310S (GB 06Cr25Ni20) is an ultra-high chromium-nickel austenitic heat-resistant stainless steel, with 25% chromium and 20% nickel. It boasts industry-leading high-temperature resistance, oxidation resistance, and resistance to high-temperature sulfide corrosion, making it a specialized pipe material for long-term ultra-high temperature applications. Our products primarily consist of seamless high-temperature thick-walled pipes, complemented by high-temperature welded pipes. We use genuine original materials and provide material quality certificates and high-temperature performance test reports. Custom processing services such as length cutting, beveling, bending, and drilling are available.

Product Parameters

Chemical materials compare information(%)：

Core Advantages (Compared to 304 and 309S)

Extreme High Temperature Resistance and Oxidation Resistance:Continuous long-term operating temperature can reach 1050~1100℃, with short-term maximum tolerance of 1200℃. A dense and stable protective layer forms at high temperatures, making it resistant to peeling, oxidation, and burn-through. Its heat resistance far exceeds that of 304 and 309S, representing the pinnacle of high-temperature resistance among conventional stainless steels.

Resistant to High-Temperature Sulfur and Flue Gas Corrosion:Exhibits outstanding resistance to sulfide corrosion in the face of incineration exhaust gases, sulfur-containing hot gases, and oxidizing atmospheres of metallurgical kilns. It is not prone to rusting and perforation even under long-term high-temperature flue gas erosion.

Stable High-Temperature Strength and Creep Resistance:Does not soften, deform, or sag under high-temperature environments, significantly extending the service life of high-pressure, high-temperature furnace tubes and load-bearing pipelines.

Resistant to Severe Thermal Cycling:Not prone to cracking under repeated rapid heating and cooling, and intermittent high-temperature furnace conditions. Suitable for equipment with frequent start-ups and shutdowns during quenching and annealing processes.

Resistant to Severe Thermal Cycling:Not easily cracked under repeated rapid heating and cooling, and intermittent high-temperature furnace conditions. Suitable for equipment with frequent start-ups and shutdowns during quenching and annealing processes. Excellent corrosion resistance at room temperature. Its rust prevention and resistance to weak acids and alkalis at room temperature are superior to 309 and 304, possessing both heat resistance and basic corrosion protection.

Applicable industries and scenarios:

Heat treatment equipment: high-temperature annealing furnaces, roller furnace radiant tubes, vacuum furnaces, high-temperature quenching pipelines;

Environmental incineration: large-scale waste incinerators, high-temperature flues, waste heat boiler heat exchanger tube bundles;

Metallurgy and ceramics: high-temperature kilns, sintering furnaces, high-temperature gas transmission pipelines;

Petrochemical and thermal power: pyrolysis furnace tubes, high-temperature heating furnaces, high-temperature steam superheating pipelines;

Heat treatment accessories: high-temperature material racks, furnace supports, heat-resistant tooling components.