SS Springs

[Robertmet]

I was asked about corrosion resistant springs for a boat trailer used on the Texas coast.These trailers are backed into the water to launch and have to be replaced in a few years .Is there a SS that would do better ? I did some jobs years ago, 1970s, on Padre Island and there you didn't have to dunk things into water the high moisture/salt/temperature did a great job on everything !Retired now I'm somewhat out of the loop .Anything available in newer SS ?

 

[CoryPad]

Yes, Springflex by Sandvik. It is a 22 % Cr alloy with a PRE of 35 so that it has substantial resistance to chloride environments.

http://www.smt.sandvik.com/

Regards,

Cory

Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.

 

[EdStainless]

I would think that 2205 might be an option. The high strength would be nice also. I would have to think about fatigue limit, I am not sure off of the top of my head.

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Plymouth Tube

 

[metengr]

More information on 2205

http://www.alleghenyludlum.com/ludlum/pages/products/xq/asp/P.97/qx/product.html#

 

[mcguire]

The 2205 would work fine since it has a PREN of 35. That's enough to resist corrosion when immersed in sea water. However 2003 with a PREN of 30 would be cheaper and good enough.

Michael McGuire

http://stainlesssteelforengineers.blogspot.com/