303 Stainless Steel Data Sheet
| Physical Properties | Metric | English |
| Density | 8.00 g/cc | 0.289 lb/in³ |
| Mechanical Properties | Metric | English |
| Tensile Strength, Ultimate | 620 MPa | 89900 psi |
| 140 MPa | 20300 psi | |
| @Temperature 870 °C | @Temperature 1600 °F | |
| 205 MPa | 29700 psi | |
| @Temperature 760 °C | @Temperature 1400 °F | |
| 310 MPa | 45000 psi | |
| @Temperature 650 °C | @Temperature 1200 °F | |
| 380 MPa | 55100 psi | |
| @Temperature 540 °C | @Temperature 1000 °F | |
| 420 MPa | 60900 psi | |
| @Temperature 425 °C | @Temperature 797 °F | |
| Tensile Strength, Yield | 240 MPa | 34800 psi |
| @Strain 0.200 % | @Strain 0.200 % | |
| 70.0 MPa | 10200 psi | |
| @Strain 0.200 %, | @Strain 0.200 %, | |
| Temperature 870 °C | Temperature 1600 °F | |
| 145 MPa | 21000 psi | |
| @Strain 0.200 %, | @Strain 0.200 %, | |
| Temperature 760 °C | Temperature 1400 °F | |
| 205 MPa | 29700 psi | |
| @Strain 0.200 %, | @Strain 0.200 %, | |
| Temperature 650 °C | Temperature 1200 °F | |
| 235 MPa | 34100 psi | |
| @Strain 0.200 %, | @Strain 0.200 %, | |
| Temperature 540 °C | Temperature 1000 °F | |
| 240 MPa | 34800 psi | |
| @Strain 0.200 %, | @Strain 0.200 %, | |
| Temperature 425 °C | Temperature 797 °F | |
| Elongation at Break | 50% | 50% |
| 30% | 30% | |
| @Temperature 650 °C | @Temperature 1200 °F | |
| 31% | 31% | |
| @Temperature 760 °C | @Temperature 1400 °F | |
| 34% | 34% | |
| @Temperature 870 °C | @Temperature 1600 °F | |
| 34% | 34% | |
| @Temperature 540 °C | @Temperature 1000 °F | |
| 35% | 35% | |
| @Temperature 425 °C | @Temperature 797 °F | |
| Tensile Modulus | 193 GPa | 28000 ksi |
| Poissons Ratio | 0.25 | 0.25 |
| Fatigue Strength | 240 MPa | 34800 psi |
| 330 MPa | 47900 psi | |
| Shear Modulus | 77.2 GPa | 11200 ksi |
| Electrical Properties | Metric | English |
| Electrical Resistivity | 0.0000720 ohm-cm | 0.0000720 ohm-cm |
| Magnetic Permeability | 1.008 | 1.008 |
| Thermal Properties | Metric | English |
| CTE, linear | 17.2 µm/m-°C | 9.56 µin/in-°F |
| @Temperature 0.000 – 100 °C | @Temperature 32.0 – 212 °F | |
| 17.8 µm/m-°C | 9.89 µin/in-°F | |
| @Temperature 0.000 – 315 °C | @Temperature 32.0 – 599 °F | |
| 18.4 µm/m-°C | 10.2 µin/in-°F | |
| @Temperature 0.000 – 540 °C | @Temperature 32.0 – 1000 °F | |
| 18.7 µm/m-°C | 10.4 µin/in-°F | |
| @Temperature 0.000 – 650 °C | @Temperature 32.0 – 1200 °F | |
| Specific Heat Capacity | 0.500 J/g-°C | 0.120 BTU/lb-°F |
| @Temperature 0.000 – 100 °C | @Temperature 32.0 – 212 °F | |
| Thermal Conductivity | 16.2 W/m-K | 112 BTU-in/hr-ft²-°F |
| @Temperature 100 °C | @Temperature 212 °F | |
| 21.5 W/m-K | 149 BTU-in/hr-ft²-°F | |
| @Temperature 500 °C | @Temperature 932 °F | |
| Melting Point | 1400 – 1420 °C | 2550 – 2590 °F |
| Solidus | 1400 °C | 2550 °F |
| Liquidus | 1420 °C | 2590 °F |
| Component Elements Properties | Metric | English |
| Carbon, C | <= 0.15 % | <= 0.15 % |
| Chromium, Cr | 18% | 18% |
| Iron, Fe | 69% | 69% |
| Manganese, Mn | <= 2.0 % | <= 2.0 % |
| Molybdenum, Mo | <= 0.60 % | <= 0.60 % |
| Nickel, Ni | 9.00% | 9.00% |
| Phosphorus, P | <= 0.20 % | <= 0.20 % |
| Silicon, Si | <= 1.0 % | <= 1.0 % |
| Sulfur, S | >= 0.15 % | >= 0.15 % |
