Updated on 2025-11-21
MIG wire prices vary a lot by material (steel vs aluminum), diameter (.023–.045), spool size (1–33 lb), and brand. Below are current ranges and examples to help you budget smartly and pick the right wire for your job.
As of Nov 21, 2025, typical MIG wire prices are: aluminum 1-lb (4043/5356) $12–$40; ER70S-6 mild steel $25–$30 (2-lb), $65–$90 (10-lb), $100–$140 (33-lb); E71T-11 flux-cored $25–$35 (2-lb), $90–$130 (10-lb), $130–$210 (25–33-lb). Brand and spool size drive most differences.
Key takeaways
- Price depends most on wire type, diameter, and spool size—check all three before comparing.
- Solid ER70S-6 10-lb spools usually land in the $65–$90 range; flux-cored runs higher.
- Use aluminum only when your base metal needs it; it costs more and often requires a spool gun/liner.
Understanding MIG welding wire types
Solid wire (e.g., ER70S-6) needs shielding gas and excels on clean steel. Flux-cored wire (e.g., E71T-11) makes its own shielding, so it’s better outdoors or on less-clean material. Aluminum (4043/5356) is specialized for aluminum base metals and may require a spool gun or push-pull setup.
Price ranges for different wire types (as of Nov 21, 2025)
| Wire type | 1–2 lb | 10 lb | 25–33 lb |
|---|---|---|---|
| Solid ER70S-6 (mild steel) | $12–$30 | $65–$90 | $100–$140 |
| Flux-cored E71T-11 (gasless) | $25–$35 | $90–$130 | $130–$210+ |
| Aluminum 4043/5356 | $12–$40 (per 1 lb) | Varies (brand-specific) | Varies (brand-specific) |
Examples: ER70S-6 .030, 10-lb spools commonly list near $79.99 (Hobart); Blue Demon 4043 .035, 1-lb has recently been ~$11–$12; 33-lb E71T-11 spools are widely listed around $130–$210 depending on brand and diameter.
Factors influencing MIG welding wire costs
Wire material & diameter
Aluminum wire usually costs more than mild steel. Larger diameters and heavier spools raise the price because you’re buying more metal.
Brand & packaging
Premium brands and specialty alloys command higher prices. Manufacturer packaging options (1, 10, 25, 33 lb; coils vs drums) also affect cost.
Inventory, promos & seasonality
Retail promotions, free-shipping thresholds, and local stock can shift street prices week to week. Compare per-pound costs when possible.
Comparing brands and their pricing
Across mainstream retailers, ER70S-6 in 10-lb spools clusters near the same band regardless of brand, while flux-cored and aluminum show wider spread. Use per-pound math and confirm diameter/grade (e.g., ER70S-6 vs ER70S-3; 4043 vs 5356) before deciding.
Discounted and promotional offers
Watch for sale pricing on common SKUs (e.g., 10-lb ER70S-6) and bundle discounts. Signing up for store rewards often unlocks small but real savings on consumables.
Quality vs. cost: finding the right balance
- Match the wire to the job: ER70S-6 for clean steel with gas; E71T-11 for windy/outdoor work; 4043/5356 only for aluminum base metal.
- Reduce waste: buy spool sizes you’ll actually finish within a reasonable time to avoid storage-related degradation.
- Price check by pound: compare $/lb across brands and spools.
Applications of MIG welding wire
Automotive & fabrication
ER70S-6 is popular for mild-steel body panels and general fabrication. Flux-cored is helpful outside or on less-clean steel. Aluminum wire (4043/5356) fits lightweight and corrosion-resistant builds.
Construction & marine
Flux-cored is common in field work because it doesn’t require shielding gas. Aluminum wire sees use in boat building and repair where corrosion resistance matters.
Tips for purchasing MIG welding wire
- Confirm base metal, process, and diameter first (e.g., .030 vs .035).
- Check liner/contact-tip compatibility and the drive rolls your feeder uses.
- Compare $/lb across spool sizes and brands; factor shipping.
- Read recent reviews for feedability and consistency; avoid aged or moisture-exposed stock.
Safety considerations when using welding wire
- Wear an appropriate auto-darkening helmet, gloves, and non-synthetic clothing.
- Ensure ventilation or fume extraction, especially with flux-cored wire.
- Store wire dry and sealed; keep combustibles away from the weld area.
Where to find the best deals
Compare a local farm & fleet store, a welding supplier, and a general online retailer. Check per-pound pricing, shipping thresholds, and return policies. For specialty alloys/diameters, industrial suppliers may be more consistent than big-box stores.
FAQs
What drives MIG wire price the most?
Wire type (steel vs aluminum), spool weight, and brand. Diameter also matters—larger wires and heavier spools cost more per purchase, though often less per pound.
Is flux-cored wire always more expensive?
Per spool, usually yes compared with solid ER70S-6 of the same size. Flux-cored offers gasless convenience and field versatility, which adds cost.
How much is 10 lb of ER70S-6 right now?
Common retail is roughly $65–$90 depending on brand and diameter. Promotions and local stock can move it a bit either way.
Do I need a spool gun for aluminum MIG?
Usually yes. Aluminum wire feeds better with a spool gun or push-pull system, plus an appropriate liner and contact tips.
What’s the smartest way to compare prices?
Compare the cost per pound for the same wire classification and diameter, then factor shipping and any discounts.
