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440C Stainless Steel

440C Stainless Steel

440C Stainless Steel

(OP)
Does anyone know if there is a benefit to passivating 440c? Carbide tools are used for all machining operations.

RE: 440C Stainless Steel

It all depend on its' application, many stainless alloys will form a passive chromium oxide layer just being exposed to air after a few days to weeks.  What will the 440C be exposed to?

If you used Carbide tools I would at least pickle the 440c to remove any contaminates on the surface.  

When I hacve a chance I'll pull my ASM handbooks and let you know what they say.

RE: 440C Stainless Steel

MIL-T-5624(Fuel), JP-4 and JP-5. Pickle in what type of solution?

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