Question

identify the 1 in the aws classification for mild steel electrodes. question 5 of 8 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:

In the AWS classification of mild - steel electrodes like E7018 - 1H4R, the '1' indicates impact requirements. Each digit and letter in the classification has a specific meaning related to the electrode's properties and performance.

Answer:

Indicates impact requirements