DUPLEX 2205 Stainless Steel Pipe

Duplex 2205 stainless steel pipe combination of ferrite and austenite is the most beneficial properties, has the very good resistance to chloride stress corrosion cracking, is made up of 21% chromium, 2.5% nitrogen and 4.5% molybdenum nickel alloy consisting of duplex stainless steel, it is the yield strength of austenitic stainless steel double, this feature enables designers when designing products lose weight, make this kind of alloy has the advantages of more than 316,317L. Due to the high levels of chrome and molybdenum, the ability to resist spot corrosion and uniform corrosion is excellent. The double phase microstructure ensures that the steel has high tensile strength and high mechanical strength.

CHEMICAL COMPOSITION:

C	Si	Mn	P	S	Ni	Cr	Mo	N
≦0.030	≦1.00	≦2.00	≦0.030	≦0.015	4.50~6.50	21.00~23.00	2.90~3.50	0.14~0.20

PERFOMACE:

 

du

		DUPLEX 2205	304	316L	REMARKS
resistance to corrosion	Corrosion resistance of chlorinated chloride	>1000	47	152	40%Cacl2 100℃ Cause corrosion cracking time(h)
PREN	35.4	18.4	25.9	PREN The greater the coefficient, the stronger the hole erosion
Intercrystalline corrosion	very good	good	ok
Uniform corrosion resistance g.(m2.h)-1	0.021	57	12.1	20%H2So4 60℃ 100h
Fatigue resistance ≥	very good	good	ok
Mechanical properties	Tensile strength Rm((Mpa)≥	620	485	485	1020-1100℃ Water quenching
yield strength Rp0.2(Mpa)≥	450	170	170	1020-1100℃ Water quenching
elongation A50(%)≥	25	40	40	1020-1100℃ Water quenching
Hardness (b/l) ≤	290/30.5	187/90	187/90	1020-1100℃ Water quenching
Physical properties	Coefficient of thermal conductivity w/(m. ℃)	19	18	15	20-100℃
Linear expansion coefficient(10-5/℃)	13.7	16	16	20-100℃
Welding performance		The line thermal tendency coefficient is small, need not preheat before welding, do not need heat treatment after welding, can be welded with 304 stainless steel	In principle, no welding and preheating should be done	Welding is prone to high temperature cracks
Integrated performance comparison	very good	good	good

   

  DUPLEX 2205 STAINLESS STEEL PIPE APPLICATIONS:

▲ Neutral chloride environment,

▲ oil refining industry,

▲ petrochemical and chemical industry,

▲ chemical industrial pipelines,

▲ oil and gas industry,

▲ pulp and paper industry

▲ urea fertilizer industry,

▲ phosphate fertilizer industry,

▲ the water environment,

▲ energy and environmental protection industry,

▲ light industry and food industry,

▲ food and pharmaceutical industry equipment,

▲ high strength structure

Product Pictures

FAQ:

Q: Are you trading company or manufacturer ?