The words âat least 17 years of age and *â*â* under 45 years of ageâ are substituted for the words âwho shall be more than seventeen years of age and *â*â* not more than forty-five years of ageâ.
Steel is cheaper, and brass is more expensive, and not much of a structural material. Brass is a tensile metal, and has a great ability to bend. It is used to make bearings, valves and moving parts, because it does not break easily. Steel, on the contrary, is difficult to cast, and quite difficult to work with in small machines.
Brass is an alloy metal made up of zinc and copper. The amounts used of each are adjusted depending on the intended use of the piece. Brass is popular and is used for cookware, mirror frames, picture frames, vases, candlesticks, instruments, jewelry, fittings and so much more. Brass, like silver and other metals, does tarnish easily.