Super Duplex SS F53 S32750 vs F55 S32760

Question

Super Duplex SS F53 S32750 vs F55 S32760

georgacus (Mechanical)

(OP)

3 Mar 17 10:46

What is the difference between these two grades, if any? And what could be the reason for picking one over the other?

As far as I could see, F55 has tungsten in its chemical composition.

metengr (Materials) · Answer 1 · 2017-03-03 12:59:53

You might want to take a closer look between the two grades;
http://pmfirst.com/materials/super-duplex/

EdStainless (Materials) · Answer 2 · 2017-03-03 13:53:17

They are two different ways of trying to reach the same level of corrosion resistance.
There are a lot of papers on the heat treating and corrosion testing of these alloys.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube

JamesCKelly (Materials) · Answer 3 · 2017-04-25 22:11:56

I think people tend to use them interchangeably, based on what is most available.

If it is a new, and critical, application I personally would have greater faith in the validity of the Swedish-generated corrosion data for S32750.

Come Join Us!

Posting Guidelines

Related Projects

Jobs

Super Duplex SS F53 S32750 vs F55 S32760