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How can i get the metal-foil that made by superclean stainless steel?Helpful Member!(4) 

MicSeven (Materials) (OP)
16 Jul 04 1:38
I need the superclean metal-foil for the research.
the ideal meterial is 316L stainless steel, double vacuum treatment, like vim/var.
i know the material hase widly used in the semiconductor equipment industry, but i can't get the foil type sample that made by 316L VIM/VAR.
the thickness i need is about 50~100 micro meter.
the size is not matter right now
Where i can get the metal-foil samples in the world? i do not want the metal-foil made by tranditional 316L material.
Helpful Member!  unclesyd (Materials)
16 Jul 04 9:10
Here are three websites of companies that I have used that supply foils.  I would contact them for specific information as to the purity.  One thing about foils is the thinner you go the cleaner the base metals has to be.   
I would also do a search on Thomas Registry or GlobalSpec

http://www.espimetals.com/metals/catstainlesssteel.htm

http://www.hpmetals.com/index.htm

http://www.allfoils.com/products_stainless.html
IRstuff (Aerospace)
16 Jul 04 10:50
What measure are you using to define "clean?"

We used standard 316 for process plumbing in a semi fab at a previous job.  The facilities guys used LOX to clean the piping before installation.

TTFN

Helpful Member!(2)  mcguire (Materials)
16 Jul 04 13:42
VIM/VAR for 316L doesn't get you very much except low nitrogen and low hydrogen. The usual ingredients of inclusions are oxides and sulfide. An AOD can get sulfur to under 10 ppm, so again no benefit from VIM/VAR.
 The major culprit, oxygen, generally runs as much as 100 ppm in 316L if it is Si/Mn deoxidized, whether it's VIM/VAR or AOD. If it's aluminum deoxodized, then again the AOD works equally well.
 So a well-made AOD 316L can be cleaner, i.e. lower in oxides, than a VIM/VAR version. That being said Avesta specializes in such versions of 316L.
MicSeven (Materials) (OP)
18 Jul 04 23:29
Meanging of the superclean stainless steel are chemistries for 316L, carbon<0.02%, Mn<0.3%, P<0.04%, S<0.003%, Si<0.5, according to the SEMI SPEC. F-19.

The material via AOD or VOD is usually acceptable for relatively non-conrrosive service. System desingers will often speicfy a "double melt" or  "double vacuum melt" for corrosive service applications.

I need the superclean 316L to avoid inclusion in the 316L, espacially in metal-foil type. Because the metal-foil will be used in the precisely area applications and need suffer from critical manufacturing process.

so how can i get the samples for the research and study?

I meansion again about the sepec. of the 316L metal-Foil samples.
the thickness i need is about 50~100 um.
the size is about 170mm width.
mcguire (Materials)
19 Jul 04 11:26
Go to a re-roller, such as Ulbrich, and give them the spec and let them source the steel which they can then re-roll to gauge.
Helpful Member!  TVP (Materials)
19 Jul 04 12:48
I agree with mcguire, discuss this further with Ulbrich .

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