309 Stainless Steel Plate Comprehensive Analysis

Jan 17, 2026

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--High Alloy Content, Oxidation Resistance and High Temperature Applications

309 stainless steel plate is a high-alloy austenitic heat-resistant stainless steel, which holds a significant position in the industrial field due to its excellent high-temperature stability and oxidation resistance.

Its core advantage stems from its unique high-alloy design, with a chromium (Cr) content of approximately 23% and nickel (Ni) content of about 13%. This enables it to possess outstanding anti-oxidation and anti-carburization capabilities at intermittent operating temperatures up to 1150℃. Compared to ordinary stainless steels like 304, it can withstand extreme thermal cycles for a long time without the surface oxide scale peeling off or undergoing brittle transformation.

This material is specifically designed for use in high-temperature environments. It is an ideal choice for manufacturing key equipment such as the inner lining of industrial furnaces, radiation tubes, heat treatment baskets, hot air ducts, and burner components. It is particularly suitable for complex working conditions involving thermal fatigue and corrosive atmospheres.

Jiangsu Cunrui Metal Products Co., Ltd. specializes in supplying all kinds of high-quality 309 stainless steel plates, providing reliable material support for your heat-resistant projects.

If you need 309 stainless steel plates, please feel free to contact us - Jiangsu Cunrui Metal Products Co., Ltd.