passivation of PH13-8MO
passivation of PH13-8MO
(OP)
should passivation be done over the whole part prior to shot peen (mil-s-13165) which covers part of it ?
thanks.
thanks.
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RE: passivation of PH13-8MO
I believe that AMS 2700 is the passivation spec for stainless steels.
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P.E. Metallurgy, Plymouth Tube
RE: passivation of PH13-8MO
comments?
thanks.
RE: passivation of PH13-8MO
It is a surface modification, I would passivate afterwards.
Ignore this at your own risk, I wouldn't want my customer to complain about rusty parts.
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P.E. Metallurgy, Plymouth Tube
RE: passivation of PH13-8MO
Shot-peening passivated surfaces will wipe-out the effects of the passivation for multiple reasons [causes].
Also, AMS2700 includes method 2 passivation, using citric acid. Unless not allowed for a specific alloy, this is a 'green' preferable process... other acids are downright dangerous and difficult to contain.
Regards, Wil Taylor
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RE: passivation of PH13-8MO
thanks.
RE: passivation of PH13-8MO
You still need to clean after peen before surface coating.
Ctiric acid isn't my favorite, it must be warm and it takes a while.
A short dip in room temp Nitirc is easy, fast, and reliable.
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P.E. Metallurgy, Plymouth Tube
RE: passivation of PH13-8MO
Michael McGuire
RE: passivation of PH13-8MO
Can I reach you via Plymouth Tube?
Mike McGuire
Michael McGuire
RE: passivation of PH13-8MO
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P.E. Metallurgy, Plymouth Tube