Process comparison
Stick Welding vs Flux-Cored Welding
Flux core deposits several times faster because the wire never stops feeding; stick is more portable, handles any thickness and stores indefinitely.
SMAW vs FCAW at a glance
| Stick Welding | Flux-Cored Welding | |
|---|---|---|
| AWS designation | SMAW — Shielded Metal Arc Welding | FCAW — Flux-Cored Arc Welding |
| Filler delivery | Flux-coated consumable electrode, no gas bottle. | Tubular wire with flux inside, with or without gas. |
| Polarity | DCEP, DCEN or AC depending on the electrode classification | DCEP for gas-shielded wires; DCEN for most self-shielded wires |
| Typical amperage | 20–350 A depending on rod diameter | 70–450 A depending on wire size |
| Typical voltage | 20–35 V | 22–30 V |
| Positions | All positions with most electrodes; E7024 and other 2-series rods are flat and horizontal only | All positions with 71T wires; 70T flat-and-horizontal wires exist for high deposition |
| Deposition rate | Moderate, reduced by stub loss and by stopping to change rods | The highest of the manual arc processes |
| Shielding | Self-shielding from the flux coating; no external gas | Flux only (self-shielded) or flux plus external gas (gas-shielded) |
| Skill level | Demanding at first — arc length is controlled entirely by hand | Similar to MIG, with slag removal added |
| Slag | Yes — chip between passes | Yes — chip between passes |
Which should you use?
Both are self-shielding options that work where MIG cannot, and both leave slag to chip. Flux core wins decisively on throughput — continuous feed means no stub loss and no stopping every fourteen inches, and it runs at higher current than a comparable stick rod. Stick wins on simplicity and reach: a machine, leads and rods, with nothing to feed, no spool to keep dry, and no restriction on thickness. In a shop with long welds, flux core. In the field with varied short welds, stick.
Choose stick welding when
- Field work and varied short welds
- Remote locations with no feeder
- Thick sections and any position
- Long-term consumable storage
Choose flux-cored welding when
- Shop fabrication with long welds
- Maximum deposition rate
- Heavy plate in multiple passes
- Production structural fabrication
Strengths and limitations
Stick Welding
Advantages
- Works outdoors in wind and rain where gas-shielded processes fail
- Most portable equipment — a machine, leads and a box of rods
- Tolerates rust, mill scale, paint and poor fit-up better than MIG or TIG
- Electrode range covers carbon steel, stainless, cast iron, nickel and hardfacing
Limitations
- Slag must be chipped between every pass
- Deposition rate is limited by stopping to change electrodes
- Arc length is controlled entirely by hand, which takes practice
- Not practical below about 18 gauge sheet
Flux-Cored Welding
Advantages
- Highest deposition rate of the manual arc processes
- Self-shielded wire works outdoors where MIG cannot
- Deeper penetration than solid MIG wire at the same current
- Handles thicker plate in fewer passes
Limitations
- Slag must be chipped between passes
- Produces noticeably more fume than solid wire, so ventilation matters
- Self-shielded wire has lower toughness and is usually thickness limited
- Gas-shielded wire still cannot be used in wind
Stick Welding vs Flux-Cored Welding — common questions
How much faster is flux core than stick?
Several times, once duty cycle is counted. Continuous feed removes rod changes and stub loss, and the wire runs at higher current than a comparable stick electrode.
Does flux core still need slag removal?
Yes, and it must be removed completely between passes. That is one of the two things flux core shares with stick, the other being that it shields itself when self-shielded.
Which is better outdoors?
Both work outdoors if the flux-cored wire is self-shielded. Stick is more practical in genuinely remote or awkward positions because there is no feeder to carry and position.
Can flux core weld as thick as stick?
Gas-shielded flux core can, in multiple passes. Self-shielded wire is usually limited by the manufacturer to material under about 1/2 in, which stick is not.
Full process guides
Stick Welding (SMAW)
Stick welding burns a flux-coated electrode that supplies both filler metal and shielding — the most portable, most wind-tolerant and most forgiving process on dirty or rusty steel.
Flux-Cored Welding (FCAW)
Flux-cored welding feeds a tubular wire with flux inside, combining MIG's continuous feed with stick's slag shielding — available gas-shielded for quality or self-shielded for wind.