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AISI 309 Stainless Steel Rod

Available Configurations

Properties common to all products in this list

Grade: AISI 309 Composition: Fe/Cr 22.5/Ni 13/Mn 1.4/Si 0.3/C/P/S Form: Rod Material: Stainless Steel UNS Number: S30900 Commodity: Alloys Diameter: 25.4mm Length: 1000mm Temper: As Drawn
AISI 309 Stainless Steel Rod (UNS S30900) is a solid austenitic stainless steel bar combining the elevated-temperature oxidation resistance of the 22–24% chromium, 12–15% nickel alloy system with the structural versatility of a round section format. With a room-temperature tensile strength of 621 MPa, yield strength of 290 MPa, and elongation of 49%, it offers reliable mechanical performance alongside good machinability and full weldability by all common austenitic fusion processes. Its chromium-oxide passive layer provides excellent resistance to oxidation and scale formation under cyclic thermal exposure, as well as stability in hot acidic and sulphur-bearing atmospheres. Typical applications include furnace rollers, radiant tube hangers, high-temperature fixture components, and structural elements in chemical-processing installations. In research, it provides a reproducible platform for creep testing, oxidation characterisation, and elevated-temperature mechanical property studies.
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Material Properties

Mechanical Properties
Element Value
Hardness - Brinell 160-190
Elongation at break( % ) <60
Modulus of elasticity( GPa ) 190-210
Izod impact strength( J m⁻¹ ) 20-136
Tensile strength( MPa ) 460-1100
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 70-72
Thermal Properties
Element Value
Melting point( C ) 1400-1455
Thermal conductivity( W m⁻¹ K⁻¹ ) 16.3@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 18@20-100°C
Physical Properties
Element Value
Density( gcm⁻³ ) 7.93
each

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Available Configurations

Properties common to all products in this list

Grade: AISI 309 Composition: Fe/Cr 22.5/Ni 13/Mn 1.4/Si 0.3/C/P/S Form: Rod Material: Stainless Steel UNS Number: S30900 Commodity: Alloys Diameter: 25.4mm Length: 1000mm Temper: As Drawn

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Tolerances

Rod
Diameter =<10mm ±10%
Diameter >10mm ±5%
Length <100mm ±1mm
Length >=100mm +5 / -1%