3003 알루미늄 디스크 서클 개요 3003 aluminum alloy is an aluminum-manganese alloy. The main alloying element is manganese. It is the most widely used anti-rust aluminum. The strength of this alloy is not high, but it is higher than general industrial pure aluminum. It cannot be strengthened by heat treatment. Generally, cold working methods are used. To improve its mechanical properties. It has high plastic ...