No cost, no registration, no passwords -- just aloha, fun & authoritative answers
(as an eBay Partner & Amazon Affiliate we earn from qualifying purchases)

Where the
world gathers for metal finishing
Q&As since 1989

-----

How are under-hood components rust-proofed?

Generally speaking, if I use mild steel parts, I get them Zinc Plated with a chromate film. On motorcars, most of the parts used under the bonnet are mild steel and do not rust. I don't believe they are zinc plated. What finish do they use?

Mark Z
Mechanical Engineer - Cape Town, WP, South Africa
2004

Some of the parts are aluminum, some are painted (probably galvanneal), and some are zinc or zinc-alloy plated with chromate or trivalent chromate films. And, looking under my hood, a lot of them have rusted after 5 years :-)

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