Joining
MIG Welding vs Stick Welding
MIG (GMAW) feeds a continuous wire electrode under shielding gas, depositing 3 to 8 lb of weld metal per hour. Stick (SMAW) burns flux-coated electrodes one rod at a time at 1.5 to 3 lb per hour. The trade is shop productivity against field toughness and tolerance for dirty steel.
| MIG Welding | Stick Welding | |
|---|---|---|
| Deposition rate | 3 to 8 lb/hr, continuous wire | 1.5 to 3 lb/hr with rod changes every 1 to 2 min |
| Equipment cost | $1,200 to $3,500 plus gas bottle rental | $300 to $1,500 complete |
| Wind and weather | Shielding gas fails above about 8 km/h wind | Flux shielding works in wind and light rain |
| Surface prep | Needs clean bare metal | 6011 and 7018 tolerate mill scale and light rust |
| Thin gauge capability | Welds 0.8 mm sheet at 30 to 90 A short circuit | Difficult below 3 mm, burn-through risk |
| Operator learning curve | Usable beads in 8 to 20 hr of practice | 40 to 100 hr for consistent rod control |
| Consumable efficiency | Wire $1.50 to $3.00/lb, 90%+ becomes weld | Rods $2 to $5/lb, only 55 to 65% becomes weld |
Choose MIG Welding when
- Production welding in a shop with gas supply
- Sheet and tube work from 0.8 to 6 mm
- You need to train new welders fast
Choose Stick Welding when
- Outdoor structural and repair work in wind or rain
- Rusty or mill-scaled steel with minimal prep time
- Remote sites where hauling gas bottles is impractical
The verdict
Run MIG in the shop; three times the deposition rate pays for the gas bottle within weeks on any production schedule. Keep stick for wind, rain, rusty steel, and remote sites where shielding gas is a liability. A $500 stick machine backing up a MIG rig covers 95% of fabrication work.
Cost comparison
Equipment favors stick: $300 to $1,500 versus $1,200 to $3,500 plus roughly $40 a month in bottle rental. Labor reverses it. At $30 per hour and 2 lb/hr deposition, stick weld metal costs about $15 to $20 per deposited pound; MIG at 6 lb/hr lands near $5 to $8. Rod stubs and slag waste 35 to 45% of purchased electrode weight while wire runs above 90% efficient. A shop burning 10+ lb of weld metal weekly recovers the MIG premium inside two months.
Common questions
Is flux-cored wire a middle option?
Yes. Self-shielded FCAW gives wire-fed productivity of 2 to 5 lb/hr without a gas bottle and handles wind like stick, which is why it dominates structural field work. The trade is more spatter, slag to chip, and wire at $3 to $6 per lb.