Impact Extrusion for Automotive, Defense and Consumer Products



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Impact extrusion: How it works

Neuman USA has been in the impact-extrusion business for over 35 years. Neuman USA knows impact-extrusion.


We have created many of the techniques used in this manufacturing process. Impact extrusion consists of three primary approaches: Reverse Impact, Forward Impact and Combination Impact.

Reverse Impact


A lubricated slug is placed in the die cavity and struck with the punch, forcing the metal to flow upward around the punch.


Combination Impact


Combines forward and reverse metal flow and is used to produce complex shapes. A lower punch may also be incorporated with an upper punch so the metal is forced upward into the punch until the cavity is filled.

Forward Impact


Metal is forced through the orifice of a die by the action of a punch, causing the metal to flow in the direction of punch travel. The punch fits the walls of the die so closely that no metal escapes backwards.



The Neuman Aluminium Group produces the highest quality aluminum products at facilities that are strategically located across several continents, including North America. Neuman USA serves American companies by providing quality aluminum parts manufactured by impact extrusion.

© 2018 Neuman Aluminium. All rights reserved.

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Waynesboro, VA 22980


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Suite 385

Birmingham, MI 48009