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SJF-711
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Specification£º
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GB/T10045 E501T-1
JIS Z3313 YFW-C50DR
AWS A5.20 E71T-1
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Approved by£º
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ABS¡¢NK¡¢GL¡¢LR¡¢KR¡¢DNV¡¢BV¡¢CCS¡¢RINA¡¢CE¡¢CWB
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Features and Applications
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SJF-711 is flux cored wire of gas shielding arc welding for welding of mild steel and 490MPa high tensile steels. It has deep Penetration use in DC(+), It can be used for the Situation of high impact ductility requirement, It has good weldability, few fume, mellow and stable dldctric arc, whole slag cover and easily to clean, X-ray check well. It is suitable for welding in shipbuilding, ocean drilling platform, storage tank, steel structure, boiler, Pressure Vessel, steel pipeline and heavy machinery.
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Points for Attention
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¡¤keep the shielding gas flow at 20-25/min.
¡¤Ensure the purity of shielding gas of CO2 must be above 99.98%.
¡¤Rid the welded part of rusty layer, damp, oil stain and dust, etc.
¡¤Always keep torch nozzle clean and TIP in good condition.
¡¤Ensure each weld pass temperature below 150¡æ for multi-run welding.
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Chemical Compositions of deposited metal (wt%):(Shielding gas:CO2)
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C
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Mn
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Si
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P
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S
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Requirement
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¡Ü0.18
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¡Ü1.75
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¡Ü0.90
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¡Ü0.030
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¡Ü0.030
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Example
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0.05
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1.35
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0.52
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0.012
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0.010
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Mechanical Properties of Weld Pass:(Shielding gas:CO2)
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Yield Strength MPa
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Tensile Strength MPa
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Elongation %
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Impact Value -20¡æJ
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Requirement
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¡Ý400
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¡Ý480
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¡Ý22
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¡Ý27
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Example
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470
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560
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28
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128
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Mechanical Properties of Weld Pass:(Shielding gas:CO2)
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Diameter£¨mm£©
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1.2
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1.4
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1.6
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Current£¨A£©
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120-300
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150-380
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180-430
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Voltage£¨v£©
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23-30
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24-36
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25-40
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Electrode extension£¨mm£©
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15-25
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15-25
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20-30
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Shield gas flow£¨l/min£©
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20-25
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20-25
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20-25
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Flux cored weld wire