AL 822 Aluminum Brazing Rod

AL 822 is a low-temp, high-strength aluminum brazing rod designed for aluminum-to-aluminum and aluminum-to-copper connections.

It features a non-corrosive flux core that requires no post-braze cleaning, making it ideal for outdoor heating applications in HVAC/R systems and automotive repairs.

AL 822 aluminum brazing rod specifications

Our AL 822 aluminum brazing rods are manufactured to meet the highest international standards and industry-specific certifications:

AWS A5.8 / ANSI/AWS A5.10, ISO 17672, AS 9100
IATF 16949, ISO 9001, ISO 14001

Fully compliant with RoHS (EU directive on hazardous substance restrictions), and marine classification certifications such as DNV, LR, ABS, and BV are available upon request.

Mill test certificates (EN 10204 3.1, COA, COC) can be provided, with third-party inspection available upon request, and free samples offered for quality evaluation. Contact us

certification

AL 822 aluminum brazing rod product

Nominal composition: Zinc 78.00%, Aluminum 22.00%
Liquidus temperature: 900°F (482°C)
Solidus temperature: 800°F (427°C)
Rod size: 0.090" diameter × 20", 4 rods per bundle, 20 bundles per box
Packaging: Standard plastic tube packaging; custom packaging available on request

AL 822 aluminum brazing rod

AL 822 aluminum brazing rod composition

Aluminum	22% ± 1.0%
Zinc	Remainder
Cadmium	0.01% Max
Lead	0.1% Max
Other Elements (Total)	0.15% Max

AL 822 aluminum brazing rod performance

Property	Value
Color	Grayish-White
Melting Point (Solidus)	800°F (426°C)
Flow Point (Liquidus)	900°F (482°C)
Brazing Range	900°F – 1000°F (482°C – 537°C)
Approximate Density	0.190 lbs/in³ (≈ 5.25 g/cm³)

The performance of a brazed joint depends on various factors, including the properties of the base materials, joint design, and the metallurgical interaction between the base metal and the filler metal.

To achieve maximum joint strength, an optimal joint clearance of 0.003 to 0.005 inches (0.076–0.127 mm) on each side is recommended.

Even with wider gaps, sufficient strength can still be achieved depending on the final operating conditions.

Compared to other commercially available soft solders, zinc-based brazing alloys offer the highest strength. When proper joint design techniques are applied, their shear strength can typically exceed 18, 000 PSI. Contact us

welding

AL 822 aluminum brazing rod advantages

Effectively joins aluminum to aluminum and aluminum to copper.
Begins melting at 800°F (426°C), ideal for brazing aluminum alloys with minimal thermal impact.
Proprietary fluxless technology eliminates the need for external flux, improving safety and efficiency.
Higher zinc content enhances spreading and bonding on aluminum surfaces.
Ideal for HVAC/R coils, automotive components, radiators, and general aluminum repair.
Conforms to ANSI Z49.1 welding safety standards.
Simplifies brazing process, reduces cycle time.
Produces clean, strong, and visually appealing joints.

AL 822 aluminum brazing rod industry applications

HVAC & Refrigeration

Reliable aluminum filler for brazing coils in air conditioning and refrigeration units. Ideal for sealing leaks and punctures.

Automotive

Used in manufacturing and repairing radiators, condensers, and aluminum tubing. Supports EV and hybrid system assembly.

Aerospace (non-structural)

For brazing aluminum ducts, housings, and heat dissipation parts that require low-temp and lightweight solutions.

Electronics & cooling

Connects aluminum heat sinks and modules in temperature-sensitive electronic devices.

General industrial repair

Suitable for quick repairs of aluminum containers, enclosures, and light structures—perfect for on-site fixes.

Get the right fit for your process

Custom formulations

Lucas Milhaupt offers a full range of alloys, fluxes, and brazing materials, including wire, rod, preforms, foil, atomized powders, and paste.

Metal stamping

With an extensive inventory of over 4, 000 dies, we can quickly respond to your stamping needs and produce high-quality stamped parts.

Slitting

Our operators slit strip to widths from 6 to 0.062 inches and package on spools or coils as needed.

Strip rolling

We can roll strip to thicknesses not directly available from the mill. Our custom rolling services support widths up to 6 inches (152.4 mm) and thicknesses as low as 0.001 inches (0.025 mm).

Wire drawing and flattening

We draw wire from 0.187 to 0.005 inches using carbide or diamond dies, in round or custom shapes.

Wire preforms (rings)

We draw wire from 0.187 to 0.005 inches in round or custom shapes.

Brazing pastes and flux products

Our brazing pastes are made from atomized filler metal powder, flux (if required), and a binder that holds components in place during assembly.

Post-braze cleaning for AL 822 aluminum brazing rod

Cesium-based flux and its residues are non-hygroscopic and non-corrosive, so post-braze cleaning is usually not required.

If cleaning is needed, use a 50/50 mixture of nitric acid and distilled water. Parts can be immersed and gently agitated if necessary. Contact us

Flux options for AL 822 cored wire and preforms

Flux Type	Characteristics
50:50 Cs-based flux	Lower melting point; suitable for shorter heating cycles
60:40 Cs-based flux	Slightly higher melting point; longer life for extended heating

Why choose us – AL 822 aluminum brazing rod

With over 75 years of experience, Chalco delivers top-quality brazing alloys and HVAC/R solutions trusted by global OEMs.

High-performance alloys and flux-cored products
Proven to improve efficiency, yield, and joint strength
Reduce alloy usage and warranty issues
On-site engineering support for process optimization

AL 822 aluminum brazing rod storage

Chalco guarantees a shelf life of 90 days from the shipping date when AL 822 is stored in its original, unopened packaging.

Ideal storage conditions are 65–75°F (18–24°C) in a clean, dry environment. If separation occurs, the brazing paste may need to be remixed for consistency.

In practice, if no issues arise, the product can often be used beyond the 90-day period.

Flux-cored wire, when properly stored, can maintain full functionality for up to 2 years.