This unit of competency defines the skills and knowledge required to identify and select common engineering materials including ferrous metals, cast irons, carbon and alloy steels, stainless steels, coated steels, nonferrous metals, aluminium and its alloys, copper and its alloys, nickel alloys, zinc, titanium, magnesium, refractory metals, polymers, thermosetting polymers, thermoplastic polymers, ceramics and glasses.