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                                              SJ-49  
                                              Specification£º GB/T8110  ER49-1
                                                GB/T14957 H08Mn2SiA
                                               Features and Applications    
                                              Suitable for welding of mild steels and 490Mpa high tensile steels. It is characterized by excellent welding performance when applied to all-position back welding.

                                               Points for Attention    
                                              The purity of argon shielding gas must be above 99.997% and gas flow must be properly controlled. When welded under the operating current of 100~200Amp, the gas flow is supposed to be at about 7~12L/min; under the operating current of 200~300Amp the gas flow shoule be controlled at 12~15L/min.
                                              During welding appropriate windproof measures must be taken, otherwise shielding gas will be easily exposed to wind so that weld bead will worsen, giving rise to gas porosity.
                                              Choose a suitable gas-collecting porcelain cup and properly control the electrode extension of tungsten electrode.
                                              Rust layers, oil stain and dust must be fully removed from parent metal's surface.

                                                 An example of chemical Composition of Weld Wire(wt%)
                                              C Mn Si P S
                                              0.070

                                              1.90

                                              0.78 0.014 0.012

                                                 An example of mechanical Properties of Weld Metal
                                              Yield Strength
                                              MPa
                                              Tensile Strength
                                              MPa
                                              Elongation
                                              %
                                              Impact Value
                                              -29¡æ J
                                              500 585 28 80

                                                 Package Size:
                                              Wire Diameter£¨mm£© 1.6£¬2.0£¬2.4£¬2.6£¬3.2£¬4.0
                                              Length£¨mm£© 1000
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