with BioDur 108 Option.
High strength stainless steel that minimizes nickel exposure.
The T700 Cannulated Screw system includes the two material options: titanium alloy and BioDur®† 108 stainless steel.
BioDur 108 is a stainless steel alloy developed for medical applications requiring high strength and corrosion resistance. The material is produced using the Electro-Slag Remelting process, which ensures the necessary micro-structure to achieve improved properties compared to other stainless steels. BioDur 108 also addresses the problem of nickel sensitivity [1], containing a significantly reduced level compared to other commonly used stainless steels.[2,3]
| Elements in BioDur 108 and other commonly used medical grade stainless steels. Maximum Percent Weight.[2] |
||||
|---|---|---|---|---|
| Element | BioDur 108 | BioDur 316LS | BioDur 22-13-5 | BioDur 734 |
| C | 0.8% | 0.03% | 0.03% | 0.08% |
| Mn | 21-24% | 2% | 4 – 6% | 2 – 4.75% |
| Si | 0.75% | 0.75% | 1% | 0.75% |
| P | 0.03% | 0.025% | 0.04% | 0.025% |
| S | 0.01% | 0.01% | 0.03% | 0.01% |
| Cr | 19-23% | 17 – 19% | 20.5 – 23.5% | 19.5 – 22% |
| Ni | 0.05% | 13 – 15.5% | 11.5 – 13.5% | 9 – 11% |
| Mo | 0.5 – 1.5% | 2.25 – 3.5% | 1.5 – 3% | 2 -3% |
| Cu | 0.25% | 0.5% | — | 0.25% |
| N | > 0.9% | 0.1% | 0.2 -0.4% | 0.25 – 0.5% |
| Nb | — | — | 0.1 -0.3% | 0.25 – 0.7% |
| V | — | — | 0.1 – 0.3% | — |
| Fe | Balance | Balance | Balance | Balance |
†BioDur is a registered trademark of CRS Holdings, Inc.
- Hallab N, Merritt K, Jacobs J. Metal Sensitivity in Patients with Orthopaedic Implants. JBJS. 2001;83(3):428-428.
- BioDur® 108 Alloy Material Data Sheet. Carpenter Technologies.
- Walter MJ. Stainless Steel for Medical: The high level of nitrogen in BioDur 108 stainless steel provides anhanced mechanical and physical properties for medical implants. Advanced Mateirals & Processes. April 2006.