UNS S32205 Duplex Stainless Steel Seamless Pipe
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Duplex 2205 Seamless Pipes are made up of alloys that have both austenitic and ferritic properties. These properties allow these pipes to withstand corrosion, and these pipes also have excellent tensile strength. The 2205 Seamless Welded Pipes consist of about 22 percent chromium, 3 percent molybdenum, and 5 to 6 percent nickel.Duplex 2205 Pipe is a nitrogen enhanced duplex stainless steel that was developed to combat common corrosion problems encountered with the 300 series stainless steels. "Duplex" describes a family of stainless steels that are neither fully austenitic, like 304 stainless, nor purely ferritic, like 430 stainless. The structure of UNS S31803 duplex steel Pipe consists of austenite pools surrounded by a continuous ferrite phase. In the annealed condition, 2205 contains approximately 40-50% ferrite.
2205 duplex stainless steel pipe Specification
| Specification | Details |
| ASTM Specification | ASTM A790, ASME SA790 |
| Manufacturing Type | Seamless / ERW / Welded / Fabricated / CDW / CDS / DOM / CEW / 100% X Ray Welded |
| Thickness Range | SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXH, SCH XXS, SCH XS |
| Standard | SUS, JIS, AISI, ASTM, GB, DIN, EN |
| Additional Services | Destructive and Non Destructive testing, Threading, Ultrasonic Testing, Beveling, Cutting, Draw & Expansion as per required Size & Length |
| Pipe End Type | Plain End, Beveled End, Treaded 2205 Stainless Steel Pipe |
| Marking Details | Manufacturer's Name or Custom Logo - on request, Heat Number, Method of Manufacturing (Seamless / Welded), Material Grade, Schedule or Wall Thickness, Specification, Nominal Size |
| Inspection & Testing | Destructive and Non-Destructive Testing |
| Surface Finish | Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF, NO.1, NO.4, 2B, BA, HL, 8K, Mirror finish, etc |
| Gauge (Swg & Bwg) | 10, 12, 14, 16, 18, 20 Swg. |
| Temperature Range | -50 to 300°C (Depends on material grade) |
| Pressure Rating | Up to 6000 PSI (Depends on size and schedule) |
| Manufacturing Process | Hot finished, cold finished, heat treatment |
| Packaging | Bundled, Wooden Boxes, Plastic Bags, or as per client's requirements |
| Applications | Dairy Pipe, Oil Pipe, Gas Pipe, Fluid Pipe, Boiler Pipe for Chemical Industry |
Corrosion Resistance
Duplex Steel 2205 Pipe is a cost effective solution for many applications where the 300 series stainless steels are susceptible to chloride stress corrosion cracking. Stress corrosion cracking occurs when stainless steels are subjected to tensile stress, while in contact with solutions containing chlorides. Increasing temperatures also increase the susceptibility of stainless steels to stress corrosion cracking.
The combination of chromium, molybdenum and nitrogen convey the good resistance of 2205 to chloride pitting and crevice corrosion. This resistance is extremely important for services such as marine environments, brackish water, bleaching operations, closed loop water systems and some food processing applications. The high chromium, molybdenum and nitrogen contents of 2205 provide corrosion resistance superior to common stainless steels, such as, 316L and 317L in most environments.
Duplex Steel 2205 Pipe Characteristics
- High resistance to chloride stress corrosion cracking
- Resistance to chloride pitting and crevice corrosion
- Good general corrosion resistance
- Good sulfide stress corrosion resistance
- High Strength
- Good weldability and workability
Packaging&Shipping
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