CL 40 Cast Iron Rod Material Cast Iron Material Grade CL 40 Overall Length 12 in Heat Treatable Yes Heat Treatment No Mechanical Finish Mill Outside Diameter 8 in Outside Diameter Tolerance +0.105/+0.275 in Yield Strength 42 500 psi Fabrication Cast Rockwell Hardness Not Applicable Brinell Hardness 183 Tensile Strength 40 000 psi Machinability Not Available Length Tolerance +/-1.000 in Includes Material Certificate Yes Standards ASTM A48 Shape Rod Application General Purpose