Description
AL 718 aluminum-to-aluminum brazing rod — AWS BAlSi-4 (AA 4047)
A flux-cored aluminum-to-aluminum brazing filler metal built on the aerospace-grade AA 4047 / AWS BAlSi-4 (≈12% silicon) alloy. It forms strong, corrosion-resistant joints on all brazeable aluminum with an open-air torch — the non-corrosive flux is built into the rod, so there’s no separate fluxing and no cleanup. Twenty rods (20-pack).
Available in four pack sizes
This listing is the 20-pack. Need a different quantity?
Strong, spec-compliant aluminum joints
Aluminum-to-aluminum
A BAlSi-4 filler for joining all brazeable grades of aluminum and aluminum alloys.
Meets the specs
Complies with AA 4047, AWS A5.8/A5.8M BAlSi-4, AMS 4185, the ASME Boiler & Pressure Vessel Code, and ISO 17672 Al 112.
Flux is built in
Flux-cored with a non-corrosive flux, so there’s no separate fluxing step and no residue to clean off afterward.
Corrosion-resistant
Formulated for excellent corrosion resistance and to help manage galvanic potential on aluminum joints.
High strength, low erosion
Delivers strong joints with minimal base-metal erosion at the recommended clearances.
Open-air torch
Brazes with an open-air MAPP or propane torch — no shielding gas required.
Comparable to popular aluminum brazing rods from Alumaloy, Blue Demon, Burnsomatic, and Saker.
Key numbers
Braze in four steps
Prep the joint
Clean both surfaces and fit the parts to a 0.003–0.005″ clearance per side for the strongest joint.
Heat the base metal
Use an open-air MAPP or propane torch. AL 718 brazes at 1080–1120°F — hotter than low-temp alloys — so control the heat carefully (aluminum melts near 1220°F).
Flow the rod
Touch the flux-cored rod to the heated joint; the built-in non-corrosive flux pulls the alloy into the joint.
Cool & check
Let it cool — no flux cleanup needed. Inspect and pressure-test any refrigerant joint before returning to service.
Braze safely. Brazing produces fumes and requires open flame. Work in a well-ventilated area, follow ANSI Z49.1 and the product SDS, and use appropriate PPE. Refer to the SDS for full alloy composition and handling.
Technical details
Note: supplied in generic plastic tube packaging.
You’ll need heat
AL 718 brazes with an open-air torch. Grab a torch to go with it — and if you’re joining aluminum to copper, reach for AL 822 instead.
MAPP / propane torch
A self-igniting MAPP or propane torch brings the joint up to AL 718’s braze temperature.
Shop the torch →Torch with 5′ hose
The hose-fed version reaches into tight spots and awkward angles on a coil or under a dash.
Shop the hose torch →AL 822 rod
Joining aluminum to copper? AL 822 is the low-temp companion alloy for mixed-metal joints.
Shop AL 822 →AL 718 brazing rod FAQ
What does AL 718 join?
What specifications does it meet?
Do I need separate flux?
What temperature does it braze at?
AL 718 vs AL 822 — what’s the difference?
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Add AL 718 to your order
In stock and ready to ship. Building a brazing kit or need bulk quantities? Call and we’ll set you up.
Add to cart ↑ Contact usHANDY ONE® and Lucas-Milhaupt® are trademarks of their respective owner; other brand names are referenced for comparison and identification only and do not imply affiliation or endorsement. Brazing involves open flame and fumes — follow ANSI Z49.1, the product SDS, and all applicable safety practices. Confirm suitability for your application before use.
