T 21833-2008 Austenitic-Ferritic (duplex) grade stainlee steel seamless tubes and pipes

　　　GB/T 21833-2008

Features:

1.Superior resistance to general and local corrosion, especially to stress corrosion, pitting corrosion, crevice corrosion, corrosion fatigue and abrasion & corrosion.

2.Good weldability

　　3.Good mechanical properties

　4.Excellent intergranular corrosion resistance

5.High cost-effectiveness, long life time

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2507双相钢管点腐蚀实验对比

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Φ25mm x 2mm 2507双相钢管常温力学性能实验值