ASTM A312 310S Stainless Steel Seamless Pipe UNS S31008 High Temperature & Corrosion Resistant For Furnaces

ASTM A312 310S Stainless Steel Seamless Pipe UNS S31008 is a high-temperature austenitic stainless steel pipe designed for demanding industrial service where excellent oxidation resistance, corrosion resistance, and elevated-temperature strength are required. Manufactured in accordance with ASTM A312, this seamless pipe provides a uniform structure and reliable performance for high-temperature piping systems.

Specifications of ASTM A312 310S Stainless Steel Seamless Pipe

ASTM A312 310S Stainless Steel Seamless Pipe (UNS S31008) is available in a wide range of outside diameters, wall thicknesses, and lengths for high-temperature furnace, heat-treatment, petrochemical, and industrial piping applications.

310S stainless steel seamless pipe primarily contains chromium (Cr) and nickel (Ni) elements, with chromium content approximately 25% and nickel content about 20%. This high chromium and nickel content provides excellent oxidation resistance and corrosion resistance. Additionally, it contains small amounts of silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), and other elements.

With its high chromium and nickel content, 310S stainless steel offers excellent resistance to oxidation and carburization at elevated temperatures while maintaining good mechanical stability. It is particularly suitable for industrial furnaces, heat treatment equipment, furnace components, petrochemical processing, thermal processing systems, and other high-temperature applications.

• Material: 310S Stainless Steel / UNS S31008
• Standard: ASTM A312
• Product Type: Seamless Stainless Steel Pipe
• corrosion resistant stainless steel pipe
  high temperature resistant seamless pipe
  310S seamless pipe for furnaces
• Good resistance to carburization
• Excellent performance in furnace and heat-treatment applications
• Good weldability and fabrication properties
• Suitable for high-temperature industrial piping systems
• Custom OD, wall thickness, and length available

ASTM A312 310S Stainless Steel Seamless Pipe (UNS S31008) is an austenitic stainless steel with high chromium and nickel content. Its chemical composition provides excellent resistance to oxidation, corrosion, and high-temperature environments, making it suitable for industrial furnaces, heat treatment equipment, petrochemical systems, and high-temperature piping applications.

• Chromium (Cr): 24.0–26.0% — Provides excellent oxidation resistance and enhances corrosion resistance at elevated temperatures.
• Nickel (Ni): 19.0–22.0% — Stabilizes the austenitic structure and contributes to high-temperature strength and corrosion resistance.
• Carbon (C): ≤ 0.08% — The low carbon content helps improve weldability and reduce the risk of sensitization.
• Manganese (Mn) and Silicon (Si) — Contribute to the overall manufacturing and mechanical properties of the stainless steel.
• Iron (Fe): Balance — Forms the primary matrix of the alloy.

The following values are commonly specified for ASTM A312 TP310S / UNS S31008 stainless steel seamless pipe in the annealed condition.

• High-temperature oxidation resistance
• Excellent corrosion resistance in many high-temperature environments
• Good thermal stability
• Good ductility and toughness
• Low thermal conductivity compared with carbon steel
• High coefficient of thermal expansion
• Austenitic and generally non-magnetic in the annealed condition

310S Stainless Steel Seamless Pipe is commonly used for:

• Industrial furnaces
• Heat treatment furnaces
• Furnace tubes and piping
• Petrochemical processing equipment
• Heat exchangers
• Thermal processing systems
• High-temperature gas pipelines
• Chemical processing equipment
• Power generation equipment
• High-temperature exhaust and process systems

ASTM A312 310S Stainless Steel Seamless Pipe (UNS S31008) is widely used in furnace and heat-treatment equipment because of its excellent high-temperature oxidation resistance, corrosion resistance, and thermal stability. Its high chromium and nickel content allows it to maintain reliable performance in demanding elevated-temperature environments.

Typical Furnace Applications

1. Excellent oxidation resistance
The high chromium content of 310S helps form a protective oxide layer, providing good resistance to oxidation during prolonged exposure to elevated temperatures.

2. Good high-temperature stability
The high nickel content helps maintain the austenitic structure and contributes to stable performance under high-temperature service conditions.

3. Good resistance to carburizing environments
310S can be used in selected furnace atmospheres where carburization is a concern, subject to the actual operating conditions.

4. Good corrosion resistance
310S offers good corrosion resistance in many oxidizing and high-temperature environments, making it suitable for demanding furnace systems.

5. Seamless construction
The seamless pipe design provides a uniform pipe structure without a longitudinal weld seam, making it useful for demanding process and pressure applications where seamless construction is specified.

• Furnace gas piping
• Burner system piping
• Protective atmosphere piping
• High-temperature process lines
• Furnace exhaust systems
• Heat-treatment gas circulation
• High-temperature cooling or process circuits
• Furnace auxiliary piping

The suitability of 310S depends on the actual furnace temperature, atmosphere, pressure, thermal cycling, and corrosive medium. For particularly severe furnace environments, material selection should be based on the specific operating conditions rather than temperature alone.