Aluminium-conductor steel-reinforced cable coating thickness would be designated GC2. Higher strength grades of steel are designated high-strength (3), extra-high-strength (4), and ultra-high-strength (5). An ultra-high-strength galvanized steel core with class A coating thickness would be designated GA5. The use of higher strength steel cores increases the tensile strength of the conductor allowing for higher tensions which results in lower sag. Zinc-5% aluminium mischmetal coatings are designated with an "M". These coatings provide increased corrosion protection and heat resistance compared to zinc alone. Regular strength Class "A" mischmetal thickness weight coated regular strength steel would be designated MA2. Aluminium-clad steel is designated as "AW".
Sharon Steel Corporation as semi-finished. The tin and sheet bar is delivered to various tin and sheet mills as a source of steel required for the manufacture of cans, bottle tops, kitchen utensils, enameled ware, toys, sign stock, and similar products. It is also used in auto body sheets, metallic furniture, radio and refrigerator stock, metal lath, steel drums, galvanized and other coated sheets for the manufacture of garbage and ash cans, coal and water buckets, and flat, corrugated and formed sheets for the building trades. The Carnegie, the American Steel and Wire Company, and the American Sheet and Tin Plate Company were