Which of the following is NOT considered a non-ferrous metal?

Carbon steel is classified as a ferrous metal because it primarily consists of iron, along with a small percentage of carbon. Ferrous metals are those that contain iron, which typically makes them magnetic and strong but also susceptible to rust and corrosion when exposed to moisture.

On the other hand, non-ferrous metals, such as magnesium, zinc, and brass, do not contain significant amounts of iron. These metals are generally more resistant to corrosion, lighter in weight, and possess excellent conductivity properties. For instance, magnesium is known for its strength-to-weight ratio, zinc is often used for galvanizing to protect iron from rust, and brass, an alloy of copper and zinc, is widely used for its durability and aesthetic appeal in plumbing applications.

Understanding the distinction between ferrous and non-ferrous metals is crucial in plumbing, as it impacts material selection based on factors like corrosion resistance, weight, and the intended use of the metal in various plumbing systems.