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321, 309S, 310S Hot Rolled Heat-Resistant Stainless Steel Plate
- Excellent high temperature oxidation resistance and thermal stability
- 321, 309S, 310S grade series for different continuous high temperature requirements
- Good creep resistance and microstructure stability under long-term heating
- Suitable for furnaces, boilers, heat exchangers, kilns and high temperature piping
- Full MTC 3.1/3.2 certification, support customized cutting
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Product Overview
321, 309S, 310S Hot Rolled Heat-Resistant Stainless Steel Plate is a series of austenitic stainless steel designed for continuous high temperature service. Manufactured according to ASTM A240, GB/T4237 and EN 10088 standards, these grades are widely used in furnaces, boilers, heat exchangers, kilns, high temperature piping and industrial heating equipment.
321 is titanium stabilized austenitic stainless steel. It provides good intergranular corrosion resistance and high temperature strength, suitable for operating temperatures up to approximately 900°C. 309S offers higher chromium and nickel content, providing better oxidation resistance and thermal cycling performance, suitable for continuous service up to around 1000°C. 310S has the highest Cr-Ni content among the three grades, delivering excellent high temperature oxidation resistance and carburization resistance, suitable for severe high temperature environments up to approximately 1100°C.
Our heat-resistant stainless plate is available in thickness from 3.0mm to 100mm, standard widths of 1500mm, 1800mm, 2000mm and 2500mm, and standard lengths of 6000mm and 12000mm. Custom fixed-length cutting is supported. The No.1 hot rolled pickled surface ensures good performance for high temperature industrial applications. All products are supplied with Mill Test Certificate, and third-party inspection such as SGS or BV is acceptable.
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FAQs
Heat-resistant stainless steel plate is austenitic stainless steel designed for continuous high temperature service, providing oxidation resistance, thermal stability and creep resistance.
321 is suitable for high temperature up to around 900°C; 309S offers better oxidation resistance up to around 1000°C; 310S provides the highest heat resistance up to around 1100°C.
They are widely used for furnaces, boilers, heat exchangers, kilns, high temperature piping, thermal equipment and industrial heating components.
Yes, 321, 309S and 310S have good weldability. Suitable welding procedure and filler material should be selected based on grade and service condition.
MOQ is 5 tons. In-stock goods can be delivered within 3–7 days; customized production usually takes 10–25 days.
We supply Mill Test Certificate EN 10204 3.1/3.2, ISO, SGS and BV inspection certificates.
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