FCXHS-120 - FCXHS-120 120ksi High-Strength Flux-Cored Welding Wire

Stronger Welds for Toughest Jobs

When standard wire just won't cut it, reach for the FCXHS-120. This isn't your everyday flux-core; it's a beast designed for the heavy-duty stuff—cranes, bulldozers, and structural steel that needs to hold massive loads. If you are welding on T-1 steel or other high-strength alloys, this 120,000 psi tensile strength wire gives you the confidence that your weld won't be the weak link.

We know that high-strength wires can sometimes be a pain to run, but the FCXHS-120 is built differently. It runs with a smooth, buttery arc that feels a lot like a standard 71T-1 but packs nearly double the strength. The slag peels off easily, often curling up on its own, and the spatter is minimal, so you spend less time grinding and more time burning wire. It’s an all-position wire, meaning you can run vertical-up stringers or overhead fillets without the puddle dripping out on you.

Make sure you are running a mixed gas (Argon/CO2) to get the best performance out of this wire. It handles heat well and wets out nicely at the toes, reducing the chance of stress risers. Whether you are patching a cracked boom in the field or fabricating a high-stress frame in the shop, the FCXHS-120 delivers the professional results and reliability you need to sign off on the job.

Why Welders Like It

• Runs Smooth: Stable arc with mixed gas, very little spatter.
• Easy Cleanup: Slag releases easily, saving you prep time between passes.
• All-Position: Great puddle control for vertical and overhead welds.
• Serious Strength: Designed specifically for 100ksi+ yield steels.