7.5 mm Diameter Tube Magnesium Alloy Tube (IMAGE) DOE/Pacific Northwest National Laboratory Caption PNNL's ShAPE™ extrusion process produced this 7.5 mm diameter tube with a 0.75 mm wall thickness from flakes of a magnesium alloy. Credit PNNL Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.