Stainless Steel Round Tube 316 Stainless Steel 316 Round Tube 12 in Overall Length Outside Diameter 5/8 in Inside Diameter 0.385 in Wall Thickness 0.12 in Fabrication Seamless Heat Treatable No Mechanical Finish Mill Yield Strength 34 800 psi Tensile Strength 79 800 psi 149 Brinell Hardness 80 Rockwell Hardness Includes Material Certificate Yes Standards ASTM A213 System of Measurement Inch