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NHF-13H
AWS Specification: NONE
JIS Specification:
Other Specification:

I. APPLICATIONS: 

Hard surfacing of punches, hot forging dies, screw conveyors.

II. DESCRIPTION:

NHF-13H is a lime type electrode in which Mo is added to the base of 13% Cr steel. The weld metal shows martensitic structure, it has excellent resistance to heat, corrosion and abrasion, also has good crack resistibility. And its usability is good and rich surfacing welds can be obtained. It is designed to prevent the dilution from base metal because of shallow welding penetration. Therefore, it provides weld metal of stable hardness of first-layer welding. But machining as welded condition is impossible.

III. NOTES ON USAGE:

  • It is effective to preheat at 200°C to avoid cracking.

  • Dry the electrodes at 300-350°C for 30-60 minutes before use.

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

 

C

Si

Mn

Cr

Mo

0.28

0.6

0.46

12.68

0.48

V. HARDNESS OF WELD METAL: 52-54 HRC (540-580 Hv)

VI. WELDING POSITIONS: FLAT, FILLET, VERTICAL UP

VII. SIZES AVAILABLE AND RECOMMENDED CURRENTS (AC or DC+ ):

 

Size

Dia.

3.2

4.0

5.0

(mm)

Length

350

350

350

Current Range

80-120

110-150

140-200

 

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.