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In accordance with GB/T5293-1999 F4A2-H08A
Equivalent to AWS F7A0-EL8
DESCRIPTION: SJ301 is a bonded type Si-Ca neutral flux with ball form granual of browncolor about 10-60 mesh in size. It can be used on AC or DC powersource and also can be used large current. Its unique features include stable arc, easy slag removal and smooth bead appearance.
In combination with H08A, H10Mn2 wires, this flux is suitable for welding of structures boilers, pipelines.
GUIDELINES FOR USAGE:
1. Dry the flux at 300-350 for two hours before use
2. Completely remove rust, oil and dirt from the groove surface prior to welding.
TYPICAL FLUX COMPOSITION RANGE(%)
SiO2+TiO2 CaO+MGO Al2O3+MnO CaF2 Others
35-45 20-35 20-35 5-15 10
TYPICAL MECHANCAL PROPERTIES OF GB/T5293-1999. F4A2-H08A
TEST ITEM b MPa s MPa 5 % Akv(J) -40
Guarantee Value 415-550 ≥ 330 ≥ 22 ≥ 27
Test value 516 397 32 100, 90, 130