IANICRMO393E - Exocor ENiCrMo-3 Inconel 625 Stick Electrode 3/32" 10lb

Technical Overview of Exocor ENiCrMo-3 Electrodes

The Exocor ENiCrMo-3 is a premium quality, flux-coated shielded metal arc welding (SMAW) electrode designed to meet the rigorous AWS A5.11 specifications. Commonly referred to in the industry as Inconel 625, this electrode deposits a nickel-chromium-molybdenum weld metal that delivers exceptional mechanical properties and corrosion resistance. The 3/32-inch (2.4mm) diameter allows for precise heat input control, making it suitable for welding thinner gauge materials or performing detailed root passes in pipe welding applications.

The metallurgy of the ENiCrMo-3 deposit is engineered to resist severe environments. The high molybdenum content (typically 8-10%) works in conjunction with niobium to stiffen the nickel-chromium matrix, providing high tensile strength without the need for precipitation hardening heat treatments. This alloy composition offers outstanding resistance to pitting and crevice corrosion in chloride-containing environments, as well as immunity to chloride-ion stress-corrosion cracking. Furthermore, the weld metal retains its strength and ductility across an impressive temperature range, from cryogenic applications to high-temperature service up to 1800°F (982°C).

This electrode is the industry standard for joining Inconel 625, Inconel 601, and Incoloy 825 to themselves or to other alloys. It is also the preferred choice for dissimilar welding applications, such as joining stainless steels to carbon steels or nickel alloys to ferrous bases. The formulation of the flux coating ensures a stable arc on Direct Current Electrode Positive (DCEP) polarity, producing a bead with fine ripples and excellent slag detachability, which is critical for multi-pass welding procedures to avoid slag inclusions.

Industrial Applications and Compliance

Exocor's ENiCrMo-3 is widely utilized in sectors demanding high material integrity. In the chemical processing industry, it is used for fabricating reaction vessels, heat exchangers, and transfer piping that handle aggressive acids. The offshore oil and gas sector relies on this alloy for cladding wellheads and valves exposed to sour gas and seawater. Additionally, it serves critical roles in the aerospace and power generation industries for components subjected to high thermal stress. The product is packaged in 10lb hermetically sealed tubes to ensure low moisture content and optimal weldability right out of the box.