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Up Topic Welding Industry / Metallurgy / The many faces of stainless steel
- - By ssbn727 (*****) Date 03-19-2014 21:00
"Stainless steel comes in various forms—austenitic, martensitic, and ferritic. Which type you use depends on your application requirements."

Although PH stainless steels aren't addressed in this article, there is some interesting experiences from the author regarding Duplex SS... And as I have previously stated - these articles are written mainly for the novice... So enjoy the read.:wink::cool:

Parent - By kcd616 (***) Date 03-20-2014 17:20
thank you Henry
and for crying out loud
stop making everyone else look bad
your too smart:wink::lol::eek::cool:
Parent - By js55 (*****) Date 03-21-2014 12:31 Edited 03-21-2014 12:34
Good stuff Henry though I would add that duplex has been around quite awhile. If memory serves, there was a german patent developed as early as 1929. Also if memory serves, they just didn't know quite what to do with it.
The SS filler ER312 is essentially a duplex alloy, though we don't call it that, we call it a high ferrite SS useful for applications where cracking is problematic. And its been around a long time. By todays measuring system of FN, measuring ferrite has proven tricky and controversial, it can demonstrate an FN of as much as 30. 30FN by anybody's assessment is duplex.
Up Topic Welding Industry / Metallurgy / The many faces of stainless steel

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