Biodur® 108 is an essentially nickel-free austenitic stainless steel with many of the same properties of other stainless steels, such as the high corrosion resistance of 316LVM stainless steel, and the strength similar to spring temper 304 stainless steel.
Chemical composition
| Composition |
ASTM F2229 |
| Carbon | 0.08 max |
| Phosphorus | 0.03 max |
| Silicon | 0.75 max |
| Nickel | 0.05 max |
| Copper | 0.25 max |
| Iron | Balance |
| Manganese | 21.00 - 24.00 |
| Sulfur | 0.01 max |
| Chromium | 19.00 - 23.00 |
| Molybdenum | 0.50 - 1.50 |
| Nitrogen | 0.85 - 1.10 |
| Cobalt | <0.10 |
Physical properties
| Metric |
English |
|
|
Density |
7.65 g/cm³ | 0.276 lbs/in³ |
|
Modulus of elasticity |
200 GPa | 29.0 Mpsi |
|
*Values calculated at 22 °C [72 °F] |
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Mechanical properties
|
Cold work |
Yield strength |
Ultimate tensile |
Elongation % |
| 0 | 855 MPa [124 ksi] |
1138 MPa [165 ksi] |
35.4 |
| 21 | 1213 MPa [176 ksi] |
1482 MPa [215 ksi] |
8.4 |
| 38 | 1558 MPa [226 ksi] | 1841 MPa [267 ksi] | 4.3 |
| 51 |
1786 MPa [259 ksi] |
2055 MPa [298 ksi] | 3.8 |
| 60 | 1848 MPa [268 ksi] |
2193 MPa [318 ksi] |
3.8 |
| 70 | 1951 MPa [283 ksi] |
2275 MPa [330 ksi] |
3.5 |
| 80 | 2020 MPa [293 ksi] |
2344 MPa [340 ksi] |
3.5 |
| 90 |
2117 Mpa [307 ksi] |
2441 MPa [354 ksi] | 3.5 |
| *All data represent results from 25.4 cm [10 in] test gauge length using side action pneumatic grips. | |||