Titanium Grade 23 or TI 6AL-4V for Biocompatibility

Q: I’m working on a medical prototype that requires a strong bolt that is biocompatible. I know I want titanium but not sure which grade is adequate for medical use.

A: Typically medical grade titanium screws are produced from grade 23 or TI 6AL-4V ELI or grade 5 6AL4V. A titanium screw made from these grades are not only non-toxic and biocompatible but they also have a special trait called osseointegration where the body’s natural bone and tissue actually bond to it. Not only are they lightweight and super strong but have the flexibility and elasticity similar to human bone.

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