Question

What is the max diameter of SMAW electrode that may be used for the standard tack welders qualification test?

A) 3 mm
B) 4 mm
C) 4.5 mm
D) 6 mm

Answer 1

For a standard tack welder's qualification test, a 4 mm diameter SMAW electrode is typically the maximum size used. While various test standards may apply, 4 mm is a common upper limit for such welder qualifications.

Step-by-step explanation:

The maximum diameter of an SMAW (Shielded Metal Arc Welding) electrode that may be used for a standard tack welder's qualification test as per most guidelines is 4 mm, which is option B. The choice of electrode size depends on the specific qualification test and the code that is being followed, but typically 4 mm is considered a standard for such qualification tests. Larger diameters, such as 4.5 mm or 6 mm, can be used for other applications, but for qualifying tack welders, 4 mm is commonly the upper limit. It is important to always refer to the specific codes and standards set by governing bodies such as the American Welding Society (AWS) or other relevant authorities for the most accurate requirements.