TurningMillingDrillingTechnicalInformationIndex Technical InformationComparison table materials D2-D8Comparison table hardness and tensile strengthD9-D10Conversion table chip breaker – turningD11-D12Conversion table chip breaker – milling/turningD13-D21Example of materials for machining groupsD22DA Form test protocol D23 Torque for screw D24 B C D E D1