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:
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| | | 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:
Company Introduction:
Packaging and Delivery:
FAQ:
Q: Are you trading company or manufacturer?
A: We are a professional steel pipes materials manufacturer.
Q: How long is your delivery time?
A: Generally it takes 7-14 days if the goods are in stock or 30-60 days if there is no stock, this mainly depends on quantity.
Q: Do you provide free sampleas?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
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