Product Description
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
Experimental comparison of point corrosion of duplex steel tubes
Φ25mm x 2mm 2507 Experimental value of mechanical properties of two-phase steel tube at room temperature
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