Large Diameter Duplex S32205 / Alloy 2205 Duplex Stainless Steel Pipe DN300 - DN800
| Material | 201,302,303,304,3041,316,3161,321,309s,310s,2205 2507 904l etc |
| Size(round pipe) | 9.5-219 mm or customized |
| Size (square pipe) | 10x10-150x100 mm or customized |
| Size (oval pipe) | 30x15,80x40 mm or customized |
| Thickness | 0.24-3 mm |
| Length | 6m or according to customer's request |
| Outer diameter | 8-219mm |
| | Outer diameter :0.2mm Thickness :0.02mm Length :+0.5mm |
| Process method | Code drawn, annealed with nitrogen protection, ultrasonic,automatic shape, polished |
| | A: sanded B: 400#-600# mirror C: hairline brushed D: TIN titanlum E: HL brushed & mirror (two kinds of finishing for one pipe) |
General Properties
Duplex 2205 is a two-phase, ferritic, austenitic 22% chromium, 3% molybdenum, 5 to 6% nickel alloyed stainless steel. It is the most widely used duplex stainless steel grade and is characterized by high yield strength, double that of the standard austenitic stainless steel grades. It also demonstrates good fatigue strength, as well as outstanding resistance to stress corrosion cracking, crevice, pitting, erosion, and general corrosion in severe environments.
Duplex 2205 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 2205 duplex stainless steel consists of austenite pools surrounded by a continuous ferrite phase. In the annealed condition, 2205 contains approximately 40-50% ferrite. Often referred to as the work horse grade, 2205 is the most widely used grade in the duplex family of stainless steels.
Corrosion Resistance
2205 duplex stainless steel 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.
Chemical Composition, %
| Cr | Ni | Mo | C | N |
| 22.0-23.0 | 4.50-6.50 | 3.00-3.50 | .030 Max | 0.14-0.20 |
| Mn | Si | P | S | Fe |
| 2.00 Max | 1.00 Max | .030 Max | .020 Max | Balance |
Pipe dimension
- Out diameter 1/2''-36''
- Wall thickness Sch5s-XXS
- Length MAX 12M
Characteristics of Duplex 2205
- 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
Applications:
Chemical processing, transport and storage pressure vessels, tanks, piping, and heat exchangers
Oil and gas exploration and processing equipment piping, tubing, and heat exchangers
Marine and other high chloride environments
Effluent scrubbing systems
Pulp and paper industry digesters, bleaching equipment, and stock-handling systems
Cargo tanks for ships and trucks
Food processing equipment
Biofuels plants
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Large Diameter Duplex S32205 / Alloy 2205 Duplex Stainless Steel Pipe DN300 - DN800 Images
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