Deep Drawing Steels

Deep Drawing Steels Deep drawing steels are used normally in the form of sheets which are formed into formed products by a sheet forming process. The commonly used processes for sheet forming are deep drawing and stretch forming processes. Deep drawing is the most popular steel forming process available to manufacturers since it offers outstanding forming characteristics and good resistance to ageing. Unlike steel stamping, which typically punches out a part, deep drawing is a process that involves using a die to form blank sheets of metal into a desired shape around a punch.  Deep drawn parts are distinguished by a depth equal to more than half of the diameter of the part. Numerous re-draws can be used to attain greater depths. The wall thickness in case of deep drawn products is nearly the same as the thickness of the sheet blanks as compared to stretch forming where the thickness decreases. This manufacturing process has the advantages of unit cost, weight savings and flexibility with design over other traditional processes. Deep drawing steel can be hot rolled or cold rolled or can be coated steels such as galvanized iron or galvannealed steel sheet. However the surface structures and excellent formability properties of cold rolled steel grades make them ideal for the purpose of deep drawing. Deep drawing steels are used extensively in automobile industry. The range of deep drawing steels covers four levels based on the difficulties faced during forming operations. These four levels include drawing, deep drawing, extra deep drawing and extra deep drawing plus. The range of deep drawing steels include non alloyed mild steels, dual phase steels, rephosphorized steels, interstitial free steels with very limited carbon content, other advanced high strength steels and stainless steels. During the process of deep drawing a...