Disk Springs in a marine environment

[Ibreakstuffdigitally]

Hello. We need to select replacement high strength disk springs that will survive in a marine environment. Periodic immersion will be an issue, and, to make things more complicated, we have learned that a nearby turbine exhaust emits sulphur compounds, which also appear to be problematic.

Can anyone suggest any alloys that might be worth looking into? We know from experience that 17-7 will not be suitable. It requires a hard temper to function as a spring, and this makes it vulnerable to SCC, and, as we have learned, to sulphur as well.

Any suggestions for good places to start looking for more info? I know some Inconel products are reasonably available, but have no experience with them.

Thanks in advance for any help.

 

[EdStainless]

I would suggest that you look at Ni based alloys. They are expensive but you can reach very high strengths and they will have excellent corrosion resistant. Alloys such as 725, or a "C" type (276, 22, 686, 59). Stay away from alloys like 718, they are not as corrosion resistant when they are aged.

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Plymouth Tube

 

[strider6]

Have a look at this article:

High Strength, Corrosion-Resistant Superalloy
Fasteners, Springs, and Hardware for Marine Service

http://www.specialmetals.com/docume...t Superalloy Fasteners Springs & Hardware.pdf

hoep this help

S.

Corrosion Prevention & Corrosion Control