Recommended Amperages for Electrodes by Type and Diameter

The recommended amperages for electrodes vary depending on the type and diameter of the electrode. Here are some general guidelines:

  • Mild steel electrodes:

    • 1/16 inch diameter: 40-60 amps
    • 3/32 inch diameter: 60-80 amps
    • 1/8 inch diameter: 80-100 amps
    • 5/32 inch diameter: 100-125 amps
    • 3/16 inch diameter: 125-150 amps
  • Stainless steel electrodes:

    • 1/16 inch diameter: 30-50 amps
    • 3/32 inch diameter: 50-70 amps
    • 1/8 inch diameter: 70-90 amps
    • 5/32 inch diameter: 90-110 amps
    • 3/16 inch diameter: 110-130 amps
  • Cast iron electrodes:

    • 1/16 inch diameter: 40-60 amps
    • 3/32 inch diameter: 60-80 amps
    • 1/8 inch diameter: 80-100 amps
    • 5/32 inch diameter: 100-125 amps
    • 3/16 inch diameter: 125-150 amps
  • Aluminum electrodes:

    • 1/16 inch diameter: 30-50 amps
    • 3/32 inch diameter: 50-70 amps
    • 1/8 inch diameter: 70-90 amps
    • 5/32 inch diameter: 90-110 amps
    • 3/16 inch diameter: 110-130 amps

It is important to note that these are only general guidelines and may vary depending on the specific welding project and conditions. It is always best to consult with a welding expert or refer to the manufacturer's recommendations for the specific type and diameter of electrode being used.

Stick Welding Recommended Amperages for Electrodes by Type and Diameter
Current Range, A
Electrode
Diameter
(in.)
Electrode Type
6010,
6011
6012 6013 6020 6027 7014 7015,
7016
7018 7024,
7028
1/16 — 20-40 20-40 — — — — — —
5/64 — 25-60 25-60 — — — — — —
3/32 40-80 35-85 45-90 — — 80-125 65-110 70-100 100-145
1/8 75-125 80-140 80-130 100-150 125-185 110-160 100-150 115-165 140-190
5/32 110-170 110-190 105-180 130-190 160-240 150-210 140-200 150-220 180-250
3/16 140-215 140-240 150-230 175-250 210-300 200-275 180-255 200-275 230-305
7/32 170-250 200-320 310-300 225-310 250-350 260-340 240-320 260-340 275-365
1/4 210-320 250-400 250-350 275-375 300-420 330-415 300-390 315-400 335-430
5/16 275-425 300-500 320-430 340-450 375-475 390-500 375-475 375-470 400-525