E43XX welding electrodes are often used in welding of steel structures, of which 43 is indicated
Simply put, 43 means the tensile strength of deposited metal, 43Kgf/mm2, that is, 420MPa.
1) the brand of welding rodTaking structural steel as an example: designation. JXXX, J for structural steel welding rod, third figures, representing the type of leather, welding current requirements, first, second number: on behalf of weld metal tensile strength.2) model of welding rodThe type of welding rod is determined by the relevant national standards and international standards. EXXX, structural steel, for example, model establishment method for the letter "E" said electrode, first, second said that the minimum tensile strength of weld metal, third digit electrode welding position, the third, fourth digits of the welding current type and type of coating.For example, the model is E4303 brand, that is, J422 J representative of institutions, steel electrode 42, said tensile strength 2, indicating the skin type
According to the GB / T5117-1995 carbon electrode national standard:E marking carbon steel welding rod (low alloy steel welding rod, stainless steel welding rod, the same code name is E).43 marked fused metal tensile strength is greater than or equal to 420MPa (i.e. 43kgf / mm2).Third digit indicating welding position suitable for welding electrode.0 and 1 mean all position welding (flat welding, vertical welding, horizontal welding, overhead welding).2 for flat and horizontal fillet welding.4 means suitable for vertical down welding.Fourth digits indicate the kind of electrode material (acidity, basicity), welding polarity and so on.
