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2205 duplex stainless steel is composed of 22% chromium,3% molybdenum and 5-6% nickel nitrogen duplex stainless steel.It has high strength, good impact toughness and good overall and local stress corrosion resistance.
The yield strength of 2205 duplex stainless steel is more than twice as high as that of ordinary austenitic stainless steel. This feature enables designers to reduce weight in designing products, making this alloy more cost-effective than 316,317L. This alloy is especially suitable for the temperature range of - 50 F/+600 F. This alloy may also be considered for applications beyond this temperature range, but there are some limitations, especially when applied to welded structures.
Chemical Composition and Mechanical property
| Grade | C(%) | Si(%) | Mn(%) | P(%） | S(%) | Cr(%) | Ni(%) | N(%) | Mo(%) |
| 2205/S32205/S31803 | ≤0.03 | ≤1.0 | ≤2.0 | ≤0.03 | ≤0.02 | ≤22.0-23.0 | ≤4.5-6.5 | ≤0.14-0.20 | 3.0-3.50 |
| Grade | tensile strengthMpa | Yield StrengthMpa | Elongation(%) | rate of reduction in area(%) | Hardness(HV) | Density(g/cm3) |
| 2205/S32205/S31803 | ≥620 | ≥450 | ≥25 | ≥50 | ≤320 | 8.0 |
Available for 2205 grade
| Type | Thickness | Width | Finish | Standard | Origin |
| Cold rolled(2B) | 1.5mm-3.0mm | 1219mm | 2B / No.4 / HL / BA / Mirror etc | GB/ASTM/JIS/DIN etc | TISCO / JISCO etc |
| Hot rolled(No.1) | 3.0mm-40.0mm | 1500mm | No.1/No.4/HL/Mirror etc | GB/ASTM/JIS/DIN etc | JISCO European /Japan etc |
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