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Deep Draw Radius

Aware that the chosen deep draw radius can impact tool costs and per unit price, Professor Metal outlines a good rule of thumb for deep draw radius, when deep drawing metal into round, rectangular, or square shells.

How important is the radius?

The sharpness of radii can affect both tool cost and unit price

A Good Rule of Thumb

Round Shell: Bottom radius and draw die radius (radius under flange if there is to be one) should be four to seven times metal thickness.

Rectangular and Square Shells: Bottom radius and radius under flange, again, should be four to seven times metal thickness.

Corner radii should be eight to ten times metal thickness. If sharper radii are needed, additional tooling and operations will be required.

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With 100 years and 4 generations of experience, Amalco offers design and engineering support for customers who need to manufacture deep drawn and hydroformed metal products and parts. Our team is ready to help you solve design challenges and answer your hydroforming process and deep drawing process questions. If you are new to metal forming and fabrication, Professor Metal is here help you get started.

Professor Metal
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