Washington Alloy, TCU SB 02, Silicon Bronze Filler Metal, 0.023 in, 3% Silicon, 50,000 psi, AWS A5.27 RcuSi-A

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.

• Size: 0.023 in.
• Material: Copper, Silicon, Manganese, Tin, Zinc
• Silicon Content: 3%
• Manganese Content: 1.5%
• Tin Content: 1.0%
• Zinc Content: 1.0%
• Tensile Strength: 50,000 psi
• Elongation: 65%
• Brinell Hardness: 80-100
• Density: 0.308 lbs/in3
• Thermal Conductivity: 21 Btu
• Electrical Conductivity: 7.0% IACS
• Solidus Temperature: 1780 F
• Liquidus Temperature: 1880 F
• AWS Specification: AWS A5.27 RcuSi-A

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