Stainless Steel 309

Do you need custom fasteners created with Stainless Steel 309? Since our inception, Vegas Fastener Group has met every challenge of providing Quality, Timely, Cost-effective solutions for specialty fastener applications. Every product is built to your specifications, using your prints if necessary.

Below are the technical specifications of the Stainless Steel 309 Bar Stock we have available to meet your needs.

Allegheny Ludlum Austenitic Stainless Steel 309

Subcategory: Metal; Stainless Steel; T 300 Series Stainless Steel; T S30000 Series Stainless Steel

Key Words: UNS S30900

Composition Notes: Iron content calculated as remainder

Component Wt. %
C 0.2
Cr 22 – 24
Fe 57.975 – 62.975
Mn 2
Ni 12 – 15
P 0.045
S 0.03
Si 0.75

Material Notes:

Characteristics: comparable corrosion resistance, superior resistance to oxidation, and the retention of a larger fraction of room temperature strength than common austenitic alloys. Good creep deformation resistance.

Applications:Heat treatment industry-conveyor belts, rollers, burner parts, refractory supports, retorts linings, oven linings, fans, tube hangers, baskets, and trays. Chemical process industry- containers for hot concentrated acids, ammonia, and sulfur dioxide. Food processing industry- used in contact with hot acetic and citric acid.

Information provided by Allegheny Ludlum

Physical Properties Metric English Comments
Density 8.03 g/cc 0.29 lb/in³ at 20°C
Mechanical Properties
Tensile Strength, Ultimate 621 MPa 90100 psi ASTM E8
Tensile Strength, Ultimate at Elevated Temperature 145 MPa 21000 psi 871°C; ASTM E8
Tensile Strength, Ultimate at Elevated Temperature 248 MPa 36000 psi 760°C; ASTM E8
Tensile Strength, Ultimate at Elevated Temperature 379 MPa 55000 psi 649°C; ASTM E8
Tensile Strength, Ultimate at Elevated Temperature 455 MPa 66000 psi 538°C; ASTM E8
Tensile Strength, Ultimate at Elevated Temperature 497 MPa 72100 psi 427°C; ASTM E8
Tensile Strength, Ultimate at Elevated Temperature 552 MPa 80100 psi 204°C; ASTM E8
Tensile Strength, Ultimate at Elevated Temperature 69 MPa 10000 psi 982°C; ASTM E8
Tensile Strength, Yield 290 MPa 42100 psi 0.2% offset ; ASTM E8
Tensile Strength, Yield at Elevated Temperature 128 MPa 18600 psi 871°C; ASTM E8
Tensile Strength, Yield at Elevated Temperature 138 MPa 20000 psi 760°C; ASTM E8
Tensile Strength, Yield at Elevated Temperature 152 MPa 22000 psi 649°C; ASTM E8
Tensile Strength, Yield at Elevated Temperature 166 MPa 24100 psi 538°C; ASTM E8
Tensile Strength, Yield at Elevated Temperature 207 MPa 30000 psi 427°C; ASTM E8
Tensile Strength, Yield at Elevated Temperature 241 MPa 35000 psi 204°C; ASTM E8
Elongation at Break 49 % 49 % ASTM E8
Elongation at Break at Elevated Temperature 35 % 35 % 649°C; ASTM E8
Elongation at Break at Elevated Temperature 36 % 36 % 538°C; ASTM E8
Elongation at Break at Elevated Temperature 40 % 40 % 427°C; ASTM E8
Elongation at Break at Elevated Temperature 40 % 40 % 760°C; ASTM E8
Elongation at Break at Elevated Temperature 46 % 46 % 204°C; ASTM E8
Elongation at Break at Elevated Temperature 50 % 50 % 871°C; ASTM E8
Elongation at Break at Elevated Temperature 65 % 65 % 982°C; ASTM E8
Creep Strength 24 MPa 3480 psi 1450°F; 1% in 10,000 hr
Creep Strength 83 MPa 12000 psi 1100°F, 1% in 10,000 hr
Rupture Strength 17 MPa 2470 psi 1650°F; 10,000 hr
Rupture Strength 83 MPa 12000 psi 1250°F, 10,000 hr
Modulus of Elasticity 200 GPa 29000 ksi
Shear Modulus 77 GPa 11200 ksi
Electrical Properties
Electrical Resistivity 7.8e-005 ohm-cm 7.8e-005 ohm-cm at 20°C
Electrical Resistivity at Elevated Temperature 0.0001148 ohm-cm 0.0001148 ohm-cm at 1200°C
Magnetic Permeability 1.02 1.02 at 200H
Thermal Properties
CTE, linear 20°C 15.6 µm/m-°C 8.67 µin/in-°F 20°C-100°C
CTE, linear 500°C 17.6 µm/m-°C 9.78 µin/in-°F 20°C-500°C
CTE, linear 1000°C 19.4 µm/m-°C 10.8 µin/in-°F 20°C-1000°C
Heat Capacity 0.502 J/g-°C 0.12 BTU/lb-°F 0°C-100°C
Thermal Conductivity 15.6 W/m-K 108 BTU-in/hr-ft²-°F 20°C-100°C
Thermal Conductivity at Elevated Temperature 18.7 W/m-K 130 BTU-in/hr-ft²-°F 20°C-500°C