Advantages of Impacting

Impacts	Al. Low Carbon Steel<30 PTS Cu Alloy	Highest mechanical properties both in Al. and Steel	Surface Finish 16-125 RA Tolerances .005" Range L/D Ratios 8:1 Al. 4:1 Steel Multiple Wall Thickness Thinner Walls than forgings and castings
Castings	Many options porosity is a problem for strength; surface finish; machining and conductivity	Lowest mechanical properties	Surface finish Die 16-125 Ra; Sand 250-1000 Ra Tolerances; Die .015" Range; Sand .060" Range More complex shapes than impacts
Forgings	Same as impacts plus; med and high carbon steels; titanium; stainless steel	Higher carbon steels provide superior hardness specs lower mechanical properties than impacts	Surface finish 63-500 Ra tolerances .060" Range > tolerances = higher machining costs more complex shapes than impacts
Stampings & Deep Draws	Al. low med carbon steel & stainless steel	Mechanical properties lower than impacts by 10%	Surface finish , /-16 Ra tolerances .010" Range L/D ratios 2-3:1 range limited wall variation more complex shapes than impacts