TIG vs Laser

Arc vs photons.
Skilled hand vs automation.
Both make great welds.

TIG produces excellent welds by experienced welders. Laser welding produces similar quality via automation with less distortion and narrower heat-affected zone. Each has economic and technical sweet spots.

Get a Quote DFM guide

01 · At a glance

Side-by-side summary.

Option A

TIG Welding (GTAW)

Gas Tungsten Arc Welding. Non-consumable tungsten electrode, inert gas shielding, optional filler rod. Manual or automated. Workhorse for precision welding of stainless, aluminum, specialty alloys.

Option B

Laser Welding

High-power laser (fiber or CO2) provides focused energy for welding. Narrow heat-affected zone, minimal distortion, very fast. Automated with robotic handling. Premium process.

02 · Detailed comparison

Feature-by-feature breakdown.

Attribute	TIG Welding	Laser Welding
Energy source	Arc (electrical)	Laser beam
Heat input	Moderate	Low (concentrated)
Heat-affected zone	2-5 mm wide	0.3-1 mm wide
Distortion	Moderate	Minimal
Speed (1mm stainless)	100-200 mm/min	2000-8000 mm/min
Weld appearance	Clean with craftsmanship	Very uniform and consistent
Penetration depth	Up to 6-8 mm	Up to 10-15 mm (keyhole)
Operator skill required	High (manual)	Programming skill (automated)
Equipment cost	$2K-30K	$200K-2M+
Setup per part	Minimal	Fixturing + programming
Economic break-even	Low-volume	High-volume (1000+ parts)
Typical applications	Aerospace, prototype, custom	Automotive, medical device, battery

03 · Decision guide

When to choose each.

Choose TIG Welding (GTAW) when:

Low-volume and custom welding
Complex 3D welding paths
Prototype development
Repair welding
Small shops without laser capital
When operator skill is available

Choose Laser Welding when:

High-volume production (1000+ parts)
Minimal distortion critical
Tight dimensional accuracy post-weld
Battery cell and pack welding
Medical device welding (hermetic)
Thin-thin or dissimilar joining

FAQ

Common questions.

Laser concentrates high energy in small area — creates narrow weld with minimal heat spreading into base material. Heat-affected zone 0.3-1mm wide vs TIG's 2-5mm. Less heat expansion of surrounding material means less cooling shrinkage and less distortion. For precision post-weld dimensions, laser often enables welded parts that don't need post-weld machining.

Properly executed, both produce full-strength welds matching base material. Differences: TIG weld bead typically has slower cooling rate, more ductile weld metal. Laser weld with keyhole mode has rapid solidification — can be harder, potentially more brittle. Proper post-weld treatment (stress relief, heat treatment) normalizes differences. For critical welds, test per application — both processes capable of meeting aerospace/medical requirements.

TIG economics: low equipment cost, higher per-weld labor. At $50/hour labor and 2 minutes per weld = $1.67 per weld + setup. Laser: high equipment cost amortized, low per-weld. At fully-automated $200K laser, 10-second welds × 10,000 welds per day = $0.50 per weld after depreciation. Break-even around 1,000-5,000 parts per year depending on weld complexity. Below that, TIG wins; above that, laser wins.

Better than TIG for many dissimilar combinations. Narrow HAZ limits intermetallic formation. Copper-aluminum (battery tabs): laser welding standard, nearly impossible with TIG. Aluminum-steel: possible with laser using specific parameters. For complex metallurgical combinations, laser often enables welds TIG cannot make.

Fit-up critical: laser has small working tolerance (0.1-0.2mm joint gap maximum). TIG tolerates 0.5-1mm gap with filler. Reflective materials (copper, gold): fiber laser works but requires specific parameters. Complex 3D geometry: requires 5-axis robotic integration. For custom or poor-fit-up welding, TIG is more forgiving and appropriate.

TIG welding: extensive in-house capability, multiple welders qualified for various materials. Aluminum 5052/6061/7075, stainless 304/316L, Inconel 718, titanium Ti Gr.5. Laser welding: we partner with specialty laser welding shops for production work. Integrated workflow — we handle machining, welding partner handles welding, we finish. For prototype or complex 3D welding, we keep TIG work in-house for fastest turnaround.