No passwords, No popups, No cost, No AI:
we earn from 'affiliate link' purchases, making the site possible

Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

finishing.com -- The Home Page of the Finishing Industry

  The authoritative public forum
  for Metal Finishing since 1989

-----

Does this analysis mean real 316 stainless?

December 10, 2009

I tested a ss316 casted piece, the result is mo 2.15 ni9.88 cr19 c 0.07, si 0.91, mn 0.51 p 0.029 s 0.008
as a bit rust found on surface, can it called as 316

Steve Au
steel erector -Hong Kong

December 30, 2009

My book of alloys (an internet search can get you this info too) says 316 is
C 0.08 max
Cr 16.00-18.00
Mn 2.00 max
Mo 2.00-3.00
Ni 10.00-14.00
P 0.045 max
S 0.030 max
Si 1.00 max

So your Ni is a hair low but it otherwise looks okay. Surface rust doesn't necessarily mean the alloy composition isn't up to spec, it could be due to surface contamination from another iron source, or exposure to high levels of chloride.

Ray Kremer
Stellar Solutions, Inc.

McHenry, Illinois

(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: