Washington Alloy, TCU SB 05, Welding Filler Metal, Silicon Bronze ERCuSi-A; 0.030 in; 3% Si; 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.

• Size: 0.030 in.
• Weight: 10 lb
• Material: Copper base, Silicon Bronze
• Tensile Strength: 50,000 psi
• Elongation: 65%
• 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
• Alloy/Product Title: Silicon Bronze ERCuSi-A
• Standard: AWS A5.27 RCuSi-A, ANSI/AWS A5.7 ERCuSi-A, ASME SFA 5.7 ERCuSi-A
• Silicon Content: 3%
• Manganese Content: 1.5% max
• Tin Content: 1.0% max
• Zinc Content: 1.0% max
• Copper Content: Remainder

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