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AR15.COM
4/28/2016 7:37:25 PM EDT
Need a material with a similar Young's modulus and density to 304 stainless but with negligible electrical conductivity.

Any suggestions?
4/28/2016 7:47:45 PM EDT
[#1]
transparent aluminum is almost there, but is softer.
4/28/2016 7:51:11 PM EDT
[#2]
Havarti cheese melted down and reinforced with pubic hair clippings from tribal Aborigines.
4/28/2016 8:07:22 PM EDT
[#3]
Unobtanium?
4/28/2016 8:10:56 PM EDT
[#4]
Chow hall mashed potatoes should do it.
4/28/2016 8:14:09 PM EDT
[#5]

Quoted:


Need a material with a similar Young's modulus and density to 304 stainless but with negligible electrical conductivity.



Any suggestions?
View Quote




 
4/28/2016 8:20:58 PM EDT
[#6]
How many volts are you trying to stop?
4/28/2016 8:24:32 PM EDT
[#7]
Quote History
Quoted:
How many volts are you trying to stop?
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Trying to prevent mains coupling more than anything.

Not more than a volt or so but it's being amplified by a gain of 1000.
4/28/2016 9:11:44 PM EDT
[#8]
MatWeb

Knock yourself out.
4/28/2016 9:48:32 PM EDT
[#9]

Quote History
Quoted:


MatWeb



Knock yourself out.
View Quote
Ahh matweb. Add in the machinist handbook, the Guhring drill/tap/speed feed/metric/inch conversion flippy chart thing, the HSM app on my phone and various design specific handbooks and you have the references that I use on pretty much a daily basis. Ya know just for the stuff I don't have memorized.

 



Depends how close you want the modulus to be. Steel is the only thing that's gonna be "close".  G10 was the next thing that came to mind. Probably about half as dense as 304 but non conductive.  Probably closer to 6061 in density.  High density and non conductive with a youngs similar to steel is a trick. Ceramics?
4/28/2016 9:51:51 PM EDT
[#10]
What about Garolite?  Even the paper-based is rigid but not as tough as steel. I frequently use the cheap paper based type but I think they now make linen based and other types from more exotic and heat resistant materials.  Delrin will not work.  Delrin is being used as a fuel now.  Mcmaster-Carr sells all sizes and types of Garolite.
4/28/2016 9:53:31 PM EDT
[#11]
Vespel?
4/28/2016 9:55:19 PM EDT
[#12]
Something denser and stronger could work too. I was looking at a particular tungsten carbide with a resistance of 1000ohm/cm but I doubt I'll be able to machine it.

Anywhere from 150gpa to 400 is probably ok.
4/28/2016 10:00:28 PM EDT
[#13]
Quote History
Quoted:
Something denser and stronger could work too. I was looking at a particular tungsten carbide with a resistance of 1000ohm/cm but I doubt I'll be able to machine it.

Anywhere from 150gpa to 400 is probably ok.
View Quote

I have no idea what the fuck all that engineer babble is. Can you grind the carbide or use Wire EDM? Can carbide be cut with a water jet, or a plasma cutter?

Carbide dust isn't a good thing to be breathing... Beware.
4/28/2016 10:01:40 PM EDT
[#14]
MRE crackers always worked for the application mentioned
4/28/2016 10:06:33 PM EDT
[#15]
Carbon fiber reinforced hybrid SiC matrix composite?
4/28/2016 10:38:43 PM EDT
[#16]

Quote History
Quoted:





I have no idea what the fuck all that engineer babble is. Can you grind the carbide or use Wire EDM? Can carbide be cut with a water jet, or a plasma cutter?



Carbide dust isn't a good thing to be breathing... Beware.
View Quote View All Quotes
View All Quotes
Quote History
Quoted:



Quoted:

Something denser and stronger could work too. I was looking at a particular tungsten carbide with a resistance of 1000ohm/cm but I doubt I'll be able to machine it.



Anywhere from 150gpa to 400 is probably ok.


I have no idea what the fuck all that engineer babble is. Can you grind the carbide or use Wire EDM? Can carbide be cut with a water jet, or a plasma cutter?



Carbide dust isn't a good thing to be breathing... Beware.
Diamond grind yes, sinker and wire edm yes. Water jet...maybe. plasma...it might cut it but I bet it burns all the binder out of it and the finished product would be junk.