S31803  Duplex Steel Seamless Pipe

Description

S31803  Duplex Steel Seamless Pipe

Pipe Profile 

S31803 is a duplex stainless steel with twice the strength of a standard austenitic stainless steel. When higher mechanical strength/lighter weight is required, the alloy can be successfully used as a substitute for 300 series austenitic stainless steel.

Specification: 

Standard: ASTM A312, A213, A269; A511, A789, A790, SB163, DIN 17456, DIN 17458, EN10216-5, EN10216-2

OD: 10—610MM   / 1/8”—24”

Thickness: 0.3mm – 70mm, SCH10S, SCH40, SCH40S, SCH80, SCH80S, SCH120, SCH160, etc

Length: 1—12M as buyer request

Surface: NO.1, 180G, 240G, 320G Satin / Hairline, 400G, 600G Mirror finish

Manufacturing process: Hot Rolled, Cold Drawn

Application: oil and gas industry;

offshore stone breaking oil platform

heat exchanger tube, water treatment and water supply system,

fire protection system,

High-pressure pipe,

mechanical and structural components requiring high strength and high corrosion resistance;

Certificate: ISO 9001:2008、PED、ASME、TS

Material	UNS	Euro	Chemical Component %
			C	Mn	P	S	Si	Cr	Ni	Mo	N
S22253	S31803	1.4462	≤0.03	≤2.00	≤0.03	≤0.020	≤1.00	21.00-23.00	4.5-6.5	2.5-3.5	0.08-0.20

 

Material	UNS	EN	T*S	Y*S	Elongation	Heat Treatment
			(Mpa) min	(Mpa) min	(%)	℃
S22253	S31803	1.4462	620	65	25	1020-1100