T700 Cannulated Screw System

with BioDur® 108 Option.

High strength stainless steel that minimizes nickel exposure.



The Renovis 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

 

Learn more about the T700 Cannulated Screw System.


BioDur is a registered trademark of CRS Holdings, Inc.

  1. Hallab N, Merritt K, Jacobs J. Metal Sensitivity in Patients with Orthopaedic Implants. JBJS. 2001;83(3):428-428.
  2. BioDur® 108 Alloy Material Data Sheet. Carpenter Technologies.
  3. 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.