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Tests for adhesion of galvanizing

February 29, 2008

what are the standard recommended tests for hot dip galvanized material as per ASTM ASTM A123 [link is to spec at TechStreet]?

MOHIDEEN ABDUL KHADER
QC INSPECTOR - KUWAIT

March 4, 2008

Adhesion is rarely an issue with hot dip galvanizing, but if you find a standard referring to it, it should also tell you how it can be measured or refer to another standard that does.

Because the mechanism of coating is alloying, not just a coating sticking to the steel, it either has happened or not. Rarely does the alloy form but be not adhered.

Geoff Crowley
galvanizing &
powder coating shop
Glasgow, Scotland

March 19, 2008

Adhesion as Mr.Geoff said should not be a major problem, but still some inspectors inist on that, according to astm ASTM A123 [link is to spec at TechStreet], take a stout knife and with considerable pressure take forward movement if the coating is intact your adhesion shall be good enough.

Ameen Syed Roohul
- Sharjah, U.A.E.

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