How do we know which welding electrodes are good for a given situation? Well, first we need to understand some of the properties of these electrodes and what the designation represent.
In looking at a E6010 electrode, the letter “E” represents “electrode” or you could think of it as referring to an electric arc process. The next two digits, in this case “60”, represent the tensile strength deposited per square inch. For example, “60” means 60,000 psi tensile strength is what you could expect to deposit after the weld is completed, not before. The next digit, “1”, represents the position that this electrode can be used. In this case, the “1” represents all positions. The last digit represents the chemical composition of the flux. In this case high cellulose and sodium are the major ingredients.
This is just one example of how welding electrodes in the SMAW process are identified. So what can you find about the E7018 electrode? Can this electrode be used in all positions? What about E7024? I will leave these questions open for discussion. Any questions you might have about any electrode you come across, just ask and I will answer to the best of my abilities.