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AISI 310S Stainless Steel Rod

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Grade: AISI 310S Composition: Fe/Cr 25/Ni 20.5/Mn Form: Rod Material: Stainless Steel UNS Number: S31008 Commodity: Alloys Diameter: 25.4mm Length: 1000mm Temper: As Drawn
AISI 310S Stainless Steel Rod (EN 1.4845 / UNS S31008) is the low-carbon modification of AISI 310, combining the outstanding oxidation resistance of the 24–26% chromium, 19–22% nickel alloy system with a carbon maximum of 0.08 wt% that minimises sensitisation in welded and thermally cycled assemblies. It delivers room-temperature properties of 624 MPa tensile strength, 314 MPa yield strength, and 42.6% elongation, with strength retained meaningfully to approximately 1100 °C. Fully weldable by GTAW/TIG, GMAW/MIG, SMAW, and SAW processes without the sensitisation risk of higher-carbon grades, and solution annealable at 1120–1175 °C to restore a fully austenitic, carbide-free microstructure. Its combination of oxidation resistance, weld stability, and reliable creep performance makes it the preferred choice over standard 310 wherever post-weld integrity or prolonged exposure in the sensitisation range is a concern. Typical applications include furnace rollers, radiant tube hangers, heat-treatment fixtures, and chemical-processing components. In research, it provides a stable platform for high-temperature oxidation, creep, and microstructural studies.
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Material Properties

Mechanical Properties
Element Value
Hardness - Brinell ≤217
Elongation at break( % ) 45
Modulus of elasticity( GPa ) 200
Tensile strength( MPa ) 624
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 94
Thermal Properties
Element Value
Melting point( C ) 1354-1402
Thermal conductivity( W m⁻¹ K⁻¹ ) 15.6@20-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 15.9@20-100°C
Physical Properties
Element Value
Density( gcm⁻³ ) 8.03
each

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Available Configurations

Properties common to all products in this list

Grade: AISI 310S Composition: Fe/Cr 25/Ni 20.5/Mn Form: Rod Material: Stainless Steel UNS Number: S31008 Commodity: Alloys Diameter: 25.4mm Length: 1000mm Temper: As Drawn

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Tolerances

Rod
Diameter =<10mm ±10%
Diameter >10mm ±5%