Other metals: In addition to brass, euphoniums can also be made from other metals, such as gold, silver, and nickel. These metals are more expensive than brass, but they can produce a different sound and appearance.
Wood: The bell of a euphonium is often made of wood, such as rosewood or maple. Wood helps to project the sound of the instrument and gives it a warmer tone.
Valves: The valves on a euphonium are typically made of brass or nickel silver. These materials are strong and durable, and they can withstand the wear and tear of frequent use.
Strings: The strings on a euphonium are typically made of gut or nylon. Gut strings are more expensive than nylon strings, but they produce a warmer and more resonant sound.
Other materials: Euphoniums can also be decorated with other materials, such as mother-of-pearl, abalone, and ivory. These materials add a touch of beauty and elegance to the instrument.