Hobbyists & Industry luminaries alike learn on every visit
(we earn from 'affiliate link' purchases)

Curated with aloha by
Ted Mooney, P.E. RET

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

  The authoritative public forum
  for Metal Finishing 1989-2025

-----

Material identification

A very simple question, can some one please explain with regard to Stainless steel what the "M" of the formulae CF8M relates too?

Kind regard,

Eric Barraclough
valves - Auckland, Penrose, New Zealand
2003

First of two simultaneous responses --

It denotes the presence of molybdenum as a significant alloying element. The "M" doesn't specify a particular percentage, and the actual percentage varies from alloy to alloy (in CF8M it is 2.0 to 3.0 percent).

Bill Reynolds [deceased]
consultant metallurgist - Ballarat, Victoria, Australia
We sadly relate the news that Bill passed away on Jan. 29, 2010.
2003

Second of two simultaneous responses --

I am not sure about that particular code without researching, but I know in the ASTM code that the 'M' means that it was heat treated twice.

Jeremy Kuhn
- Lancaster, Pennsylvania, USA
2003

(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: