According to Baidu Aibu, red copper is pure copper, commonly known as red copper, which is named after its purple color. Red copper has good electrical and thermal conductivity, excellent plasticity, and is easy to be hot-pressed and cold-pressed. It is widely used to manufacture products with good conductivity, such as wires, cables, brushes and special etched copper for EDM. Brass is an alloy of copper and zinc. If it is only composed of copper and zinc, it is called ordinary brass. If it is composed of more than two elements, it is called special brass. Brass has strong wear resistance. Brass is usually used to make connecting pipes for indoor and outdoor machines of valves, water pipes, air conditioners and radiators. From the price point of view, red copper is more expensive than brass, because red copper is pure copper and brass is copper-zinc alloy, because the content and purity of copper are different, the price is also different. According to the article -kxting.com, which is more expensive, brass is about 70 yuan per kilogram, while brass is about 39.5 yuan per kilogram. To sum up, which is more expensive, brass or copper? The answer is copper. Because copper is pure copper and brass is copper-zinc alloy, copper has better electrical conductivity and thermal conductivity, while brass has stronger wear resistance, and the price of copper is higher than brass.