COPPER ALLOY SILICON BRONZE BRAZING WELDING WIRE
USD $1 - $1,000 /Kilogram
Min.Order:400 Kilograms
Anhui Huazhong Welding Material Manufacturing Co., Ltd.
Copper Alloy Silicon Bronze Brazing Wire
♦ INTRODUCTION
HUAZHONG HZ-CuSi Silicon Bronze is a copper based filler metal containing 3% silicon and small amounts ofmanganese, tin and zinc. Primarily used for MIG, TIG and oxyacetylene welding of copper, copper-silicon andcopper-zinc base metals to themselves and to steel. Excellent for plain or galvanized steel sheet metal as well asother coated steels. 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.
♦ APPLICATIONS
- MIG, TIG and oxyacetylene welding of copper, copper-silicon and copper-zinc base metals to themselves and to steel.
- Surfacing areas subject to corrosion.
♦ CHEMICAL COMPOSITION(%)
Zinc:1.0
Tin:1.0
Manganese:1.5
Iron:0.50
Silicon:2.8-4.0
Aluminum:0.01
Lead:0.02
Copper:Remainder
Others:0.50
Note: Copper contains Silver. All values are maximum percentage, unless shown in range.
♦ PHYSICAL and MECHANICAL PROPERTIES
Melting Point: 1018°C (1866°F)
Solidification:1040°C (1904°F)
Density at 20°C: 0.308 lbs./in3
Electrical Conductivity at 20°C: 7.0 % IASC (annealed)
Thermal Conductivity at 20°C: 21 Btu
Tensile Strength: 50, 000 psi, min
Elongation, in 2 in.: 65 %
Brinell Hardness: 80-100
♦ SPECIFICATIONS MEET or EXCEED:
- AWS A5.7 ERCuSi-A
- ASME SFA5.7
- QQ-R-571C
- MIL-R-19631B Type MIL-RCuSi-A
- MIL-E-23765/3 (MIL-CuSi)
Copper and its alloys require a relatively high heat input with shortened welding time. Higher preheat temperatures and faster welding rates than for steel are necessary.