Allegheny Ludlum Stainless Steel Type 301, 1/4 Hard (UNS S30100)
Subcategory: Ferrous Metal; Metal; Stainless Steel; T 300 Series Stainless Steel
Key Words: ASTM A240; ASTM A666
Component | Wt. % | ![](/images/spacer.gif) | | C | Max 0.15 | | Cr | 16 - 18 | | Fe | 75 | |
| Component | Wt. % | ![](/images/spacer.gif) | | Mn | Max 2 | | N | Max 0.1 | | Ni | 6 - 8 | |
| Component | Wt. % | ![](/images/spacer.gif) | | P | Max 0.045 | | S | Max 0.03 | | Si | Max 0.75 | |
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Material Notes: Iron content above calculated as balance. Allegheny Ludlum Type 301 is a high strength grade of steel available in six conditions or tempers, its resistance to atmosphere corrosion and its bright, attractive surface make it an excellent choice for decorative structural applications. Applications include automobile molding and trim, wheel cover, conveyor belts, kitchen equipment, roof draining systems, hose clamps, springs, truck and trailer bodies, railway and subway cars. By varying the chemical composition within the limits set by the ASTM Specifications and by temper rolling, a broad range of magnetic and mechanical properties can be obtained for a variety of applications. Information provided by Allegheny Ludlum Corporation.
Physical Properties | Metric | English | Comments |
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Density | 8.03 g/cc | 0.29 lb/in³ | |
Mechanical Properties |
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Hardness, Brinell | 255 | 255 | |
Hardness, Rockwell C | 25 | 25 | |
Tensile Strength, Ultimate | Min 862 MPa | Min 125000 psi | |
Tensile Strength, Yield | Min 517 MPa | Min 75000 psi | 0.2% offset |
Elongation at Break | Min 25 % | Min 25 % | in 2" (50 mm) |
Modulus of Elasticity | 193 GPa | 28000 ksi | as rolled longitudinal |
Modulus of Elasticity | 197 GPa | 28600 ksi | as rolled transverse |
Compressive Yield Strength | 345 MPa | 50000 psi | longitudinal |
Compressive Yield Strength | 627 MPa | 90900 psi | transverse |
Charpy Impact | 150 J | 111 ft-lb | at 23°C; 150 J at -73°; 150 J at 196° |
Fatigue Strength | 303 MPa | 43900 psi | endurance limit; test details not reported |
Electrical Properties |
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Electrical Resistivity | 7.2e-005 ohm-cm | 7.2e-005 ohm-cm | |
Magnetic Permeability | Max 1.02 | Max 1.02 | typically < 1.02 at 200H; increases with cold work. |
Thermal Properties |
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CTE, linear 20°C | 16.6 µm/m-°C | 9.22 µin/in-°F | Range 20° - 100°C |
CTE, linear 250°C | 17.6 µm/m-°C | 9.78 µin/in-°F | Range 20° - 300°C |
CTE, linear 500°C | 18.6 µm/m-°C | 10.3 µin/in-°F | Range 20°- 500°C; 19.5 µm/m-°C Range 20° - 700°C |
Specific Heat Capacity | 0.5 J/g-°C | 0.12 BTU/lb-°F | between 0° -100° C |
Thermal Conductivity | 16.3 W/m-K | 113 BTU-in/hr-ft²-°F | at 100°C; 21.4 W/m*K at 500°C |
Melting Point | 1399 - 1421 °C | 2550 - 2590 °F | |
Solidus | 1399 °C | 2550 °F | |
Liquidus | 1421 °C | 2590 °F | |
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