Phos-Copper-Silver Brazing Alloys (USA 0, USA 2%, USA 5%, USA 6F and USA 15%) are all manufactured to offer economy as well as consistently high standards of quality and performance. These alloys are excellent for joining copper to copper where the phosphorus content of the phos-copper-silver brazing alloy reacts with the copper of the base metal in such a way that the filler metal becomes "self-fluxing”. For this reason these alloys are used quite extensively for joining closed copper tubing in the refrigeration and air conditioning industries where flux removal after brazing is difficult to impossible.Washington Alloy Phos-Copper-Silver Brazing Alloys are also used to join copper to brass and brass to brass, however, when joining these combinations a paste flux is recommended. Please keep in mind that these alloys are not to be used on iron or steel, nickel based alloys or any alloy containing more than 10% nickel due to the possibility of "phosphorus embrittlement”. Basically the phosphorus of the filler metal reacts with iron or steel or nickel to create a weakening condition known as phosphorus embrittlement. Washington Alloy Phos-Copper-Silver Brazing Alloys offer excellent corrosion resistance except when exposed to sulfurous atmospheres. Commonly used in the plumbing, heating and electrical industries.
HIGH SILVER BRAZING ALLOYS -Washington Alloy offers approximately 14 different high silver brazing alloys for joining most ferrous and nonferrous metals, except aluminum and magnesium. These High Silver Brazing Alloys are manufactured from only the highest purity raw materials, thereby eliminating undesirable trace elements which might otherwise interfere with brazing operations. All Washington Alloy High Silver Brazing Alloys are carefully formulated to provide maximum strength and corrosion resistance when joining stainless steel, copper alloys, nickel alloys, precious metals and just about any combination of these metals.CADMIUM VS. CADMIUM-FREEWashington Alloy offers both cadmium-free as well as cadmium-bearing alloys. The presence of cadmium gives the alloy a lower melting range and excellent fluidity. These alloys are mostly used in electrical components, petrochemical applications, brazing and joining of mild steel, tool steel, tungsten carbide tool tips and copper or nickel alloys. Although the cadmium-bearing alloys provide some advantages, they are potentially dangerous due to the toxicity of the fumes and are considered carcinogenic. For this reason Washington Alloy offers several cadmium-free alloys such as USA 35CF, USA 45CF, USA 56CF and USA 54CF. The cadmium-free alloys are primarily used in the fabrication of dairy or food handling equipment where the use of cadmium-bearing filler metals is prohibited.BARE OR FLUXCOATEDIn any brazing application, capillary action is of primary importance. To promote capillary action the joint surfaces must be cleaned of contaminants. In most cases this is done by dipping the filler metal into a jar of paste flux before applying to the joint and heat source. In many cases the use of paste flux can be avoided by using one of Washington Alloy flux-coated silver brazing rods such as USA 35% flux-coated, USA 45% or USA 45CF flux-coated and USA 56CF flux-coated. The extruded coating on these filler metals promotes "wetting-in” and capillary flow. The coating is flexible, low-fuming and has good shelf life.
Stay-Silv® White Flux
Description: All-purpose White Brazing Flux
An all-purpose, low-temperature flux for use in silver brazing. Use with most ferrous and non ferrous metals, not recommended on aluminum, magnesium, and titanium.
Typical Application: Use Stay-Silv White Brazing Flux on applications requiring normal heat. For use with silver brazing alloys on all metals other than aluminum, magnesium, or titanium.
Stay-Silv® Black Flux
Description: All-purpose Black Brazing Flux
An all-purpose, high-temperature flux for use in silver brazing. Formulated for applications where the work is subjected to rapid, localized heating. Particularly useful in applications where large amounts of refactory oxides may form, such as with stainless steel alloys. Use with stainless steel, carbide, heavy parts, prolonged heating cycles.
Typical Application: Use Stay-Silv Black Flux on heavy parts, where localized overheating may occur, and where parts are heated over a prolonged period. Stay-Silv Black Flux is also suggested when brazing stainless steel.
DescriptionFor repair of Zinc-based Metals, Pot Metal, White Metals and Aluminum.
Washington Alloy Alu-Zinc is a self-fluxing, low temperature joining alloy that can be used with oxy-acetylene or GTAW process, using argon as the shielding gas and AC (high frequency). It is excellent to use for new fabrication, maintenance or repair work. Flux is not necessary on accessible joints.
Common uses include: aluminum windows, doors, furniture, boats, engine heads, motor housings, power mowers, farm & dairy equipment, blocks and crankcases, vacuum cleaners, carburetors, gears & pumps, jigs & fixtures, dies & matchplates, trophies & ornaments, models & patterns, antique car parts and Kirksite dies.