Sil-Fos 15 is the preferred alloy for general copper-copper brazing; the phosphorous in the Sil-Fos family serves as a fluxing agent, no flux is recommended. Sil-Fos 15 is the best alloy to use when joining metals where close fit-ups cannot be maintained and is well suited for use in refrigeration applications.

Features & Benefits

• Highest joint ductility of entire Sil-Fos family
• Fast flow
• Made in USA

Specifications

• Filler Metal: 15 Percent Silver, 80 Percent Copper, 5 Percent Phosphorous
• Melting Temperature: 1190 Deg F (Solidus)
• Size 0.125 Inch x 0.05 Inch x 20 Inch
• Physical State Solid
• Color Gray
• Number of Rods 28
• Flow Point Temperature Rating 1300 Deg F (Liquid)
• Brazing Temperature Rating 1300 to 1500 Deg F
• Specific Gravity 8.38
• Density 0.303 Pound per Cubic Inch
• Electrical Resistivity 17.4 Microhm-CM
• Application HVAC/R Refrigerant, Air Conditioning Coil, Evaporator Coil

• 61035 - Brazing Alloy, Stay-Silv 15% 1# .050 1/8"x28 Stick