SHIELD METAL ARC WELDING (SMAW)

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N-CuSi

Specification
AWS Specification: AWS A5.6 ECuSi
JIS Specification: N/A
Other Specification: N/A
Description
  • N-CuSi performs well in any position utilizing AC as well as DC machines
  • Features weld deposits that are strong, ductile, and crack resistant even welding on dirty, oily, burned cast ,or maliable pars
  • Can be used as a welding or brazing electrode due to high silicon content 
TYPICAL CHEMICAL COMPOSITION OF ALL WELD METAL DEPOSITS (%):

Cu

Fe

Si

Sn

Mn

 Pb Others

Bal.

0.50 max

2.40 - 4.0

1.50 max

1.50 max

 0.02 max 0.50 max

 

TYPICAL MECHANICAL PROPERTIES OF ALL WELD METAL DEPOSITS:
Yield Point
N/mm2 (KSI)
 
Tensile Strength
N/mm2 (KSI)
 
Elongation
%
 
Hardness HB
 

250 (36)

420 (61)

25

80 - 100

 

SIZE AND RECOMMENDED CURRENT RANGE: DC (+)

DIAMETER (mm)

3.2

4.0

5.0

LENGTH (mm)

350

350

350

Current Amp

70 - 110

100 - 150 

140 - 180

Welding Positions: FLAT, FILLET, VERITCAL UP, HORIZONTAL, OVERHEAD
Approvals: N/A

NOTE:

The information contained or otherwise referenced herein is presented only as “typical” without guarantee or warranty, and Industrial Welding Corporation expressly disclaims any liability incurred from any reliance thereon. Typical data and test results for mechanical properties, deposit, or electrode composition and other properties were obtained from a weld produced and tested according to prescribed standards and should not be assumed to be the expected results in a particular application or weldment. Actual results will vary depending on many factors, including, but not limited to, weld procedure, plate chemistry and temperature, weldment design, and fabrication methods. Users are cautioned to confirm by qualification testing, or other appropriate means, the suitability of any welding consumable and procedure before use in the intended application.

  • For welding or building-up silicon bronze as other copper alloys
  • Applications include welding cast iron to steel where the part is exposed to corrosives
  • Commonly used on bronze impellers, bronze wear plates, hydraulic piston overlays, track wheels, gears, sprockets, and farm implements
  • Should be preheated up to 260ºC depending on the thickness of the part
  • Thin sections do not require preheating
  • Maintain a medium arc length and deposit stringer beads in groove or overlay welding
  • Use weave beads for rapid overlays, large areas, and for ferrous metals
  • Peen the weld deposit and remove slag between passes

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