One of the main advantages of metal core wires is

One of the main advantages of metal core wires is

• A. Lower cost than flux core wires.
• B. No external shielding gas is required.
• C. Designed for use on conventional CC power sources.
• D. High deposition rates.

Answer: (D)

High deposition rate is the main advantage because metal core wires are designed to transfer more metal into the weld per unit time. Their metal-rich core, combined with a robust shielding gas process, allows stable spray transfer at higher currents, so you can feed and deposit metal more quickly without sacrificing bead quality. This translates directly to higher productivity on production welds. The other options aren’t the primary benefit: metal core wires aren’t typically cheaper than flux core, they still require shielding gas, and while they work with conventional welding power sources, the standout advantage is the fast buildup of weld metal.

High deposition rate is the main advantage because metal core wires are designed to transfer more metal into the weld per unit time. Their metal-rich core, combined with a robust shielding gas process, allows stable spray transfer at higher currents, so you can feed and deposit metal more quickly without sacrificing bead quality. This translates directly to higher productivity on production welds. The other options aren’t the primary benefit: metal core wires aren’t typically cheaper than flux core, they still require shielding gas, and while they work with conventional welding power sources, the standout advantage is the fast buildup of weld metal.