Deep Drawing & Metal Forming Services

Custom Deep Drawin Parts With Conventional Metal Die in Stainless Steel

Deep Drawing & Forming

Deep drawing manufacturing with conventional metal die technology is the stretching of sheet metal stock, commonly referred to as a blank, around a plug. The edges of the metal blank are restrained yet allowed to slide between two rings.  One ring is the blank holder and the other is the die.  The plug passes through the blank holder ring into the cavity of the die ring at the desired depth to achieve the end shape. The dimensions on the part are set based on the shape of the plug, the shape of the die, and how deep the part is drawn, meaning how far the plug travels into the die.  Like hydroform deep drawing, conventional metal die deep drawn applications are typically enclosures, cans, cups, canisters, containers, cover, motor shrouds, tanks, shells, etc.

Depending on the depth to diameter ratio and the material type, we can draw, reverse draw and or redraw your part multiple times to achieve up to 2 to 1 ratios.  While we can form most metals, deep drawing stainless steel is our specialty. 304 and 316 are common readily available grades and ideal materials to design with since they are excellent form-ability and corrosion resistance.  Deep drawing is ideal versus spinning especially at the greater depths for parts with large annual volumes to minimize labor costs and to avoid the complications and corrosion issues common with welds and welding.  For fatigue strength and uniform metal thickness critical applications, deep drawing and hydroforming are preferred over metal spinning.

Deep drawing metal pieces called preforms for metal spinning have been proven to compliment the spinning process to ensure the highest quality spun part.  This is done when minimizing the material strain on the part by utilizing the best aspects of each process.  Deep drawing and metal spinning as a process can produce parts that deep drawing alone and spinning alone cannot do.  Once you have your part deep drawn, if it needs a hole, a stamped feature, welded fitting, or a metal polish specification you can also increase the value of your TMS drawn part while saving time and money by taking advantage of our secondary stamping, spin forming, machining, welding, and metal finishing operations.

Reference Links

Deep Draw Capabilities

 English UnitsMetric Units
Max Part (Punch) Diameter30.0 in762 mm
Max Part Height15.0 in380 mm
Max Flange Diameter*48.0 in1,220 mm
Max Blank Size, Diameter48.0 in1,220 mm
Max Blank Thickness (CRS)0.31 in7.9mm
Max Blank Thickness (Stainless)0.25 in6.4mm
Min Blank Thickness0.036 in0.5 mm
Max Force440 ton3,914 kN
Typical Tolerance+/- 0.030 in+/- 0.75 mm
Special Tolerance
(up to)
+/- 0.010 in+/- 0.25 mm
Typical Production Volume50 to 50,000 pieces / year
Typical Lead Time Prototypes / Samples4 to 6 weeks
Production Lead Time After Samples1 to 2 weeks

 

Typical Deep Drawn Materials

Standard materials we use for deep drawing are shown below. Have something else in mind? Let us know by sending us a request for quote. Our sales estimators are ready to work with you to get exactly the part you are looking for!

MaterialGradeFormability 
Stainless Steel304GoodLowest cost of high quality deep drawing stainless steel material. The high nickel content allows for good deep draw working.
Stainless Steel304 DDQExcellentDDQ stands for deep draw quality. 304 DDQ is similar to stainless steel 304 but with more nickel added to the alloy to further improve the ability to deep draw. When extensive secondary working of the material is to occur, this material is ideal.
Stainless Steel316GoodMore corrosion resistant than 304 grade due to the addition of molybdenum with the same higher levels of nickel, thus allowing for it to be an excellent deep drawing stainless steel.
Stainless Steel410Low400 series, generally lower cost stainless steel than 300 series since there is no nickel, is not ideal for extremely deep parts since the lack of nickel reduces stainless steels deep draw ability. The lower amount of alloying elements also reduces the material's resistance to corrosion and ability to weld.
Stainless Steel430Low430 is similar to 410 with little less strength. Like 410, material is readily available and is less expensive than 300 series stainless steel.
Inconel625GoodThis nickel based alloy as compared to most nickel based alloys has good drawing properties, but low to stainless steels and steels. Since Inconel 625 strain hardens quickly, multiple stress relieves and draw operations are required as the ratio of the diameter to the depth of the part increases.
Inconel718LowThis nickel based alloy can be formed but has less deep draw ability than 625 Inconel. The lower ability means more stress relieve operations would be required which would lead to a more expensive part costs than 625.
CopperCDA 655GoodThis 97% Copper 3% Silicon Bronze draw forms well and has good strength. (UTS 92 ksi, Yield 55 ksi, %E 22) This can be used for marine applications and for cooking kettles.
Carbon Steels
(Cold Rolled)
1008-1020ExcellentLow alloy steels generally draw very well when cold rolled and produce a good quality finish that is normally easy to powder coat after forming and minimal washing.
Carbon Steels1008-1020ExcellentLike cold rolled, hot rolled low carbon alloys form well. The hot rolling process tends to leave a surface that is not as smooth so when lower cost is priority over surface quality, hot rolled steel is a better choice.
Aluminum1100-OExcellentLow strength alloy, nearly 100% aluminum. Draws very well.
Aluminum3003-OExcellentHigher strength than 1100-O. 3003 Aluminum is stain-hardened when cold worked during the deep draw process.
Aluminum6061-OExcellent6061-O aluminum is easily form in the O-temper due to its low mechanical properties. Once the final shape is obtained, the material can be solution heat-treated and aged. T4 is naturally age, T6 artificially aged.