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
-----

Meaning of C

What does the C stand for in 440C Steel?

Alyn Brown
student - Columbia, MO, US
2004

The C indicates that this is a different alloy (UNS designation S44004) from Type 440A (UNS S44002) and Type 440B (UNS S44003). These alloys have essentially the same alloying elements, but the carbon content differs. 440A specifies C = 0.60 to 0.75% (by mass), 440B specifies C = 0.75 to 0.95%, and 440C specifies C = 0.95 to 1.2%. For more information, check out ASM Handbook Volume 1 or one of the producers websites like Carpenter.

Toby Padfield
Automotive module supplier - Michigan
2004

(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: