S298012-053 - Hobart FabCO 812-Ni1M .045 Flux-Cored Wire 33lb Spool

Hobart FabCO 812-Ni1M Technical Overview

The Hobart FabCO 812-Ni1M is a premium gas-shielded flux-cored wire designed to meet the rigorous demands of industries requiring high-strength and high-toughness welds. This 0.045-inch diameter wire is formulated with a nominal 1% Nickel content, which significantly enhances the impact properties of the weld metal, particularly at sub-zero temperatures. It meets AWS A5.29 classifications E81T1-Ni1M-JH4 and E81T1-M21A8-Ni1-H4, indicating its suitability for critical applications where mechanical integrity is paramount.

One of the defining characteristics of the FabCO 812-Ni1M is its low diffusible hydrogen content (typically under 4ml per 100g of weld metal). This low hydrogen designation (H4) is crucial for preventing hydrogen-induced cracking (cold cracking) in high-strength steels and thick sections often found in offshore fabrication and heavy structural steel. The wire is designed to operate with mixed shielding gas (75% Argon / 25% CO2), which promotes a stable arc, reduced spatter, and a smooth bead profile.

Metallurgically, the wire provides excellent Charpy V-Notch (CVN) toughness, maintaining ductility even in harsh, cold environments. This makes it a preferred choice for offshore drilling rigs, jack-up rig fabrication, and shipbuilding. The fast-freezing slag system supports all-position welding, including vertical-up and overhead, without sacrificing bead appearance or fusion quality. The vacuum-packed spool (Vpsp) ensures the product arrives factory-fresh, preventing moisture pickup that could compromise the low-hydrogen properties.

Engineers and welding supervisors select the FabCO 812-Ni1M for its consistent mechanical properties in both the as-welded and post-weld heat-treated (PWHT) conditions. Whether used for transmission piping or heavy equipment manufacturing, this consumable delivers the reliability required for code-quality welds.