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Contact SupplierBuy corrosion resistant and highly durable 31803 Duplex Steel Products from us as per requirements. We offer them in varied shapes, grades and sizes to cater to varied demands of buyers. Our company is ranked among responsive and responsible traders of a comprehensive assortment 31803 Duplex Steel Products. They function optimally and guarantee long service life.
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.
Applications :
Corrosion Resistance :
Heat Resistance :
Welding Characteristics :
Heat Treatment :
Processing – Hot Forming : Most Duplex 2205 producers recommend a maximum hot forming temperature between 2010 and 2100oF (1100 to 1150oC). If the shape of the work piece is not compact, the edges may be significantly cooler than the bulk, and there is risk of cracking in the cooler regions.
Processing – Cold Forming : Duplex 2205 has shown good formability in a variety of fabrications. The high strength of Duplex 2205 can pose problems. Even when the equipment has sufficient power, allowance must be made for higher spring-back caused by the grade’s high strength.
Machinability : Duplex 2205 is somewhat more difficult to machine than the 300 series austenitic stainless steels. Higher cutting forces are required and more rapid tool wear is typical. Some guidelines for machining are: A) Use powerful, rigid machines with extremely strong rigid mounting of tools and work piece, B) Minimize vibration by keeping the tool extension as short as possible, C) Use a nose radius on the tool, no longer than necessary, for carbides that have a sharp edge while still providing adequate strength, D) Design machining sequences to always provide for a depth of cut below the work hardened layer resulting from the previous passes.
Standards :
C | Mn | Si | P | S | Cr | Mo | Ni | N | |
---|---|---|---|---|---|---|---|---|---|
2205 | 0.03 | 2 | 1 | 0.03 | 0.02 | min: 21.0 | min: 2.5 | min: 4.5 | min: 0.08 |
(S31803) | max | Max | max | max | max | max: 23.0 | max: 3.5 | max: 6.5 | max: 0.20 |
2205 | 0.03 | 2 | 1 | 0.03 | 0.02 | min: 22.0 | min: 3.0 | min: 4.5 | min: 0.14 |
(S32205) | max | Max | max | max | max | max: 23.0 | max: 3.5 | max: 6.5 | max: 0.20 |
Grade | Tensile Strength ksi (min) | Yield Strength 0.2% ksi (min) | Elongation % | Hardness (HB) MAX |
---|---|---|---|---|
2205 | 90 | 65 | 25 | 217 |
Density lbm/in3 | Electrical Resistivity mW•in | Thermal Conductivity (BTU/hr•ft•°F) | Heat Capacity BTU/lbm•°F | Electrical Resistivity (in x 10-6) | |
---|---|---|---|---|---|
at 68oF | 0.28 | 27.6 | 8.7 | 0.11 | 33.5 |
at 212oF | 26.1 | 9.2 | 0.12 | 35.4 | |
at 392oF | 25.4 | 9.8 | 0.13 | 37.4 | |
at 572oF | 24.9 | 10.4 | 0.13 | 39.4 |