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    LJ-HJ251
    Jinan Jincai Welding Material Co. , Ltd.

    Conforming to:GB/T12470    S490AAS-SU34

     Description: HJ 251 is defined as fused type fluxes with low manganese medium silicate and medium fluorine, color in light yellow to light green, with jaded stone form granules 10-60 meshes in size. They are suitable for use with D.C. power source, filler-wire will be connected to electrode positive (EP) good welding technological behavior.

    Field of application: Fluxes match Cr-Mo steel filler-wire being for welding of pealite resistant-heat steel, for instance, turbine rotors and of other low alloy steel.

    Typical compositions of fluxes in: (%)

    SiO2+Al2O3

    CaF2+CaO+MgO

    S

    P

    36-45

    40-53

    ≤0.05

    ≤0.08

    Mechanical properties of deposited metal: (GB/T12470  F48A0-H10Mn2)

    Test Item

     ó s (Mpa)

     ó b (Mpa)

      δ 5( %)

     Akv (J) 0℃

    Guaranteed Value

    ≥400

    490-660

    ≥20

    ≥27

    Test Value

    414

    530

    30

    115

    Remarks:
        1.Before welding, fluxes need to be baked two(2) hours at 300-350℃.
        2.Removal of rust, oil, dirt, water, impurities etc in welding-areas.

     

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