Washington Alloy, TCU SB/09, Filler Metal, 1/4 in; Silicon Bronze ERCuSi-A, 50,000 psi, 3% Si

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
• Size: 1/4 in.
• Alloy / Product Title: Silicon Bronze ERCuSi-A
• AWS Specification: AWS A5.27 RCuSi-A, ANSI/AWS A5.7, ASME SFA 5.7 ERCuSi-A
• Material: Copper, Silicon Bronze
• Silicon Content: 3%
• Other Elements: Manganese, Tin, Zinc
• Elongation: 65%
• Tensile Strength: 50,000 psi
• Brinell Hardness: 80-100
• Density: 0.308 lbs/in3
• Electrical Conductivity: 7.0% IACS
• Thermal Conductivity: 21 Btu
• Solidus Temperature: 1780 F
• Liquidus Temperature: 1880 F
• Maximum Zinc Content: 1.00%
• Maximum Manganese Content: 1.50%
• Maximum Tin Content: 1.00%
• Maximum Iron Content: 0.50%
• Maximum Aluminum Content: 0.01%
• Maximum Lead Content: 0.02%
• Welding Types: MIG, TIG, Oxyacetylene

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