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2205
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022Cr23Ni5Mo3N
boilers and pressure vessels, chemical plants and oil refinery pipelines
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2205 stainless steel is a duplex (austenite + ferrite) stainless steel with the grade UNS S32205 / S31803. Because it has the stainless steel characteristics of both austenite and ferrite, it has excellent strength, corrosion resistance and stress corrosion resistance. It is widely used in high-corrosion and high-strength environments such as marine engineering, chemical equipment, and pressure vessels.
| Type | Chemical composition max % | ||||||||
| C | Mn | P | S | Si | Cr | Ni | Mo | N | |
| 2205 | 0.030 | 2.00 | 0.030 | 0.020 | 1.00 | 22.0-23.0 | 4.5-6.5 | 3.0-3.5 | 0.14-0.20 |
| Type | Yield Strength Rp0.2/MPa | Tension Strength Rm/Mpa | Elongation A/% | Hardness max | |
| min | HBW | HRC | |||
| 2205 | 450 | 655 | 25 | 295 | 31 |
Application
It is low alloy duplex stainless steel, strong and high, can replace S3003 and S3103, can be used in boilers and pressure vessels, chemical plants and oil refinery pipelines.
