SHIELD METAL ARC WELDING (SMAW)

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N-NiMo-7

Specification
AWS Specification: AWS ENiMo-7
JIS Specification: 
Other Specification: 
Description
  • N-NiMo-7 is a nickel-molybdenum flux-coated electrode developed specifically for welding similar base metals, such as Hastelloy® B-2 to itself or to steel, and nickel alloys
  • Excellent resistance to pitting and stress corrosion cracking commonly caused by acids due to controlled level of carbon, iron, cobalt, nickel, and molybdenum
TYPICAL CHEMICAL COMPOSITION OF ALL WELD METAL DEPOSITS (%):

C

Si

Mn

Fe

Ni

 Mo Nb & Ta  

0.01

0.12

0.90

1.20

Bal.

 28.00 0.90  

 

TYPICAL MECHANICAL PROPERTIES OF ALL WELD METAL DEPOSITS:
Tensile Strength
N/mm2 (KSI)
 
Elongation
%
Hardness
757 (110)

27

98

 

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

DIAMETER (mm)

3.2

4.0

5.0

LENGTH (mm)

350

350

350

Current Amp

Flat

70 - 110

100 - 150

130 - 180

Vertical & Overhead

65 - 105

95 - 140

-

Welding Positions: FLAT, FILLET, VERTICAL 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.

  • Chemical processing industries on parts exposed to all concentrations and temperatures of hydrochloric acid
  • Parts subject to sulphuric, phosphoric, and acetic acids
  • Should not be used in the presence of cupric or ferric salts 
  • Weldability is the same as austenitic stainless steel
  • Keep the interlayer temperature under 100ºC and cool it as fast as possible
  • Keep the welding current as low as possible
  • Dry the electrodes at 150-200ºC for 30-60 minutes before use

ABOUT US

For over 40 years, NIHONWELD has been the market leader of high quality welding electrodes in both the domestic and international markets. With Nihonweld, you will WELD WITH COMPLETE CONFIDENCE.
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