Silicon bronze brazing wire copper alloy manufacturing

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.

Anhui Huazhong Welding Material Manufacturing Co., Ltd is established in 2004, and located in Hefei——the central City of Anhui Province. We are specialized good in manufacturing and producing brazing materials. Our main products include silver-based brazing filler metal, copper-based brazing filler metal, aluminum-based brazing filler metal and associated brazing flux, flux-cored welding wire etc. Our brazing flux products included: silver welding paste, silver welding powder, copper welding paste, copper welding powder, aluminum welding paste, aluminum welding powder, spot welding paste (water), etc. The available shape of brazing alloys are rod, ring, sheet, strip, wire etc .

After-sale Service Warranty

1)If any quality problems such as manufacture, function or procedure occur within the guarantee period, We shall take responsibility and bear some theconomic losses.

2)If any quality problems such as occur within the guarantee period, we shall provide on line service after receive the buyer’s notice in 24 hours .

3)We will provide a lifetime favorable price to the buyers .