Red Seal Plumbing Practice Exam

Low carbon steel is the most suitable option for cutting using the oxy-fuel process because it has a lower melting point compared to stainless steel or high carbon steel, making it easier to heat and cut. Additionally, aluminum is not suitable for oxy-fuel cutting because it requires high temperatures and can easily melt and distort. Stainless steel and high carbon steel, on the other hand, have higher melting points and are more difficult to cut with the oxy-fuel process.