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Model No: Biodur 108
ASTM F2229 / UNS S29108 / Biodur 108 (X4CrNiMoN23-21-1) Medical Alloy
Biodur 108 (X4CrNiMoN23-21-1) is a nickel-free austenitic stainless steel which exhibits good toughness and mechanical properties, fatigue properties and corrosion resistance superior to those of Stainless Steel 316L.
Delivery :
FOB
minimum order :
100 kilograms
Supply Ability :
5000Tonkilograms / Month
Stock Time :
7-10Day
Country of Origin :
CHINA
Quantity :
Biodur 108 (X4CrNiMoN23-21-1) is a nickel-free austenitic stainless steel which exhibits good toughness and mechanical properties, fatigue properties and corrosion resistance superior to those of Stainless Steel 316L.
Substituting the Nickel content for Manganese allows it to maintain its fully austenitic microstructure in all conditions, the Pressure-ESR remelting process ensures a fine and clean microstructure. UNS S29108 is free of all delta-ferrite and is non-magnetic, satisfying the requirements for ASTM F2229.
Chemical composition
| Composition | ASTM F2229 UNS S29108 % |
| 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] | ||
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. | |||
Applications
- Bone surgery implants
- Joint replacement prostheses and implants
- Medical, surgical and dental instruments
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