Guide 5

Question 1

According to the AWS, the nominal composition of a brown colour-coded tungsten electrode is:

Answer 1

tungsten and 0.25% zirconium oxide

Question 2

The following does not characterize shielded metal arc welding of aluminum:

Answer 2

high quality welds, capable of meeting radiographic standards

Question 3

Alloyed tungsten electrodes have some advantages over pure tungsten electrodes. Name one thing that is not an advantage:

Answer 3

lower electrode cost

Question 4

A stainless steel electrode with the designation E316-25 would be a:

Answer 4

basic flux electrode usable for a flat grooves and horizontal fillets only