Stamping Platinum Strip

[NickE]

Yep, even more expensive than Elgiloy....

My tool shop got a RFQ for some small parts of 0.002" platinum, .75"x0.63".

Any hints?

(IE, where to get material. Behaviour in stamping, rolling conditions, etc...)


Nick
I love materials science!

 

[swall]

Maybe you SHOULD talk to Elgiloy. Terry Bartel is very knowledgable on specialty metals, even the ones Elgiloy doesn't sell.Went to MTU, by the way.

 

[jedward]

goodfellow.com supplies many metals in thin stock including platinum and will cut to size

morgan advanced ceramics

http://www.wesgo.com/

Morgan Advanced Ceramics Inc, Wesgo Metals 2425 Whipple Road, Hayward, CA 9444 USA

 

[CoryPad]

According to ASM Handbook Volume 14, Forming and Forging:

Cold Working. Platinum responds readily to cold working and can be reduced 98% or more by rolling or wiredrawing. The rate of work hardening is slow...

In cold rolling, the response of platinum is similar to that of copper, and similar rolling programs are followed. It is seldom desirable to interpose annealing stages.

The usual press operations of blanking, piercing, bending, and deep drawing are used to form platinum, palladium, and their commercial alloys through the use of techniques and tools that are similar in all respects to those for cartridge brass or silver.

Regards,

Cory

Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.

 

[unclesyd]

Where we punched Pt we had to use the absolute minimum clearence dies available. We did stamp a few items, but I remember there was a lubricant sticking problem. If a part had a flange on it we tried to roll form the flange.

We purchased all our Platinum to manufacture spinnerretts/jets from Englehard (Now Basf) and Johnson Matthey. This was for two reasons was an assured supply and the ability to recycle the Pt.

We manufactured several size spinnerettes, from 1"-10" diameter with the number of holes varying from 1-18,000 round, 0.001"-0.009", and shaped holes. In various stages of manufacture we punched, coined, rolled formed, and drilled Pt with no problems. Any drilling or machining of Pt required very sharp tools.

Englehard had a very good booklet on the formability of Pt by different means. I would think that Basf would have the same or something similar.

http://www.matthey.com/

http://www.catalysts.basf.com/Main/materials_services

Machining Platinum.

http://www.platinummetalsreview.com/pdf/pmr-v22-i1-002-012.pdf

http://www.pgi-platinum-tech.com/pdf/V12N1.pdf

PS:
Don't throw away any scrap as it is worth almost as much as the base metal. A very little piece is worth a lot.

 

[EdStainless]

I would suggest Engelhard and Johnson Matthey as possible sources.
The metal is soft, think of high purity Cu or Ag. It may be a real bear to stamp, though forming is a piece of cake.

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