No passwords, No popups, No cost
we earn from your eBay & Amazon purchases

Home /
T.O.C.
Fun
FAQs
Good
Books
Ref.
Libr.
Adver-
tise
Help
Wanted
Current
Q&A's
Site 🔍
Search
curated with aloha by
ted_yosem
Ted Mooney, P.E. RET
- Pine Beach, NJ
finishing.com -- The Home Page of the Finishing Industry


  pub
  The authoritative public forum
  for Metal Finishing since 1989

-----

Passivation of 420 Stainless Steel

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


Q. Can nitric-acid passivation process make 420 Stainless steel as corrosion resistant as 316? Please comment. Many thanks.

Kwok-wai CHOOK
- Hong Kong, China
1999



Sorry, Mr. Chook, it won't work. 316 is a very high grade of chemically resistant stainless steel. Passivation of 420 will help deter flash rusting, but it won't turn 420 into 316.

Ted Mooney, finishing.com
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey



I was a surgical instrument repair/maker for over 20 years.The industry used 410 and 420 series for cutting tools due its ability to hold an edge, and 316 series to make rods and screws for putting people back together. Just pull out a chart showing the difference in composition of both and the reason is quite apparent.

Best wishes,

al mullins
- Fayetteville, Georgia




(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

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:

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


About/Contact  -  Privacy Policy  -  ©1995-2024 finishing.com, Pine Beach, New Jersey, USA  -  about "affil links"