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topic 11123

Platinum Machining


I am trying to locate information on turning (lathe) small parts from Platinum 90% Iridium 10%. The parts will be .3125" in diameter and be approx. .050" thick. Initial plans are to attempt this with round bar stock.

Helpful information would be:

Tool Materials
Cutting Fluids
Machining Speed & Feeds
Heat Treating, annealling or stress relieving
Post Machining Chemical Treatments

Frank S [last name deleted for privacy by Editor]
- Huntingdon Valley, Pennsylvania, USA


Hello Frank,

Any luck finding answers to your question? We have an almost identical need with smaller diameter, turning parts below .09" diameter from Pt/Ir 90/10 just over .3" long, no luck searching web yet.


Jim Hill
Machine Shop - San Jose, California, USA


Hello - I'm a jeweler, and was searching for some clues to this very question from another place. Found these questions, and I thought I'd help you out. I Googled for platinum lathe with no quotes, BTW - found a couple of things, but this: is the most complete.

Johnson Matthey is one of the major platinum suppliers..... Found this thread, too, and thought I'd come back and post the link for you guys...

John Donivan
- San Francisco, California

Ed. note: thanks, John.

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