309S Austenitic Stainless Steel Plate No.1 Finish 3mm-40mm Oxidation Resistant for Heat Treatment Furnaces

309S Austenitic Stainless Steel Plate for Heat Treatment Furnaces

Our 309S Stainless Steel Plate is a high-chromium, high-nickel austenitic stainless steel engineered for superior oxidation resistance in elevated temperature environments up to 1000°C. The low carbon variant prevents sensitization during welding and high-temperature service. The No.1 hot rolled finish is ideal for furnace components, heat treatment fixtures, and thermal processing equipment. Available from 3mm to 40mm thickness.

Key Features

• Superior Oxidation Resistance: 23Cr-13Ni composition resists scaling up to 1000°C in continuous service
• Low Carbon Content: 309S variant (≤0.08% C) minimizes carbide precipitation during welding
• Good High-Temperature Strength: Maintains structural integrity under thermal cycling conditions
• Excellent Sulfidation Resistance: Performs well in sulfur-containing atmospheres common in petrochemical processes

Applications

• Heat treatment furnace linings and components
• Annealing boxes and baskets
• Burner components and flame tubes
• Cement kiln and lime kiln internals
• Petrochemical heater tubes and supports
• Waste incineration plant components

Contact us for 309S oxidation resistant stainless steel plates with technical data and competitive pricing.