HH62173 - Silvalloy 35 Silver Brazing Wire 1/16" 1kg Coil (Cadmium-Free)

Silvalloy 35 Cadmium-Free Silver Brazing Wire (1/16" - 1kg Coil)

The Silvalloy 35 is a premium, cadmium-free silver brazing alloy designed for applications requiring high joint strength and safety compliance. Manufactured by Lucas-Milhaupt, this alloy contains 35% silver, balanced with copper and zinc, making it an excellent general-purpose filler metal. It is widely recognized in the industry under the AWS classification BAg-35. This specific product comes in a 1 kg coil with a wire diameter of 1/16 inch (1.6mm), suitable for continuous brazing operations or cutting to custom lengths.

One of the primary advantages of Silvalloy 35 is its cadmium-free composition. Historically, cadmium was used to lower melting temperatures, but its toxicity poses significant health risks. Silvalloy 35 eliminates this hazard, making it a safe choice for food processing equipment, medical devices, and general HVAC/R installations where operator safety is paramount. Despite lacking cadmium, it maintains excellent flow characteristics and wetting properties on ferrous and non-ferrous metals.

The alloy features a melting range of 1125°F (solidus) to 1295°F (liquidus). This 170°F plastic range is particularly beneficial when brazing joints with slightly loose fit-ups, as the alloy can bridge gaps more effectively than eutectic alloys. It produces fillets that are both ductile and strong, ensuring the longevity of the assembly under vibration or thermal stress.

Key Applications

• HVAC/R: Joining copper tubing to brass or steel components.
• Food & Beverage: Fabrication of stainless steel processing equipment (Cd-free).
• General Fabrication: Brazing dissimilar metals such as carbon steel to stainless steel.
• Electrical: Joining bus bars and contacts where moderate conductivity is required.

For optimal results, Silvalloy 35 should be used with a high-quality white or black brazing flux, depending on the base metals and heating cycle duration. The 1kg coil format is ideal for workshops and production lines looking to minimize downtime associated with changing smaller spools or rod packages.