NHF-300

Specification

AWS Specification: N/A
JIS Specification: DF2A-300-B
Other Specification: DIN E1-300

Description

Application

Remarks

  • Preheating is not necessary
  • Recommended to preheat at 150ºC and over, if large weldments are required to surfacing
  • In the case of high cooling rate, preheat or postheat to avoid difficulty of machining caused by hardening
  • Dry the electrodes at 300-350ºC for 30~60 minutes before use
  • Machining is possible in general
  • Hardness increases by quenching after machining

    • Technical Data

    TYPICAL CHEMICAL COMPOSITION OF ALL WELD METAL DEPOSITS (%):

    C

    Si

    Mn

    Cr

    0.08

    0.48

    0.80

    2.16

     

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

    Value

    255 - 280

    23 - 27

     

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

    DIAMETER (mm)

    3.2

    4.0

    5.0

    LENGTH (mm)

    350

    350

    350

    Current Amp

    90 - 130

    120 

    170 - 220

    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.