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what is so special about 660SS (stainless steel) bolting?

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sparkvalve

Petroleum
May 11, 2011
1
does anyone know what is so special about 660SS bolting instead of other type of bolting?
 
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It's austenitic and precipitation hardened, so it's strength at room temp is more in line with what you would find in a ferritic or martensitic fastener, but it performs much better then them at high temperature.
It also got great oxidation and corrosion resistance.

I don't know if all that makes it special though.
 
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