Low alloy materials are usually manufactured with specific performance by adding a certain amount of alloying elements (such as high strength or heat resistance, wear resistance, corrosion) materials, if you use ordinary carbon steel electrode welding will make the weld the performance of low-alloy materials, at the same time due to the presence of a certain alloy concentration difference, also have some impact on weld properties. Of course, if just ordinary use, it is not completely impossible, given a look at the specific situation, the best use of the base metal element content is the same or slightly higher welding consumables.