Aluminum-Brazing Flux, Flux 2805 is a non-corrosive, Potassiumfluoroaluminate, controlled atmosphere brazing Flux (CAB).
Appearance: White Powder
Bulk Density (20°C): approx. 500 kg/ m3
Melting Point: 550 -560°C
Solubility (20°C) Nearly insoluble in water
pH-value: 5 – 7,5
Surface area: approx. 1m2/cm3
Fe2O3 max 0.025%
SO4 max 0.010%
Si 02 max 0.200%
Cl max 0.020%
H2O approx. 3.000%
Flux 2805 is classified as non-hazardous according to current regulations.
Observe usual chemical handling precautions
Please see Safety Data Sheet (SDS) for additional information.
In 25 kg net weight, with interior polyethylene bag.
Can be customized to application.
Particle Size Range
Type Ultrafine Fine Medium Coarse
Particle size (d50) <8 μm 8-10.5 μm 10.5-12.5 μm 12.5-16 μm
Particle size (d95) <20 μm 20-25 μm 25-35 μm >35 μm
Flux 2805 is the superior, non-corrosive, CAB Flux used with confidence by leading manufacturer of brazed aluminum heat ex-changers around the world.
Flux Schweiß -und Lötstoffe USA, LLC produces Potassiumfluoroaluminate with the highest purity offering significant oxide dissolving performance advantages in comparison with other low purity fluxes.
Flux 2805 is designed to have a melting point of 550°C – 560°C allowing a longer period of time for braze surface preparation prior to the melting temperature of filler metals being reached during the CAB process. This has the effect of improving capillary action and filler metal flow.
Highest quality and product consistency is achieved by following strict manufacturing standards in our unique flux manufacturing technique.
Flux 2805 is produced in high concentration with various grain sizes to satisfy every possible requirement from our diverse customer base.
Flux 2805 is used as the active component in our extensive range of non-corrosive flux solutions and pastes including metallized and flame brazing pastes.
Benefits of Flux 2805:
Flux 2805 is the preferred product for use in the CAB brazing of aluminum heat ex-changers by leading manufacturers.
Flux Schweiß -und Lötstoffe USA, LLC is the leader in fluxing technologies and is continuously developing customer specific solutions to achieve maximum cost benefit in the processing sequence of heat exchange products.