The most common types of metals that are welded or cut are carbon steel, stainless steel, and aluminum. In terms of cutting, each type of metal has a different recommended blade material. For carbon steel, use a high-carbon steel blade; for stainless steel, use a tungsten carbide blade; and for aluminum, use a diamond-coated blade. In terms of welding, the most popular types of welding rods used with these metals are MIG (metal inert gas) and TIG (tungsten inert gas).

The answer to this question will depend on what type of welding or cutting you plan on doing. If you're looking for a specific type of metal to be welded or cut, it would be best to consult with a professional welder or cutter. However, if you're just looking for general advice on the types of metals that can be welded or cut, then here are some general tips: Welding can be done on most types of metals, including steel, aluminum, and brass. However, different types of welding rods may be better suited for certain metals.