310S round bar belongs to austenitic chromium-nickel stainless steel, corresponding to the Chinese grade 06Cr25Ni20; high-temperature installations requiring hollow conveying sections in the same alloy can be completed with stainless steel round tube in 310S seamless grade for furnace and boiler lines.
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
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
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
Furnace tubes, furnace rollers, refractory supports used in machinery manufacturing workshops.supports long-term exposure to heat without loss of structural rigidity.
High-temperature reactors, distillation towers, heat exchanger components used in chemical production workshops.resists aggressive corrosive media in high-temp distillation processes.
Boiler superheater tubes, reheater tubes, burner components used in energy production plants.guarantees reliability in boiler superheaters and burner assemblies.
Catalyst converter carriers and support structures used in automotive manufacturing plants.
Baking equipment, pharmaceutical drying equipment parts used in pharmaceutical and food production areas.
Solution Annealing: 1050–1150℃, hold then rapid cooling
Stress Relief Annealing: 850–900℃, hold then slow cooling
Stock: Standard 16–60mm available, delivery within 1–3 working days
Customization: 7–15 days, test reports available
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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