unclesyd, I have also a 18-8 stainless steel spoon in my salt shaker, and it's been working fine for years, without signs of corrosion... Oh God!. Corrosion is a too much big mistery for me! [sadeyes]
I just want something which helps me to find the right disc spring.
Anyway,
thanks to all...
NickelMet,
you mean that for a disc spring working under stress cycles, and chlorides, your distributor prefers 17-7PH with CH900, don't you?
I think that the right solution means a reasonable cost, but no failure in a short time. I mean that I don't want a lifetime-disc-spring like the one...
Hello to everybody,
we have done some microstructure analisys using an electronic microscope, and there was a nice trace of Chlorides on the cracked surface.We also found carbides. So we think that the heat treatment wasn't also good.
I think that from now on we'll use 304csp. I am sure...
I had disc-springs made of "equivalent" material to 17-7 PH called 1.4568 (european standard).
They are now completely broken and I don't know why. The machine has been out of use for two years near the sea... till they were going to use it.
The springs were loaded, but no vibration and no...
Personally, I suggest Peek for low pressure and high temperature to achieve a good sealing. Peek behaves then in a "smooth" way. That is what I have always heard.
Thanks to everybody. I was using several guides, such us the Green Tweed one, eFunda, and another one from NIBCO. These were for me the most useful, before.
G.Tweed:http://ww2.gtweed.com/chemicalcompatibility.nsf/
NIBCO: "nibco chemical resistance for valves and fittings"
zztop
Please, does anybody know about a serious, tested, large, data list about compatibility guide between fluids and elastomeric or sealing materials? (ptfe, fluorocarbon,...)
At the moment I use three or four lists and I compare between them. At the end, they never show the same results, so I...
