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Wolverine silvaloy 15% silver solder brazing alloy weld
WOLVERINE SILVALOY 15% SILVER SOLDER BRAZING ALLOY WELD
WOLVERINE EXCEL SILVALOY 15 0.050x1/8x20 (28 Sticks, BCuP-5)
Silvaloy 15 is used for the brazing of copper and copper alloys, brass and bronze. It can also be used on silver, tungsten and molybdenum. It is very effective for joining pipe and tubing and is widely used for electrical work. Silvaloy 15 should not be used on ferrous metals or copper alloys containing more than 10% nickel because of phosphorous embrittlement due to reactions with iron or nickel. Of the phos-copper brazing filler metals, Silvaloy 15 has more ductility and better electrical conductivity than the lower silver content phos-coppers. It has good flow and wetting properties on copper, brass and bronze. Of the phos-copper filler metals, Silvaloy 15 has the most “sluggish†flow characteristics. This enables it to fill gaps better. The recommended joint clearances are between 0.001: and 0.005â€. Melting of Silvaloy 15 is virtually complete at 1300°F (704°C) even though the liquidus is not yet reached. Best results are obtained when brazing slightly above this temperature.
Generally, the joint strength using Silvaloy 15 will surpass the strengths of the base metals. Strength is a function of the base metals being joined, type of joint, design of joint, joint clearances and brazing procedures. The recommended maximum operating temperatures for Silvaloy 15 are 300°F (continuous service) and 400°F (short time service). Corrosion resistance is satisfactory except when the joint is in contact with sulfurous atmosphere (especially at elevated temperatures).
The phosphorus content of Silvaloy 15 acts as fluxing agent and no flux is necessary when brazing copper to copper joints. However, when used with a copper alloy or one of the other brazeable metals, a brazing flux must be used to promote wetting, bonding and flow throughout the joint, The flux used must be active within the required temperature range of Silvaloy 15 and active throughout the heating cycle. The flow point of Silvaloy 15 is 1300°F (704°C).
Total other elements 0.15% Max.
Brazing Range 1300-1500°F (704-816°C)
Electrical Conductivity (% IACS) 9.9
Electrical Resistivity (Michrohm-cm) 17.4
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