Silver Braze 70
Silver Braze 70 Technical Data
Silver Braze 70 is commonly used in the silver-smithing trade and other applications where their silver-white color is advantageous in color matching, and the corrosion resistance of high-silver, low-zinc alloy is desired. Silver Braze 70 is often used in combination to perform sequential or step brazing of adjacent joints, to avoid re-melting the previously made joints. Because of the zinc content, it can be used to join iron and nickel-base alloys The low-zinc content also causes very little change in the brilliance of the enamel, when enameling after brazing.
Silver Braze 70 is an intermediate silver brazing filler metals with a slight tendency to liquate (separation into low and high melting constituents) if heated slowly through the melting range. When Silver Braze 70 is used for brazing silver base alloys, the re-melt temperature is raised by solution of silver in the brazing alloy. Conversely, the re-melt temperature of this brazing alloy is lowered by solution of copper when brazing copper base alloys. Flux is generally used.
Properties of Brazed Joints
The properties of a brazed joint are dependent upon numerous factors including base metal properties, joint design, metallurgical interaction between the base metal and the filler metal.
Silver Braze 70 conforms to American Welding Society (AWS) A5.8/A5.8M BAg-10
Wire, strip, engineered preforms, specialty preforms per customer specification, powder and paste.
- AWS: BAg-10
- Lucas: Silvaloy 700
- Morgan/Wesgo: Palcusil-10
- PI: Silver Braze 70
- UNS: P07700
- Brazing Temperature Range High: 1460 F / 793 C
- Brazing Temperature Range Low: 1410 F / 766 C
- Liquidus: 1360 F / 738 C
- Solidus: 1275 F / 691 C
- Ag: 70%
- Cu: 20%
- Zn: 10%
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