I'm looking for a supplier of small screws (probably custom machined) that can remain non magnetic in high fields 5-10 tesla or more. My original material was colsibro but I believe there are other materials that can be used.
Additional Details
15 minutes ago
Sorry, I should have added that need to be conductive and ultra high vacuum compatible (no brass...contains zinc) and relaively high load (no aluminum and I'm looking for metric M1.6 x ~5mm
2006-08-17 06:05:03 · 8 answers · asked by Taoman 2 in Science & Mathematics ➔ Physics
Some stainless steel alloys can't be magnetized. You can also get screws made of nylon and other plastics, but I don't know if that's strong enough for your application. Would pure copper work?
2006-08-17 06:12:44 · answer #1 · answered by pvreditor 7 · 0⤊ 0⤋
I like Dr. M's answer.
Apparently, the usual high strength titanium alloy Ti 6Al 4V is good in a medical MRI system which uses high magnetic fields.
The electrical conductivity of BeCu should be quite high too.
Another possibility is Beryllium Copper. The amount of beryllium is very small, and the strength is much higher than a hard machine shop copper. I know its mag suscept. is very low, but I'm not sure which is lower, the above Ti ally or the BeCu alloy.
Also, I'd guess that the strength of the Ti alloy is considerably greater depending on heat treatment.
2006-08-17 07:23:05 · answer #2 · answered by Tom H 4 · 0⤊ 0⤋
You need screws made of 300 series stainless steel. Stainless steel screws are readily availble, but make sure it's 300 series. 400 series alloys are stronger but slightly magnetic. If you have to have something machined, go with SS304. It is the most machinable SS alloy, and is perfectly suitable for UHV systems. UHV copper del-seal flanges by MDC, for example, are 304.
2006-08-17 06:32:55 · answer #3 · answered by Dr. R 7 · 0⤊ 0⤋
Damn!!!
You might look at anti-magnetic stainless. Aside from that, it's gonna have to be machined out of some unobtainium rod stock
If you don't mind my asking, what kind of gizmo are you building?
Doug
2006-08-17 06:25:45 · answer #4 · answered by doug_donaghue 7 · 0⤊ 0⤋
Any company that has aluminium or maybe some stainless screws. what's the projected load? would teflon screws artwork? If it relatively is purely conceal panels, teflon screws ...or maybe re-usable rivets would be the value ticket!
2016-10-02 05:04:07 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Use tittanium
2006-08-17 06:55:00 · answer #6 · answered by Dr M 5 · 0⤊ 0⤋
Yeah....I'd go with stainless.
2006-08-17 06:15:48 · answer #7 · answered by Anonymous · 0⤊ 0⤋
try aluminum
2006-08-17 06:12:31 · answer #8 · answered by wolf 5 · 0⤊ 0⤋