netneut
finishing.com -- The Home Page of the Finishing Industry
A website for Serious Education, promoting Aloha,
& the most FUN smiley you can have in metal finishing


Finishing.com has been free for 22 years,
but without net neutrality we could soon
cease to exist. Do us a solid, click on
the banner, and contact congress today!
HomeFAQsBooksHelpWantedAdvertiseForum
topic 4055

Passivation of 420 Stainless Steel

adv.   stellar solutions banner

(1999)

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)

Yes, and it can make silk purses out of sow's ears.

-- The Society for the Preservation of Barnyard Metaphors


(1999)

No, 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
Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey


(2000)

I was a surgical instrument repair/maker for over 20 years.The industry used 410 and 420 series for cutting tools due it's 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



This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site

ADD a Q or A to THIS thread START a NEW THREADView This Week's HOT TOPICS

Disclaimer: It's not possible to 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 may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices


©1995-2017 finishing.com     -    Privacy Policy
How Google uses data when you visit this site.