Feeler for new SSI's

[911TES]

The other critical step is the surface passivation which can greatly affect the corrosion resistance.
Bill

[Flieger]

Well, stainless steel is supposed to be self-passivating. The chromium oxide coating is much like aluminum oxide- hard and non-porous enough to protect the metal below from further oxidation. It is thin enough that it is clear so you see the shiny metal below.

[carrera79]

Flieger, you're absolutely right about martensitic and austenitic stainless !

My words about the stainless chinese quality was about some troubles I got some years ago : I'm making stainless steel parts for nuclear (in metal spinning) and bought one day some sheet supposed to be 304L to a french supplier (with a chinese certificate of analysis which says it was 304L)
We try to make the parts, but more than 60% broke during process !
I just took the certificate, and sent it to my customer technical service also with some metal.
After 2 weeks, they said the certificate was false, and the metal was not 304L, not enough Nickel !!!!

And after we spun the stainless, it become usually magnetic as you said !

PAssivating is very useful if you weld the metal

fred ©

Example of aluminum



Example of Stainless

[Cliff]

[QUOTE=QWKENF-911;687526]John Daniels SSI's: made in USA
Dansk SSI's: made in China
The only thing I want made in China is Chow-Mein with no bean-sprouts[/QUOTE
I was under the impression that all tooling was sent to Europe for manufacturing of the SSI heat exchangers? Perhaps the older Dansk `ssi``s were manufactured in China and not the new all stainless steel items we are all expecting from Europe…..Cliff

[mohrgan]

For $1700.00 they should be made in Europe.

[carrera79]

they effectively should !!!
but I think they're not

[sithot]

Don't know Daniels, are they still produced, or did he sell out to Dansk?

John is a good guy. No BS out of him. He tells it like it is. I wish him well in his retirement.

Dansk owns the line/tools/company name etc..

As for prices, what did you expect? There is NOW no competition.

Grab your ankles.

Tom