BLOCKADE® Phos-Copper Flux-Coated Brazing Alloy

BLOCKADE® flux-coated phos-copper brazing filler metal has an innovative composition that provides the ability to form a large shoulder or cap at the braze connection. It is a low melting temperature alloy that is very fluid and fast flowing. Best for tight fitting connections under two inches in diameter. Ideal for copper-to-brass applications such as solenoid valves, ball valves, Schrader valves and distributors. BLOCKADE® is self-fluxing on copper. Its lower melting temperature makes it an excellent choice for brass. The flux coating on the wire eliminates the need for manual flux application.

Features

• A low cost alternative to silver bearing filler metals
• It has a narrow melting range, but its flow characteristics allow operators to “cap” or "build-up" around the finished joint
• Low melting point reduces the likelihood of overheating the brass
• Often selected to replace silver brazing filler metals for these applications
• Does not contain silver, so significant cost reductions are available
• Not recommended for brazing steel or other ferrous alloys
• Phosphorus content will form low ductility intermetallic with base metal
• Phosphorus containing brazing alloys should not be used if the braze is exposed to sulfur or sulfur compounds in service
• For brazing copper or brass, as the lower brazing temperature makes it an excellent replacement for many silver-bearing BCuP alloys