Ni-CL - This electrode excels in low-stress welding applications on light- and medium-weight castings and where maximum machinability is desired.
Cast-Alloy deposits sound weld metal on good quality castings. Bonding to both base metal and adjacent beads is complete. Spatter level is low and slag is easily removed.
308L - This electrode is For 308 and 304 stainless base metal. Smooth, tough welds with the strength, corrosion and crack resistance needed for welding stainless steel in all positions. Easy slag removal. The electrode itself has low carbon content to prevent carbide precipitation during welding as well as to inhibit any subsequent carbide precipitation of the weld during service. It yields a concave weld bead that is smooth and refined.
E6010 - Good usability characteristics in all weld positions. They are characterized by a deeply penetrating, forceful, spray type arc. The slag is very thin and easily removed. The majority of applications are on mild steel. Typical applications include building and bridge structures, storage tanks, pipelines and shipbuilding. These electrodes are also suited for working on materials which are rusty, painted, galvanized of other "dirty" work surfaces.
E6011 - Designed to copy the usability characteristic and mechanical properties of the electrodes using alternating current power sources. Penetration, arc action, slag, and appearance are very similar to the 6010 electrodes. In addition to the coating ingredients found in the 6010 electrode small amounts of calcium and potassium are present to make it suitable for AC. Typical applications are the same as the 6010 electrode.
6013 - These electrodes are characterized by light to medium penetration, a rather quiet arc, and a dense slag completely covering the weld deposit. Slag removal is excellent and the arc can be established and maintained easily. These electrodes were made first for sheet metal applications, however, larger diameters are used for heavier weldments. The coating contains elements which permit establishing the arc at low open circuit voltages and low welding amperages. There is not an electrode which can truly be called an "all purpose" electrode, however, the E-6013 is sometimes called the "all Purpose" because of its many applications.
This electrode is popular in schools and welder training programs since they are usable with all types of welding power supplies and welding positions. Ordinarily the E-6013 would not be used for high amperage, high deposition rate applications.
7014 - These electrodes have similar coatings to the E-6013 with the addition of iron powder. The amount of flux and the percentage of iron powder varies between manufacturer and types within the class. The addition of the iron powder permits a higher deposition rate than the E-6013 and allows use of higher amperage and higher travel speeds. There is a greater amount of slag, however they are still usable in all weld positions. The addition of iron powder helps to stabilize the arc and reduce spatter at high amperage. The iron powder also adds to the filler giving higher deposition rates.
The E-7014 electrodes are all right for welding mild and low alloy steels. Weld beads are smooth with fine ripples. Penetration is low to medium which is good for poor fit-up jobs. The end view of fillet welds tends to be flat to slightly convex. The slag is easily removed, self-cleaning in many cases.
7018 - These electrodes are the most popular of the low hydrogen electrodes. The fillet welds made in the horizontal and flat positions are slightly convex in profile with a smooth finely rippled surface. The electrodes are characterized by a smooth, quiet arc with very low spatter. The penetration is low and high travel speeds can be used. This electrode is used for mild and low alloy steels, and some high carbon steels. High strength structural steels, plate fabrication, shipyards, pressure vessels, and piping systems are a few of the typical applications. The most severe x-ray quality standards can be met with the E-7018 series of electrodes.
7024 - These electrodes have coverings with high amounts of iron powder together with ingredients almost like those found in E-7014 and E-6013 electrodes. As a rule, the coatings on E-7024 electrodes are very high in iron powder, usually amounting to about half of the weight. The large amount of flux means that a higher welding amperage be used with an equivalent diameter electrode of another type. The slag produced will be almost self-peeling if proper welding techniques are used. Since there is a large amount of slag, these electrodes are not suited for out-of-position welding.
This electrode is often used for high deposition work on mild steel. Many weldments for structural applications and large machine and large machine components are welded with this electrode. Satisfactory welds for some jobs can be done on low alloy, medium and high carbon steels.