304V stainless steel has more uniform chemistry. The carbon content is established for high tensile strength. The material is originally melted with an electric arc furnace then, to improve homogeneity and reduce inclusions, the ingot is remelted in a vacuum furnace.
Chemical composition
| Composition |
ASTM A313 |
| Carbon | 0.08 max |
| Manganese | 2.00 max |
| Phosphorus | 0.045 max |
| Sulfur | 0.030 max |
| Silicon | 1.00 max |
| Chromium | 18.0 - 20.0 |
| Nickel | 8.0 - 10.5 |
| Nitrogen | 0.10 max |
| Iron | Balance |
Physical properties
| Metric |
English |
|
|
Density |
7.92 g/cm³ | 0.286 lbs/in³ |
|
Modulus of elasticity |
196 GPa | 28 Mpsi |
|
Electrical resistivity |
720 µohms*mm | 28.4 µohms*in |
|
Thermal conductivity |
16.3 2W/(m*°C) | 113 BTU*in/(hr*ft²*°F) |
|
Coefficient of thermal expansion |
17.2 µm/(m*°C) |
9.5 µin/(in*°F) |
*Values calculated at 22 °C [72 °F]
Mechanical properties
|
Cold worked % |
Yield strength |
Ultimate tensile |
Elongation % |
| 0 | 345 MPa [50 ksi] | 738 MPa [107 ksi] | 41 |
| 20 | 483 MPa [70 ksi] | 965 MPa [140 ksi] | 14 |
| 37 | 621 MPa [90 ksi] | 1269 MPa [184 ksi] | 4.0 |
| 50 | 965 MPa [140 ksi] | 1434 MPa [208 ksi] | 3.0 |
| 60 | 1103 MPa [160 ksi] | 1579 MPa [229 ksi] | 2.6 |
| 68 | 1241 MPa [180 ksi] | 1703 MPa [247 ksi] | 2.7 |
| 75 | 1379 MPa [800 ksi] | 1827 MPa [265 ksi] | 2.6 |
| 80 | 1482 MPa [215 ksi] | 1875 MPa [272 ksi] | 2.9 |
| 84 | 1586 MPa [230 ksi] | 1993 MPa [289 ksi] | 2.5 |
| 90 | 1689 MPa [245 ksi] | 2110 MPa [306 ksi] | 2.6 |
| 93 | 1724 MPa [250 ksi] | 2179 MPa [316 ksi] | 2.7 |
| 95 | 1931 Mpa [280 ksi] | 2303 MPa [334 ksi] | 2.6 |
|
*All data represent results from 25.4 cm [10 in] test gauge length. |
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