SHIELD METAL ARC WELDING (SMAW)

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NHF-73G2

Specification
AWS Specification: N/A
JIS Specification: N/A
Other Specification: N/A
Description
  • NHF-73G2 is a low-hydrogen electrode for high-temperature resistant surfacings on hot work steels exposed to impact, compression, and abrasion
  • Great hardness and toughness
  • High temperature resistant
TYPICAL CHEMICAL COMPOSITION OF ALL WELD METAL DEPOSITS (%):

C

Si

Mn

Cr

Mo

0.35

0.55

1.35

7.10

2.55

 

HARDNESS OF WELD METAL:
Hardness
Vickers (Hv)
Rockwell (HRC)

As Welded

600 - 650

55 - 58
Soft Annealed 50 25
Hardened 640 - 740 56 - 60

 

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

DIAMETER (mm)

3.2

4.0

5.0

LENGTH (mm)

350

350

350

Current Amp

80 - 110

100 - 140

130 - 170

 

Welding Positions: FLAT, FILLET, VERTICAL UP
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.

  • Surfacing on machine components and tools exposed to abrasion and compression with moderate impact loads in operating temperatures up to 550ºC
  • Dead centers
  • Tongs
  • Valves
  • Hot shear blades
  • Extrusion press pistons
  • Dies
  • Cold and hot working tools
  • Bigger workpieces must be preheated to 400-600ºC and kept at this temperature during welding
  • A lower preheat temperature is enough for smaller work, because it is heated adequately by the arc
  • Certain jobs on smaller workpieces may even be welded without preheating
  • Slowly cool in an oven or under asbestos after welding
  • The weld can be machined only by grinding after it cools
  • If other cutting operations have to be performed on a build-up weld, annealing is necessary

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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