NHF-30CRS

Specification

AWS Specification: N/A
JIS Specification: DFCrA-700B
Other Specification: N/A

Description

 

Application

Remarks

  • Pre-heat at 150ºC and over in general
  • In case of multi-layer build-up welding and welding mother plates with hardening property, under-lay with low hydrogen type electrodes for mild steel
  • ? Dry the electrodes at 300-350ºC for 30-60 minutes before use
  • Clean weld area properly before welding
  • Oscillation of the electrode with an amplitude up to 3-4 times the nominal diameter results in very regular and smooth beads
  • The full properties of the alloy is obtainable in two layer deposits
  • Technical Data

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

    C

    Si

    Mn

    Cr

    Nb

     

    6.04

    1.50

    0.85

    23.00

    6.81

     

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

    Value

    670 - 760

    59 - 63

     

    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, 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.