Oxyfuel cutting is typically used to cut which material?

• A. Thinner sheet metal
• B. Stainless Steel
• C. Structural Steel
• D. Non-ferrous metal

Answer: (C)

Oxyfuel cutting relies on burning fuel gas in a stream of oxygen to oxidize iron in the metal and blow away the resulting oxide. This makes the process well suited for ferrous metals, especially carbon steel, where iron oxide forms readily and can be removed cleanly.

Structural steel is a common, thick, iron-based material to cut in fabrication shop work, and oxyfuel equipment is economical and effective for cutting these large sections. The technique isn’t ideal for stainless steel because its chromium-rich oxide resists further oxidation, leading to slow cutting and poor edge quality. Non-ferrous metals like aluminum or copper don’t rely on iron oxidation, so oxyfuel isn’t an efficient or practical method for them. While you can cut thinner stock with oxyfuel, the process shines on thicker carbon steels such as structural members, which is why this is the best answer.