Inspection
Methods to Reduce the Occurrence of Strain-Age Embrittlement
There are several ways to reduce the occurrence of strain-age embrittlement, but all methods focus on one aspect – reducing the stresses induced into the steel
Strain-Age Embrittlement
The most common type of embrittlement encountered in the hot-dip galvanizing process is strain-age embrittlement. Strain-ageing is a process where steel becomes very brittle in
Hydrogen Embrittlement
Hydrogen embrittlement occurs when steel cracks due to hydrogen that is trapped between the grains of the steel. Although steel commonly absorbs hydrogen during the
Who Is Responsible for Avoiding Embrittlement?
ASTM A143/A143M spells out who is responsible for avoiding embrittlement. The responsibility lies on the designer, fabricator, and the galvanizer, but each party
How long does it take to convert Chromium VI to Chromium III on galvanized steel?
Some galvanized steel is dipped into chromium quenches after hot-dip galvanizing. The chromium creates a passivated surface on the galvanized coating that prevents wet storage
Is it possible to have steel with chemistry that is too good for galvanizing?
It is possible to have steel chemistry with levels of silicon and phosphorus that are too low to meet the minimum thickness levels specified in
Can non-members get technical support from the AGA?
One of the benefits of being a member of the American Galvanizers Association (AGA) for galvanizers is free unlimited technical support. The AGA technical staff
Rough Surface on Overlapped Area of Progressively Dipped Steel
Why does the overlapped area on some progressively dipped steel have a rougher surface and thicker zinc coating than the other area of the same
Salt-Spray/Fog Accelerated Corrosion Testing of HDG Steel
Laboratory testing of the corrosion rate of galvanized steel coatings is not an accurate predictor of the actual corrosion rate in real-world applications. This is
Zinc-Rich Paints
Zinc-rich paint is applied to a clean, dry steel surface by either a brush or spray. Zinc-rich paints must contain either between 65% to 69% metallic zinc
