D Technical Information A Comparison table materials D2-D8 Turning Comparison table hardness and tensile strength D9-D10 Conversion table chip breaker – turning D11-D12 Conversion table chip breaker – milling/turning D13-D21 Example of materials for machining groups D22 Form test protocol D23 Torque for screw D24 B Milling C Drilling D Information Technical E Index D1