SHIELD METAL ARC WELDING (SMAW)

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N-Cu

Specification
AWS Specification: AWS A5.6 ECu
JIS Specification: N/A
Other Specification: N/A
Description
  • N-Cu is a special electrode used for welding pure copper
  • Designed for use without preheating and shows deep penetration
  • Produces high purity copper weld deposits
  • Corrosion resistant
  • Excellent electrical conductivity
  • Perfect color to match with copper
TYPICAL CHEMICAL COMPOSITION OF ALL WELD METAL DEPOSITS (%):

Cu

Si

Sn

P

Mn

 Others

98.00 min.

0.50 max.

1.00 max.

0.15 max.

0.50 max.

 0.50 max.

 

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

220 (32)

32

50 - 55

 

SIZE AND RECOMMENDED CURRENT RANGE: AC, DC (+)

DIAMETER (mm)

3.2

4.0

5.0

LENGTH (mm)

350

350

350

Current Amp

80 - 130

130 - 180

180 - 230

Welding Positions: FLAT, VERTICAL, 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.

  • Welding of pure copper
  • Suitable for repairing welding of the parts that requires electric conductivity, such as repairing welding of electrode holder, flange, etc.
  • Commonly used to overlay steel or to join heavier sections of copper to steel
  • Preheat thicker sections to 400 - 600ºC
  • Use a larger electrode for thicker sections and maintain a short arc
  • Stress and distortion can be avoided by peening each deposit between passes
  • Allow the part to cool slowly before removing slag with a chipping hammer and wire brush

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