N-7018-A1

Specification
AWS Specification: AWS A5.5 E7018-A1
JIS Specification: N/A
Other Specification: N/A
Description
  • N-7018-A1 is an iron powder low hydrogen type electrode for all-position welding containing 0.5% Mo in weld metal deposit
TYPICAL CHEMICAL COMPOSITION OF ALL WELD METAL DEPOSITS (%):

C

Si

Mn

P

S

Mo

0.08

0.54

0.78

0.015

0.010

0.56

 

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

590 (86)

680 (99)

28

620 ºC x 2 hrs.

 

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

DIAMETER (mm)

2.6

3.2

4.0

5.0

6.0

LENGTH (mm)

350

350

400

400

450

Current Amp

Flat

50 - 90

80 - 130

130 - 190

180 - 240

230 - 300

Vertical & Overhead

40 - 80

70 - 120

110 - 170

150 - 200

-

Welding Positions: ALL POSITIONS
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 0.5% Mo steel used for high temperature
  • high pressure boiler
  • Pressure piping and tubing
  • Pressure vessels
  • Chemical and oil refining industries
  • Dry the electrodes at 325-375°C for about one hour before use
  • Pre-heat at 250-350°C and post-heat at 730-760°C

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