Examples of the exotic materials that are machined include Monel, Titanium, Invar, Cres, Delrin, Vespel, Inconel, high nickel content alloys, Hastalloy, Stainless Steel, Tantalum, Tungsten, Waspalloy, Powdered & Sintered Metals, Aermet, Delrin, Invar, Kovar and Vespel.