Aluminum welding cost is usually higher than welding mild steel because aluminum needs more skill, more cleaning and, most often, TIG welding. HomeGuide reports residential TIG welding at about $75 to $125 per hour and aluminum at about $1.25 to $4.00 per inch of weld. Small repairs are often governed by a shop minimum, so many simple jobs land in the low hundreds of dollars. Treat every figure here as a planning range and get a written quote.
Quick Answer
- TIG welding, the usual method for aluminum, is commonly quoted at $75 to $125 per hour.
- MIG welding is commonly quoted at $65 to $90 per hour and can work well on thicker aluminum with the right gun.
- Aluminum welding is often priced at about $1.25 to $4.00 per inch of weld.
- Cutting, fitting, cleaning and special materials can add to the bill, and small jobs often carry a minimum charge.
- Getting several quotes and preparing the parts yourself can keep the cost down.
Aluminum Welding Cost: Typical Rates
The table below uses HomeGuide’s published residential ranges. Actual quotes depend on your area, the shop and the job, so use them to check that a quote is in a sensible range.
| Item | Commonly quoted range | Notes |
|---|---|---|
| TIG welding (GTAW) | $75 to $125 per hour | Preferred for aluminum because of heat control and clean welds |
| MIG welding (GMAW) | $65 to $90 per hour | Faster on thicker aluminum; needs a spool gun or push-pull gun |
| Aluminum, per inch of weld | $1.25 to $4.00 | Depends on thickness, joint design and access |
| Mild steel, per inch of weld | $0.50 to $2.00 | Shown for comparison; aluminum usually costs more |
| Shop minimum charge | Often one to two hours | Small repairs may be billed at the minimum |
Source for the hourly and per-inch ranges: HomeGuide welding cost guide. Rates change over time, so confirm current prices locally.
Why Aluminum Costs More to Weld
- Oxide layer: Aluminum forms a tough oxide film that must be cleaned off before welding, which adds prep time.
- Heat conduction: Aluminum spreads heat quickly, so the welder must manage heat input to avoid burn-through or distortion.
- Equipment: TIG on aluminum needs an AC-capable machine, and MIG needs a spool gun or push-pull gun for soft wire. See our guide to TIG welding machine costs.
- Skill: Clean aluminum welds take practice, so experienced welders charge more.
- Filler and gas: Aluminum filler rod or wire and argon shielding gas add to the cost.
Factors That Change Aluminum Welding Cost
- Thickness and weld length: Thicker material and longer welds take more time and filler.
- Alloy: Some alloys, such as heat-treated grades, are harder to weld and may lose strength near the weld.
- Joint design and access: Tight spaces and awkward positions slow the work.
- Condition of the part: Corroded, oily or previously repaired aluminum needs extra cleaning.
- Location: Mobile and on-site work costs more than bringing the part to a shop.
For how per-inch pricing works across metals, read our welding cost per inch guide, and for TIG hourly pricing see how much TIG welding costs.
Extra Charges to Expect
- Cutting, fitting and fabrication of the aluminum pieces
- Materials such as aluminum stock, filler rod and shielding gas
- Cleaning, grinding and finishing the weld
- Minimum, setup, rush or travel fees
- Pressure or leak testing and inspection for critical parts
Ask the shop to list these separately so you can compare quotes fairly.
How to Estimate Your Project
A simple way to check a quote is to add up three pieces: estimated labor hours multiplied by the hourly rate, materials, and any set-up or minimum fee. Then compare that with a per-inch estimate of the weld length. If a quote is far outside both numbers, ask what it includes.
Tips to Save on Aluminum Welding
- Get two or three itemized quotes and photos-based estimates.
- Clean and fit the parts yourself if the welder agrees, to cut labor time.
- Choose simple joints and avoid unnecessary welds in the design.
- Group small repairs together so you pay one minimum charge.
- Consider whether a different metal or a mechanical fastener would work for non-critical parts.
Aluminum wheels are a common repair job, with their own pricing and safety limits. See our guide to alloy wheel welding cost. If you are comparing materials, our guide on aluminum versus plastic welding costs may help.
Choosing a Quality Aluminum Welder
Ask whether the welder works with aluminum regularly, and ask to see examples. For structural or load-bearing aluminum, ask whether the welder is qualified to the relevant code, such as AWS D1.2, the structural welding code for aluminum. A cheap weld that cracks can cost far more to fix than a properly done one.
Frequently Asked Questions
How much does aluminum welding cost?
Many shops quote about $75 to $125 per hour for TIG welding and about $1.25 to $4.00 per inch of weld, with small jobs often subject to a minimum charge. Actual prices vary by shop, area and job, so get written quotes.
Is aluminum more expensive to weld than steel?
Usually yes. Aluminum needs more cleaning, more skill and often TIG welding, so shops generally charge more per inch than for mild steel.
Can I weld aluminum myself?
You can, but it is harder than welding steel. You need an AC-capable TIG welder or a MIG welder with a spool gun or push-pull gun, aluminum filler, argon gas and good prep. Practice on scrap first and wear proper protective equipment.
What equipment is needed for aluminum welding?
You need a TIG welder with AC output or a MIG welder set up for aluminum, matching aluminum filler metal, shielding gas, cleaning tools and safety gear including a welding helmet and gloves.
Can aluminum be welded in any weather?
Wind, rain and moisture can ruin shielding gas coverage and cause porosity, so outdoor aluminum welding needs shelter from drafts. Indoor or sheltered work gives the best results.
Conclusion
Aluminum welding cost depends mainly on the method, the thickness and length of the weld, and the prep the part needs. Use the hourly and per-inch ranges to sense-check quotes, ask for itemized pricing and choose a welder with real aluminum experience.
