S681719-H28 - Hobart Fabco 410NiMo T1 1/16" Flux-Cored Stainless Wire 33lb

Technical Overview: Hobart Fabco 410NiMoT1

The Hobart Fabco 410NiMoT1 is a specialized gas-shielded flux-cored wire designed for the fabrication and repair of martensitic stainless steels. Specifically formulated to meet AWS E410NiMoT1-1 and E410NiMoT1-4 classifications, this wire is the industry standard for welding ASTM CA6NM castings as well as 410, 410S, and 405 stainless steel grades. The 1/16-inch (1.6mm) diameter allows for significant deposition rates in the flat and horizontal positions, making it an essential consumable for heavy industrial maintenance and repair operations (MRO).

Metallurgically, the wire deposits a martensitic structure enriched with nominal 12% chromium, 4.5% nickel, and 0.55% molybdenum. This chemistry provides exceptional mechanical properties, including high tensile strength (typically exceeding 110 ksi) and superior toughness compared to standard 410 grades. Crucially, the addition of nickel and molybdenum enhances the weld metal's resistance to cavitation, erosion, and abrasion, which are primary failure modes in hydroelectric power generation components. The wire is designed to operate with either 100% CO2 or a 75% Argon / 25% CO2 shielding gas mixture, providing flexibility depending on the available gas supply and desired arc characteristics.

Proper thermal management is critical when using Fabco 410NiMoT1. Due to the air-hardening nature of the base materials and the weld deposit, preheating and interpass temperature control are typically required to prevent cold cracking. Post-weld heat treatment (PWHT) is also recommended to temper the martensitic structure, relieve residual stresses, and optimize the ductility and toughness of the finished weldment. This product is supplied in a 33 lb Vacuum Packed Wire Basket (VPWB), ensuring the flux remains dry and low-hydrogen conditions are maintained until the moment of use.