AMPCO 18 Rod Material Bronze Material Grade Ampco(R) 18 Outside Diameter 3 in Overall Length 12 in Outside Diameter Tolerance +0.053/+0.083 Standards AS 9100 ISO 9001 Fabrication Cast Yield Strength 38 000 psi Mechanical Finish Mill Rockwell Hardness B90 Shape Disc Application Plastic Processing Steel Tube Bending Tube Forming Brinell Hardness 183 System of Measurement Inch Tensile Strength 95 000 psi Includes Material Certificate Yes