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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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