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-----Can 18-8 grade hardware be replaced equally by 316 type mil-std hardware? What would that mil-std be?
Transition of commercial grade hardware to mil-std hardware in all our applications.
Doug Wilsonaircraft equipment - Huntington Beach, California
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18/8 is the 'basic' austenitic stainless steel.
'316' is virtually the same, but with approx. 2 to 3% Molybdenum added for improved pitting resistance, with no other major differences.
Strength, formability, available product types etc essentially the same, and therefore 316 could be considered a replacement for 18/8.
I can't help with 'foreign' mil specs though.
Best Regards
- Plymouth, Devon, UK
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Doug, we could use some more information. There are a number of material specifications for 316, in the ASTM, AMS, J, and even some remaining in the Federal and Military specification systems. But something like FF-S-86 for socket head cap screws won't help much if you want sheet.
Lee Gearhart
metallurgist - E. Aurora, New York
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