101 Copper Round Tube, Material Copper, Material Grade 101, Outside Diameter 5/16 in, Inside Diameter 0.248 in, Wall Thickness 0.032 in, Overall Length 6 ft, Mechanical Finish Mill, Standards ASTM B75, ASTM F68, Wall Thickness Tolerance +/-0.0025 in, Outside Diameter Tolerance +/-0.002 in, Fabrication Welded, Yield Strength 36,000 psi, Temper H80, Rockwell Hardness B40, Shape Round Tube, Application Automotive, Conductors, Particle Accelerators, Brinell Hardness 74, Appearance Metallic