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topic 9081

Rust-proofing Steel


(2001)

Q. I regularly use 1/4 inch thick steel plate cut @ 20 inch diameter and have it galvanized to prevent steel from rusting as these are installed underground. Are there ways other than galvanizing to prevent rusting?

Thanks,

Dan Prakash
- Surrey, B.C. Canada


(2001)

A. There are a multitude of ways to prevent rust besides galvanizing. There are other hot-dip processes, there is electroplating, there is powder coating, electrocoating, PVD, CVD, and more. You just have to know what your requirements are and take a look at different things to see if there is something better. The closest things I know to galvanizing would be zinc electroplating and Galfan. You can get more info on Galfan at www.galfan.org.

tim neveau
Tim Neveau
Rochester Hills, Michigan


A. Yes you can get more info there.

Vent mode on --

But an unbiased comparison, uhh, no.
It's one thing when a university develops a technology and quietly sells it off. No problem.
But when a university stays central to its marketing, with a compelling vested interest towards exaggerating the advantages of the technology and understating its weaknesses, the credibility of the university nosedives to the credibility level of any other infomercial producer. It is a modern day abomination. You followin' me there, cameraman?

Vent mode off :-)

It seems that Galfan is one useful modification of the galvanizing process, with probable corrosion resistance and other improvements over straight zinc.

Ted Mooney, finishing.com Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey



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