Question

identify the e in the aws classification for mild steel electrodes.

hydrogen level in ml/100 g
welding position
minimum tensile strength in ksi
indicates impact requirements
electrode
type of coating and current
indicates requirements of absorbed moisture test

e7018-1 h4r

Explanation:

Identify the AWS classification prefix

Using the AWS Definition and Electrode Selection knowledge points
The letter "E" at the beginning of an AWS mild steel electrode classification (such as E7018-1 H4R) designates that the consumable is an Electrode.

Answer:

• Hydrogen level in ml/100 g
• Welding position
• Minimum tensile strength in KSI
• Indicates impact requirements
• Electrode (Correct answer)
• Type of coating and current
• Indicates requirements of absorbed moisture test