coating for springs
coating for springs
(OP)
Hi
I need to specify a coating for a helical spring to help prevent corrosion to temperatures up to about 300C.
Any help based on experience would be greatly appreciated.
Thanks
allan
I need to specify a coating for a helical spring to help prevent corrosion to temperatures up to about 300C.
Any help based on experience would be greatly appreciated.
Thanks
allan





RE: coating for springs
RE: coating for springs
http://www.webspawner.com/users/israelkk/
RE: coating for springs
Thanks for your responses.
The spring is part of a pressure relief valve in a compressor, therefore it will be exposed to elevated temperatures for very short periods of time and rarely. Perhaps 300C is a bit extreme, that's the compressor exit temperature based on adiabatic compression.
Doing the sums based on BSEN13906-1 suggests steel type SM from BSEN10270-1, UTS 1430 N/mm^2.
Thanks again
allan
RE: coating for springs
I'd reccommend using something that can survive the peak temp you identified previously. I do know that the literature says 17-7PHCH900 can be used up to 315C...
17-7 is also a good alloy for springs in general. (IMHO)
RE: coating for springs
Typically Carbon Steel Springs are rated to 450F (232C) when installed in a Closed Bonnet design SRV.
SS Springs can go up to 800F (426C).
J. Alton Cox
www.delucatest.com