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Home Stainless Steel Bars 310S High Temp Steel Round Bar

310S High Temp Steel Round Bar

Diameter 8-120mm, stable strength at 1200℃, heating furnace support

310S round bar belongs to austenitic chromium-nickel stainless steel, corresponding to the Chinese grade 06Cr25Ni20.

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  • Excellent High-Temperature Resistance

    Withstands up to 1200℃, continuous service at 1150℃, gradual softening only above 800℃.

  • Superior Oxidation & Corrosion Resistance

    High nickel (19.00–22.00%) and chromium (24.00–26.00%) content forms a dense oxide film, providing resistance to oxidation and multiple corrosive media.

  • Good High-Temperature Mechanical Properties

    Retains strength and creep resistance at high temperatures. Tensile strength ≥ 520MPa, yield strength ≥ 205MPa, elongation ≥ 40%.

  • Excellent Processability & Weldability

    Non-magnetic in solution-annealed condition, annealed hardness ≤ 187HB, suitable for both cold and hot working, with good weld joint properties.

Product Specifications

Physical & Mechanical Properties

Physical Properties

  • Density: 7.98 g/cm³, stable structure.

  • Melting Point: 1398–1454℃.

  • Thermal Conductivity: ~ 14.2 W/(m·K) at 20℃.

  • Thermal Expansion Coefficient: ~ 15.9×10⁻⁶/K (20–100℃).

Mechanical Properties (Room Temperature)

  • Tensile Strength: ≥ 520MPa

  • Yield Strength: ≥ 205MPa

  • Elongation: ≥ 40%

  • Reduction of Area: ≥ 50%

  • Hardness: Annealed condition ≤ 187HB

Specification & Supply Range

Diameter Range

  • Small Diameter (Cold Drawn): 2–18mm, tolerance ±0.03mm

  • Standard (Hot Rolled / Cold Drawn): 16–60mm, tolerance ±0.05mm (cold drawn) or ±0.1mm (hot rolled)

  • Large Diameter (Forged / Hot Rolled): 60–500mm, tolerance ±0.2mm (forged) or ±0.15mm (hot rolled)

Length

  • Standard 6m/piece, customizable, cut-to-length tolerance ±5mm

Surface Condition

  • Hot Rolled Black Surface: Suitable for further machining

  • Cold Drawn Bright Surface: Ra ≤ 1.6μm, for high precision and surface finish requirements

  • Special Treatment: Polished (Ra ≤ 0.8μm), passivated for enhanced corrosion resistance

Pricing Calculation

Workshop & Manufacturing Machine

Stainless Steel Bar Inventory Racking System

Spectrometer for Alloy Composition Analysis

Finished Stainless Steel Bars on Storage Racks

Palletized Stainless Steel Bars on Workshop Floor

Secured Stainless Steel Bar Bundles for Shipment

Forklift Loading Bundled Stainless Steel Bars into Freight Truck

Product Applications

  • Industrial Furnaces

    Furnace tubes, furnace rollers, refractory supports

  • Petrochemical Industry

    High-temperature reactors, distillation towers, heat exchanger components

  • Power & Energy

    Boiler superheater tubes, reheater tubes, burner components

  • Automotive Exhaust Purification

    Catalyst converter carriers and support structures

  • Food & Pharmaceutical

    Baking equipment, pharmaceutical drying equipment parts

Additional Information

Heat Treatment

  • Solution Annealing: 1050–1150℃, hold then rapid cooling

  • Stress Relief Annealing: 850–900℃, hold then slow cooling

Welding

  • Recommended Methods: TIG (Argon Arc Welding), MIG (Gas Metal Arc Welding)
  • Filler Material: ER310 wire or E310 electrode
  • Key Points: Pre-clean surfaces, control current/voltage/speed, interpass temperature ≤150℃, post-weld solution treatment optional

Stock & Customization

  • Stock: Standard 16–60mm available, delivery within 1–3 working days

  • Customization: 7–15 days, test reports available

FAQ

What makes 310S suitable for high-temperature round bars?

The high chromium and nickel content provides excellent oxidation and scaling resistance at elevated temperatures.

What temperature range can 310S round bars withstand?

310S round bars can operate continuously at temperatures up to approximately 1100°C.

What industries use 310S high-temperature round bars?

Furnace manufacturing, thermal processing, petrochemical, and power generation industries.

Is 310S round bar easy to machine?

Machinability is moderate; appropriate tooling and cutting parameters are recommended.

Can these bars be supplied for high-temperature structural applications?

Yes. They are suitable for load-bearing components exposed to high heat.

Need more details on stainless steel products? Feel free to contact Walmay anytime.

Walmay will help match the right stainless product form and specification for your application, confirm quantities and packing needs, and provide requested documents based on order requirements.

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