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NIHONWELD N-8018-G
AWS Specification: AWS A5.5 E8018-G
JIS Specification:

D5316

Other Specification:

KS E5316

I. APPLICATIONS:

Welding of 55kgf/mm2 class high tensile strength steel for ships, bridges, buildings, and boilers.

II. DESCRIPTIONS:

N-8018G is an iron powder low hydrogen type electrode, and provides good usability with direct current applications in all-positions. The weld metal has good crack resistability and X-ray soundness. Also it is suitable for multi-layer fillet welding in large leg length.

III. NOTES ON USAGE:

  • Dry the electrodes at 300-350ºC for one hour before use.

  • Take the backstep method or strike the arc on a small steel plate prepared to prevent blowholes at the arc starting.

  • Keep the arc as short as possible.

IV. TYPICAL CHEMICAL COMPOSITION OF DEPOSITED METAL (%):

 

C

Si

Mn

P

S

Ni

0.06

0.54

1.35

0.012

0.010

0.70

V. TYPICAL MECHANICAL PROPERTIES OF DEPOSITED METAL:

 

Yield Point

N/mm2 (ksi)

Tensile Strength

N/mm2 (ksi)

Elongation

%

Impact Value

°C, J (°F, Ft-Lbs)

540 (78)

620 (90)

28

-29°, 110 (-20°, 81)

VI. WELDING POSITIONS: ALL POSITIONS EXCEPT VERTICAL DOWN

VII. SIZES & RECOMMENDED CURRENT RANGE: AC or DC (+)

 

 

Dia. x length (mm)

2.5 x 350

3.2 x 350

4.0 x 400

5.0 x 400

Current Range (Amp)

Flat

55 - 85

90 - 130

130 - 180

180 - 240

Vertical, Overhead

50 - 80

90 - 115

110 - 170

150 - 200

 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.