110 Copper Rectangular Bar Material Copper Material Grade 110 Mechanical Finish Mill Overall Length 36 in Overall Width 3 in Yield Strength 44 000 psi Fabrication Cold Finished Thickness 0.25 in Thickness Tolerance +/-0.005 in Standards ASTM B133 QQ-B-575 QQ-C-502C SAE J461 SAE J463 Temper O Heat Treatable Yes Heat Treatment Annealed Rockwell Hardness B66 System of Measurement Inch Length Tolerance +/-1 in Maximum Temperature 1 600 Degrees F