Extra Deep Drawing Steel Properties

Dd11 hr4 drawing or forming quality for general forming applications.

Extra deep drawing steel properties.

Also called edds or eddq it is a type of steel that typically contains less than 0 005 percent carbon and uses a low level of titanium and or columbium to tie up hardening elements to create an interstitial free chemistry that produces an extremely refined grain pattern. It is thus a shape transformation process with material retention. Dd13 hr2 extra deep drawing properties for applications involving severe drawing. This type of steel should be ordered for applications that require the most consistent type of low carbon steel.

Edds hot dipped zinc coated extra deep drawing steel edds. Remaining is iron with other impurities. Drawing ratios can help determine the maximum amount of deep drawing possible. The process is considered deep drawing when the depth of the drawn part exceeds its diameter.

Edds is composed of maximum 0 002 percent of carbon maximum 0 4 percent manganese maximum 0 02 percent phosphorous maximum 0 02 percent sulphur. Edds steel is for extra drawing sure stabilized steel whereas dds type c is for deep drawing only. Deep drawing steel dds deep drawing steel dds is typically produced as low carbon steel with a max carbon of 0 06 c interstitial free i f steel is also allowed at producer s discretion but is not required. The drawing and forming steels must be differentiated from the supraform hr and tm ranges which are.

For deep drawing steel must have good formability which means the steel has the ability of plastic deformation without fracture and loss of stability. Deep drawing is a sheet metal forming process in which a sheet metal blank is radially drawn into a forming die by the mechanical action of a punch. This type of steel should be ordered for applications that require the most consistent type of low carbon steel. Due to the geometry forces metal flow and material properties of the work there is a limit to the amount of deep drawing that can be performed on a sheet metal blank in a single operation.

During the process of deep drawing a high level of rejection takes place in case the design of die is not proper or if the steel does not have the properties needed for deep drawing.