Howmet Aerospace Inc. is engaged in lightweight metals engineering and manufacturing. Its segments include Engine Products, Fastening Systems, Engineered Structures and Forged Wheels. Engine Products produces investment castings, including airfoils, and seamless rolled rings primarily for aircraft engines and gas turbine applications. Engine Products produces rotating parts, as well as structural parts. Fastening Systems produce aerospace fastening systems, as well as commercial transportation. Fastening Systems' products are also critical components of commercial transportation vehicles and construction, industrial, and renewable energy equipment. Engineered Structures produces titanium ingots and mill products for aerospace and defense applications and is vertically integrated to produce titanium forgings, titanium extrusions, and landing gear components. Forged Wheels provides forged aluminum wheels and related products for heavy-duty trucks and the commercial transportation market.