—- Deep Draw Metal Stamping Parts Types and Characteristics

Deep drawn metal stampings can be classified into 3 categories, simple, average & difficult. Simple drawn parts usually have the following characteristics; Straight one diameter shell, no critical visual requirements, corner radius equal to 3 times material thickness or greater, an overall length of 1 ½ to 2 ½ times the diameter of the part, an overall length tolerance of plus or minus .005, a wall thickness of .010 – .020 and a tolerance for the outside or inside diameter of the part of plus or minus .002.

An average drawn part may be a two or three step diameter shell, average visual requirements, corner radius 3 times material thickness or greater, overall length 2 ½ to 3 ½ times the diameter of the part, an overall length tolerance of plus or minus .005, a .012 – .025 wall thickness and an outside diameter or inside diameter tolerance of plus or minus .001.

Moving forward with our examination of part characteristics, the next type of part would be classified as difficult. These parts typically have tapered drawn shells, average visual requirements, overall length of 3 ½ to 5 times the diameter of the shell, overall length tolerance of + or – .005, outside diameter or inside diameter tolerance of + or – .001 and material requirements of stainless steel, titanium or Monel.

Lastly, regarding the characteristics would be the most difficult part types. These parts could have features such as radial nose shaped shells, multiple pierced or formed shells and sides pierced or thread rolled shells. Parts classified as most difficult may also have involved secondary operations. The overall length of the part will be greater than 5 times the diameter of the shell, and tolerances will be critical.

Accurate Forming is a Deep Draw Metal Stamper who was established in 1955. All of Accurate Forming’s operations take place in our 70,000 square foot facility located in Hamburg, NJ. Accurate Forming manufactures cylindrical shaped parts using transfer press technology. The size range for these parts ranges from .700” in length with a diameter of 1.562” all the way to 5.44” in length with a .400” diameter. Material thicknesses range from .007” thick up to .062” thick. Materials that are used in the deep draw manufacturing process are aluminum, cold rolled steel, pre-plated crs, stainless steel, copper, brass and other precious metal alloys.

Please contact Accurate Forming at (973)827-7155 or at [email protected] or visit our website at www.accurateforming.com to learn more about what Accurate Forming can do for you.