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Home » Products » Welding flux » HJ250G

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HJ250G

Model:
HJ250G
Brand:
Mighty

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Product Description

HJ250G Fused Flux for S.A. Welding

Standard conforming: GB/T17854-1999 F308-H0Cr21Ni10
Equivalent to : AWS A5.23 F7A0-EH14
Description and Applications
HJ250G is a type of fused with low-manganese, medium-silicon, medium-fluorine content, light yellow to light green pumiceous grains. Its grain size is 2.0-0.45mm (10-40 meshes). Flux HJ250G is suitable for use with DC power, filler wires connect with Positive Electrode. With excellent technological properties, the flux provides very good weld bead appearance and excellent slag removal.
Flux for welding of low alloy hard steel (15MnV, 14MnMoV, 18MnMoNb) in combination with appropriate SAW wires such as H08MnMoA, H08Mn2MoA, H08Mn2MoVA, etc. Combined with wire of H08Mn2MoVA, the flux being applied to -70℃ cryogenic steel of 09Mn2V, providing a good low temperature impact toughness performance.
Main Constituents(%)

SiO2	MnO	CaF2	Al2O3	MgO	CaO	R2O	FeO	S	p
18-22	2-4	20-24	24-28	18-22	3-7	≦3.0	≦1.5	≦0.06	≦0.08

Mechanical properties of Deposited Metal

Test Item	Tensile Strength Rm(MPa)	Yield Strength Reh(MPa)	Elongation (A%)	AKV(J)
				-20℃
Guaranteed Value	480-660	≥400	≥22	≥27

Packing: 25kg per kraft paper bag or 1000kg per jumbo bag.

Remarks:
1. Redry the flux at 300-350℃ for 2hours before welding.
2. Impurities such as rust, greasy dirt, moisture, ect.should be cleared from the welding area.

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