Harris Products Group, BK636R, Phos-Copper Brazing Alloy, Low Melting Point, Self-Fluxing, 1-1/2 in Diameter Max

BLOCKADE® 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. Complies with the EU Reach & RoHS directive.

Features

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

• Weight: 1.02 lbs
• Phosphorus Content: 6.0 - 7.0%
• Tin Content: 6.0 - 7.0%
• Silicon Content: 0.01 - 0.40%
• Copper Content: Remainder
• Other Elements: 0.15%
• Solidus Temperature: 1178 F (637 C)
• Liquidus Temperature: 1247 F (674 C)
• Brazing Temperature Range: 1200 F - 1280 F (649 C - 693 C)
• Density: 0.293 lbs/cu.in
• Compliance: AWS A5.8 BCuP-9, ASME SFA 5.8 BCuP-9, ISO 17672 CuP 385, REACH, RoHS

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