Zimaloy Co-Cr-Mo alloy

[fileblade]

I have a hip implant of Zimaloy a proprietary Co-Cr-Mo alloy, possibly die cast. Has anyone tried to forge this stuff? I would like to forge a knife if it will move under the hammer. Thanks for any info you may have![/FONT]

 

[hardheart]

it's a cobalt based alloy with ~25-30% chromium, I don't think anyone is gonna be forging that

 

[mete]

Use a bigger hammer !! HA!, HA!

 

[knarfeng]

From your other thread on Zimaloy:

Question from a newby, has anyone worked with Talonite or other Co-Cr-Mo alloy? Can this stuff be forged? I understand it is very hard with Rockwell over 100!

You are looking a different hardness scale.

There are several Rockwell scales. Alloys of interest to knife folks are measured on the Rockwell "C" scale.

The reference I found to Zimaloy listed the Rockwell hardness as "80-100 R" That would be the R scale used for plastics and has no translation to "C" scale values. I would hazard a guess that Zimaloy actually equates to less than 20 Rockwell C hardness. This is a good hardness for structural (bio-implant) applications, but would be far too soft for a blade.