DUPLEX 2205 STAINLESS STEEL PIPE BRIEF INTRODUCTION
duplex 2205 stainless steel pipe with excellent mechanical properties and corrosion resistance, and good weldability, in oil and gas industry, Marine engineering, chemical industry and other industries have a wide range of USES. Oil and gas industry at present USES duplex stainless steel material laying of oil and gas pipeline length has more than 850 km, the vast majority of the 2205 duplex stainless steel seamless steel tube (there is also a part of S31803 duplex 2205 stainless steel pipe s, 2507 duplex stainless steel pipe tube); Due to the corrosive strength of the natural gas medium, the high-pressure duplex 2205 stainless steel pipe line materials.
DUPLEX 2205 STAINLESS STEEL PIPE 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
DUPLEX 2205 STAINLESS STEEL PIPE PERFOMACE AND COMPARISON
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.
DUPLEX 2205 STAINLESS STEEL PIPE
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
DUPLEX 2205 STAINLESS STEEL PIPE PACKING & DELIVERY
PACKING:PLASTIC BY BUNDLES OR WOODEN CASE OR ACCORDING TO YOUR REQUEST
DELIVERY:IN 7-30 DAYS
DUPLEX 2205 STAINLESS STEEL PIPE TYPES
▲ 2205 duplex stainless steel round pipe and tube
▲ 2205 duplex stainless steel square pipe and tube
▲ 2205 duplex stainless steel rectangular pipe and tube
▲ 2205 duplex stainless steel seamless and welded pipe
▲ 2205 duplex stainless steel seamless and welded tube
