255091811 - Esab AtomArc 10018-MM 1/8" Stick Electrodes 50lb Box

High-Strength Welding with Esab AtomArc 10018-MM

The Esab AtomArc 10018-MM is a premium quality low-hydrogen electrode designed for the welding of high-tensile, low-alloy steels. Engineered to meet the rigorous AWS E10018-MM classification, this electrode is the industry standard for applications requiring weld deposits with a minimum tensile strength of 100,000 psi (690 MPa). The "MM" designation indicates a specific Manganese-Molybdenum alloy composition, which provides superior mechanical properties and toughness, making it an essential consumable for heavy industrial fabrication and critical repair work.

This 3.2mm (1/8") diameter electrode comes in a heavy-duty 22.7kg (50 lb) package, suitable for high-volume welding operations. The AtomArc coating formulation is renowned for its moisture resistance, which is critical in preventing hydrogen-induced cracking—a common risk when welding high-strength quenched and tempered steels. Welders will appreciate the smooth arc stability, easy slag removal, and excellent bead contour that AtomArc electrodes consistently deliver. Whether you are working in a shop environment or out in the field, this electrode provides the confidence needed for structural integrity.

Applications and Performance

The AtomArc 10018-MM is specifically tailored for welding Mn-Mo steel castings, armor plate, and high-yield structural steels such as T-1. It is widely used in the manufacturing and repair of earthmoving equipment, cranes, pressure vessels, and military hardware. The electrode operates on Direct Current Electrode Positive (DCEP), ensuring deep penetration and fusion. Its all-position capability allows for versatility in complex assemblies, although it is optimized for flat and horizontal fillets where deposition rates can be maximized.

Storage and Handling

As a low-hydrogen consumable, proper storage is vital to maintain the performance characteristics of the AtomArc 10018-MM. It is recommended to store these electrodes in a dry, controlled environment. If exposed to moisture, reconditioning in a rod oven at the manufacturer's specified temperatures is necessary to restore their low-hydrogen status. This attention to detail ensures that every weld meets the stringent requirements of high-stress applications.