316SS replacement for high temp salt spray
316SS replacement for high temp salt spray
(OP)
I have an oilfield application with 316SS & 17-4Ph H1150D components. Our customer has cited corrosion & pitting problems with 316SS in the high temp (300F - 500F) salt spray environment and requires a material change.
The 316SS components are 1" AutoClave Medium Pressure (20K) fittings (coned & threaded nipple, gland nut, collar) and a 1/4" medium pressure angle valve with nipples, gland nuts, and collars. These components are connected to the 17-4Ph body.
We are looking at changing the 1" & 1/4" nipples to either 725, 2205, or 2507. Based on the AutoClave Material vs Pressure & Pressure vs Temperature charts HC-276 is the closest replacement for the fitting parts & the 1/4" angle valve.
Does anyone have any other material recommendations?
Should I be concerned about gall potential between any of the components/materials I mentioned?
Thanks for your assistance.
Louis
The 316SS components are 1" AutoClave Medium Pressure (20K) fittings (coned & threaded nipple, gland nut, collar) and a 1/4" medium pressure angle valve with nipples, gland nuts, and collars. These components are connected to the 17-4Ph body.
We are looking at changing the 1" & 1/4" nipples to either 725, 2205, or 2507. Based on the AutoClave Material vs Pressure & Pressure vs Temperature charts HC-276 is the closest replacement for the fitting parts & the 1/4" angle valve.
Does anyone have any other material recommendations?
Should I be concerned about gall potential between any of the components/materials I mentioned?
Thanks for your assistance.
Louis





RE: 316SS replacement for high temp salt spray
RE: 316SS replacement for high temp salt spray
RE: 316SS replacement for high temp salt spray
Research continuing....
RE: 316SS replacement for high temp salt spray
RE: 316SS replacement for high temp salt spray
I am not sure how the temperature range would affect the corrosion resistance. You could probably get some info on that from the Nickel development institute (ww.nidi.org).
Electralloy has all kinds of info on this alloy
http://www.electralloy.com/Nit_50.PDF
RE: 316SS replacement for high temp salt spray
RE: 316SS replacement for high temp salt spray
Sandvik still recommends against 2205 & 2507 as this temperature is above the critical pitting temperature of 175F.
Still evaluating options....
Louis
RE: 316SS replacement for high temp salt spray
RE: 316SS replacement for high temp salt spray
RE: 316SS replacement for high temp salt spray
RE: 316SS replacement for high temp salt spray