ASTM A789 ASME SA 789 S32205 Duplex Stainless Steel is a nitrogen enhanced duplex stainless steel that was developed to combat common corrosion problems encountered with the 300 series stainless steel. “Duplex” describes a family of stainless steel that are neither fully austenitic, like 304 stainless, nor purely ferritic, like 430 stainless steel. The structure of S32205 duplex stainless steel consists of austenitic pools surrounded by a continuous ferritic phase. In the annealing condition, S32205 contains approximately 40-50% ferrite. Often referred to as the workhorse grade, 2205 is the most widely used grade in the duplex stainless steel tube.

2205 Duplex Pipe (3.0% to 4.0% Mo) has high strength and excellent resistance to chloride stress corrosion cracking. Multipurpose stainless steel, originally used as a fluid flow tube in the oil and gas industry, is now more used in the chemical processing and petrochemical industries and as a digester in the pulp and paper industry.

2205 Stainless Steel strip Characteristic machining technology

• High resistance to chloride stress corrosion cracking

• Resistance to chloride pitting and crevice corrosion

• Good general corrosion resistance

• Good sulfide stress corrosion resistance

• High Strength

• Good weldability and workability

Construction/Indutry/Building/Chemical/Auto

Pressure vessels, tanks, piping, and heat exchangers in the chemical processing industry

Piping, tubing, and heat exchangers for the handling of gas and oil

Effluent scrubbing systems

Pulp and paper industry digesters, bleaching equipment, and stock-handling systems

Rotors, fans, shafts, and press rolls requiring combined strength and corrosion resistance

Cargo tanks for ships and trucks

Food processing equipment

Biofuels plants

Summary

Foshan Sewaly Steel Co., Ltd. is a large-scale comprehensive processing group mainly engaged in stainless steel coil, stainless steel strip, stainless steel plate and stainless steel strip. We have been engaged in the stainless steel industry for 13+ years, with a monthly shipment of 5,000+ tons, a standing inventory of 15,000+ tons, and a professional team of 500+ people. The company can provide corresponding certifications according to customer requirements, such as: EN, ASTM/ASME, DIN/JUV, JIS/SUS, etc.

So far, we have the branches located in Shanghai, Jiangsu, Chengdu, Shandong, and formed a Russian team. Meanwhile, we won the first-level agent of Shanxi Taigang STSS, Fujian Hongxin Machinery Co.,Ltd., Posco Stainless Steel Co., Ltd.. The company has expanded its export business and established good cooperative relations with major foreign steel mills. Our partners include: Outokumpu Oyj, Avista Corporation, Nippon Yakin Europe Limited, ATI, JFE Steel Corporation and other companies .