Question

identify the 1 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

Explanation:

In AWS classification for electrodes, the digit after the tensile strength (here in E7018 - 1 H4R, after 70 which is tensile strength in KSI) represents the welding position. For example, in electrode classifications like EXX1X, the third digit (the 1 in this case) is related to welding position.

Answer:

Welding position