Washington Alloy, TCU SB/03, Filler Metal, Silicon Bronze ERCuSi-A, 0.045 in, 36 in, 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.

• Weight: 10 lb
• Alloy: Silicon Bronze ERCuSi-A
• Size: 0.045 in.
• Length: 36 in.
• Material Composition: Copper, Silicon, Manganese, Tin, Zinc
• Tensile Strength: 50,000 psi
• Elongation: 65%
• Brinell Hardness: 80-100
• Electrical Conductivity: 7.0% IACS
• Density: 0.308 lbs/in3
• Thermal Conductivity: 21 Btu
• Silicon Range: 2.8-4.0%
• Zinc Max: 1.00%
• Manganese Max: 1.50%
• Iron Max: 0.50%
• Aluminum Max: 0.01%
• Lead Max: 0.02%
• Tin Max: 1.00%
• Solidus Temperature: 1780 F
• Liquidus Temperature: 1880 F

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