Increasing Applications of Duplex S31803 and S32205 Seamless Pipes in Chemical Processing Plants

With the increasing requirements for environmental friendliness and sustainable development, the demand for Duplex S31803 and S32205 seamless pipes in the chemical industry has further increased. These materials not only meet the technical requirements of chemical plants, but also have lower energy consumption and longer service life, helping to reduce costs and reduce environmental impact.

Duplex Steel S31803/S32205 Pipes & Tubes Equivalent Grades

STANDARD	WERKSTOFF NR.	UNS
Duplex S31803 / S32205	1.4462	S31803 / S32205

Duplex S31803 / S32205 Pipes, Tubing Chemical Composition

Grade	C	Mn	Si	P	S	Cr	Mo	Ni	N	Fe
S31803	0.030 max	2.00 max	1.00 max	0.030 max	0.020 max	22.0 – 23.0	3.0 – 3.5	4.50 – 6.50	0.14 – 0.20	63.72 min
S32205	0.030 max	2.00 max	1.00 max	0.030 max	0.020 max	22.0 – 23.0	2.50 – 3.50	4.50 – 6.50	0.08 – 0.20	63.54 min

Duplex stainless steel S31803 and S32205 have excellent corrosion resistance and can resist the erosion of corrosive media such as chemicals, acids, alkalis, and salt water.

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