NHF-800K

Specification
AWS Specification: N/A
JIS Specification: DR3C-700-B
Other Specification: DIN E6-60
Description
  • NHF-800K deposits a martensitic structure that contains C, Cr, and B as principal alloy elements 
  • Extremely high hardness caused by precipitation of chrome carbide and chrome boride
  • Most suitable for overlaying of the parts subject to heavy soil abrasion
TYPICAL CHEMICAL COMPOSITION OF ALL WELD METAL DEPOSITS (%):

C

Si

Mn

Cr

B W

0.91

1.88

1.32

3.87

0.52 2.54

 

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

Value

740 - 800

62 - 64

 

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

DIAMETER (mm)

3.2

4.0

5.0

6.0

LENGTH (mm)

350

400

400

450

Current Amp

90 - 130

120 - 180

170 - 230

210 - 280

Welding Positions: FLAT, OVERHEAD, HORIZONTAL
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.

  • Pump casings
  • Cutter knives
  • Equipment subject to heavy soil abrasion
  • Preheat over 200ºC and postheat at 500-600ºC
  • Crack tendency increases when used for over triple layer welding
  • Underlaying with low hydrogen type electrodes (N-7016 or N-7018) is required
  • Dry the electrodes at 150-200ºC for 30-60 minutes before use

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