What is the suggested amperage for using a 3/32" E 7018 (E4918) on pipe in the 5G position?

What is the suggested amperage for using a 3/32" E 7018 (E4918) on pipe in the 5G position?

• A. 40 - 60 amps
• B. 70 - 110 amps
• C. 120 - 150 amps
• D. 10 - 20 amps

Answer: (B)

For a 3/32" E7018 electrode on pipe in the 5G position, the amperage is driven by electrode size and the need for a stable, controllable arc that produces a sound, ductile weld. A 3/32" rod is relatively small, so the recommended current is typically in the 70 to 110 amp range. This amount of heat provides proper fusion without excessive penetration, helping maintain good bead shape, slag control, and deposition. In the 5G horizontal pipe position, you want enough heat to wet in the bead and avoid undercut, but not so much that you risk burn-through on thinner walls or make the weld difficult to control. Staying within 70–110 amps gives a stable arc for this electrode size and position, while lower current can lead to a weak arc and poor fusion, and higher current can cause excessive penetration and overheating.

For a 3/32" E7018 electrode on pipe in the 5G position, the amperage is driven by electrode size and the need for a stable, controllable arc that produces a sound, ductile weld. A 3/32" rod is relatively small, so the recommended current is typically in the 70 to 110 amp range. This amount of heat provides proper fusion without excessive penetration, helping maintain good bead shape, slag control, and deposition. In the 5G horizontal pipe position, you want enough heat to wet in the bead and avoid undercut, but not so much that you risk burn-through on thinner walls or make the weld difficult to control. Staying within 70–110 amps gives a stable arc for this electrode size and position, while lower current can lead to a weak arc and poor fusion, and higher current can cause excessive penetration and overheating.