Washington Alloy, TCU SB 17, Welding Filler Metal, 0.045 in, Copper Silicon Bronze, 3% Silicon, 50,000 psi

Washington Alloy Silicon Bronze is a copper-based filler metal containing 3% silicon and small amounts of manganese, tin, and zinc. Primarily used for MIG, TIG, and oxyacetylene welding of copper, copper-silicon, and copper-zinc base metals to themselves and to steel. The oxyacetylene gas flame should be slightly oxidizing. Keep the weld puddle small in order to promote fast solidification and minimize cracking. A high boric acid flux should be used both before and during welding. Preheating is NOT recommended.

• Compliance: AWS A5.27 RcuSi-A, ANSI/AWS A5.7 ERCuSi-A, ASME SFA 5.7 ERCuSi-A
• Weight: 30 lb
• Wire Diameter: 0.045 in.
• Material: Copper, Silicon Bronze
• Silicon Content: 3%
• Additional Elements: Manganese, Tin, Zinc
• Electrical Conductivity: 7.0% IACS
• Solidus Temperature: 1780 F
• Liquidus Temperature: 1880 F
• Tensile Strength: 50,000 psi
• Elongation: 65%
• Brinell Hardness: 80-100
• Density: 0.308 lbs/in3
• Thermal Conductivity: 21 Btu

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