1.1 This specification covers sheet steel in coils and cut lengths coated with lead-tin alloy (terne metal, see 3.2.3) by the hot-dip process. This material is commonly known as terne and is used where ease of solderability and a degree of This specification covers sheet steel in coils and cut lengths coated with lead-tin alloy by the hot-dip process. The material, also known as terne-coated sheet, is available in four designations as commercial steel, deep drawing steel, extra deep draw