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NT-Cu
AWS Specification: AWS A5.7 ER Cu
JIS Specification:

none

Other Specification:

FOR COPPER ALLOY

I. APPLICATIONS:

Typical applications are billet molds, steel mill electrode holders, conductor rolls, heater elements, bus bars, copper connectors and copper sculptures

II. DESCRIPTION:

NT-Cu is a deoxidized copper alloy developed to provide dense, high

quality deposits with relatively high electrical conductivity for use in

joining and overlay with the inert-gas processes.

NT-Cu filler rod are used primarily to fabricate deoxidized copper and repair weld copper castings with the gas metal-arc and gas tungsten-arc processes. It may also be used to weld galvanized steel and deoxidized copper to mild steel where high strength joints are not required.

NT-Cu filler rod are used to overlay surfaces to resist corrosion.

Unlike competitive sources of deoxidized copper wire, NT-Cu is

produced completely from virgin copper. This eliminates the

undesirable residual impurities which are found in recycled copper

and which drastically reduce conductivity and overall weld deposit

quality. In addition, a final scalping operation removes any trace of

scale from the wire surface. These “extra measure” efforts assure

trouble-free wire feeding efficiency and highest quality weld deposits.

 

III. TYPICAL CHEMICAL COMPOSITION OF WELD METAL

(%):

 

Al

Si

Mn

Sn

P

Others

98 max

0.50 max

0.50 max

1.0 max

0.15 max

0.50 max

IV. TYPICAL MECHANICAL PROPERTIES OF WELD METAL :

Tensile Strength N/mm2 (Ksi)

Yield Point

N/mm2 (Ksi)

Elongation %

As welded Brinnel Hardness

200 (29)

55 (8)

29

54 HB

V. TIG AVAILABLE SIZES:

Dia.(mm)

2.4

3.2

4.0

Length (mm)

1000

1000

1000

Unit wt./packing (kgs.)

5

5

5

 

TEST RESULT

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.