Drawing ratios can help determine the maximum amount of deep drawing possible.
Extra deep drawing steel properties.
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.
This type of steel should be ordered for applications that require the most consistent type of low carbon steel.
Extra deep drawing steel edds this material is intended for fabricating identified parts where extremely severe drawing or forming in excess of the abilities of ds and dds materials may be involved or when a product essentially free of aging is required.
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.
Edds steel is for extra drawing sure stabilized steel whereas dds type c is for deep drawing only.
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.
The drawing and forming steels must be differentiated from the supraform hr and tm ranges which are.
Dd13 hr2 extra deep drawing properties for applications involving severe drawing.
The process is considered deep drawing when the depth of the drawn part exceeds its diameter.
It is thus a shape transformation process with material retention.
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.
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.
Dd11 hr4 drawing or forming quality for general forming applications.
For deep drawing steel must have good formability which means the steel has the ability of plastic deformation without fracture and loss of stability.
Dd12 hr3 deep drawing quality for general drawing applications.
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.
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.
