Google Groups no longer supports new Usenet posts or subscriptions. Historical content remains viewable.
Dismiss

Case harden 316l?

44 views
Skip to first unread message

Peter Fairbrother

unread,
Mar 4, 2020, 6:08:17 PM3/4/20
to
Possible? Easy?

thx

Richard Smith

unread,
Mar 9, 2020, 4:09:46 PM3/9/20
to
Peter Fairbrother <pe...@tsto.co.uk> writes:

> Possible? Easy?
>
> thx

Wouldn't it form carbides everywhere, especially on the grain
boundaries, particularly with Chromium, serving zero useful purpose
and thereby "robbing" the metal matrix of the solute metals which make
it stainless?
ie. you'd get a brittle material which corrodes badly?

There's extremely high-carbon stainlesses made by powder metallurgy,
giving a pocket knife costing about US$100 and where you can both do
any normal task and shave with it.

Peter Fairbrother

unread,
Mar 11, 2020, 3:20:46 AM3/11/20
to
I don't know whether a carbon-rich layer would work, but if not maybe
nitrogen or something?

I am looking for an easy(-ish) home workshop process if possible.

Peter F

RustyHinge

unread,
Oct 22, 2020, 6:01:45 AM10/22/20
to
coat with stellite and regrind?

--
Rusty Hinge
To err is human. To really foul things up requires a computer and the BOFH.

Richard Smith

unread,
Oct 25, 2020, 5:17:58 PM10/25/20
to
Useful properties are obtained by giving a high-carbon layer to
stainless steels. This was being looked at 20 years ago as I met it.
They were aiming for around 6.5%C. Can't remember the method used.
Cannot be "case-hardening" with time at temperature in a carbon-source
material, as the carbon would react with the alloying elements and give
carbides (?)
0 new messages