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| Analysis of corrosion resistance of 445J2 ferrite stainless steel |
| REN Juanhong1, CHEN Anzhong1, GAO Renqiang1, PAN Jixiang2 |
1. Research Institute, JISCO, Jiayuguan 735100, China;
2. Stainless Steel Branch, JISCO, Jiayuguan 735100, China |
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Abstract The microstructure and corrosion resistance of ultra-pure ferritic stainless steel 445J2 and austenitic stainless steel 316L were studied by means of microstructure analysis, tensile test, salt spray corrosion test, electrochemical test, and stress corrosion test. The results showed that 445J2 stainless steel had low work hardening orientation and good deep drawing formability. Compared with 316L, the 445J2 stainless steel had lower density, better thermal conductivity, smaller coefficient of thermal expansion, less thermal deformation, better salt spray corrosion resistance and pitting corrosion resistance. Moreover, it had no intergranular corrosion sensitivity and stress corrosion tendency. The 445J2 stainless steel could replace 316L austenitic stainless steel for the application in water system, building roof, curtain wall and many other fields with high corrosion resistance requirements.
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Received: 02 June 2022
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2023, Vol. 41 
