48009

Tests for adhesion of galvanizing  

February 29, 2008

what are the standard recommended tests for hot dip galvanized material as per ASTM 123

MOHIDEEN ABDUL KHADER
QC INSPECTOR - KUWAIT

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

 

Adhesion as Mr.Geoff said should not be a major problem, but still some inspectors inist on that, according to 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.