Home /
T.O.C.
FAQs
 
Good
Books
Ref.
Libr.
Advertise
Here
Help
Wanted
Current
Q&A's
Search 🔍
the Site
pub Where the world gathers for
plating, anodizing, & finishing Q&As since 1989





-----

STAINLESS : Help with heat-treating and annealing





2003

I am starting to make arms and armor out of stainless steel. These are decorative and real use environments. I need some information on what to use to anneal and heat treat stainless steel without messing making an ugly non-stainless mess. Also what of post heat-treating dips into liquid nitrogen? I have heard some rumors that this does help stainless...?

John Fly
N/A - Columbi, Tennessee, USA



2003

John-

While unsatisfying, my best answer is "It depends". Are you heat treating martensitic stainless steels, i.e. cutlery grades, to get high hardness at knife edges? Or are you heating up cold worked 300 series sheets to get rid of any ferromagnetic properties?

Generally if you want to take finished stainless steel parts to over 500F, you'll want to use some kind of atmosphere, to avoid discoloration. You also want any 300 series parts to spend a minimal amount of time lingering between 1500 and 800 F, to avoid sensitization. There are a few publications at www.ssina.com that you should read, and the Nickel Development Institute at www.nidi.org also has a lot of information.

There is anecdotal evidence that cryogenic processing will make your brass horns sound sweeter, or make dies last longer. I remain a skeptic, but a simple Google search will get you a number of firms that offer this service.

lee gearhart
Lee Gearhart
metallurgist - E. Aurora, New York


none
finishing.com is made possible by ...
this text gets replaced with bannerText
spacer gets replaced with bannerImages

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories:

 
Jobshops
Capital
Equipment
Chemicals &
Consumables
Consult'g, Train'g
& Software


About/Contact    -    Privacy Policy    -    ©1995-2023 finishing.com, Pine Beach, New Jersey, USA