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 will answer questions pertaining to the galvanizing process and job-specific problems such as appearance or other issues. Some of the dues AGA members pay goes to the cost of researching technical problems. Because of this, the AGA cannot provide technical support to non-members; however, the AGA website and KnowledgeBase have many free resources available concerning many technical subjects. The AGA website also has a variety of free resources including publications and Dr. Galv articles. The AGA does provide technical support to architects, engineers, inspectors, and fabricators without the requirement of membership in the AGA. Support of this nature tends to fall into the area of concerns after the galvanizing process or about the performance of hot-dip galvanized steel in certain environments.

Are you still looking for the right answer? Ask an Expert

Comments

Daniel Barlow

Hi Rahul,

According to specification, the average coating thickness for specimens shall not be less than one coating grade below that required in Table 1.  This means that the first example in your question is correct.

“If I have a product that is .10” thick in structural shape, I should shoot for minimum average coating thickness grade of 65 for the lot ,per table 1.

At the specimen level however, per 3.2.9, I can be one grade lower.

... one grade lower per table 1, so I can be at grade 45 with 1.8 mil thickness…”

Rahul Chanana

Hi,

On page 3 of the standard A123/A123M-13 , in 3.2.9, line 10 ,  it says ” The minimum average coating thickness grade for any specimen shall be one coating grade below that required for the appropriate material category and thickness in Table 1”.

If I have a product that is .10” thick in structural shape, I should shoot for minimum average coating thickness grade of 65 for the lot ,per table 1.

At the specimen level however, per 3.2.9, I can be one grade lower.

Does this mean, one grade lower per table 1, so I can be at grade 45 with 1.8 mil thickness, OR one grade lower per table 2, at grade 60 with 2.4 mil thickness?

This is a matter of debate between our galvanizing supplier and the customer.

Can you please help us clarify this?

thanks,

Add Your Comment