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USER GUIDE
       DEEP HOLE DRILLING








                                                                               Tensile
                                                                               Strength         Hardness
             ISO              Material                    Condition            [N/mm2]            HB
                                        < 0.25 %C          Annealed              420              125
                                       >= 0.25 %C          Annealed              650              190
                  Non-alloy steel and cast steel,   < 0.55 %C  Quenched and tempered  850         250
                  free cutting steel
                                       >= 0.55 %C          Annealed              750              220
                                                      Quenched and tempered     1000              300
             P                                             Annealed              600              200
                                                                                                  275
                                                                                 930
                  Low alloy steel and cast steel
                  (less than 5% of alloying elements)  Quenched and tempered    1000              300
                                                                                1200              350
                  High alloyed steel, cast steel,          Annealed              680              200
                  and tool steel                      Quenched and tempered     1100              325
                                                        Ferritic/martensitic     680              200
                  Stainless steel
                                                          Martensitic            820              240
             M        Stainless steel                      Austenitic            600              180
                                                         Ferritic/pearlitic                       180
                  Grey cast iron (GG)
                                                           Pearlitic                              260
             K    Nodular cast iron (GGG)                  Pearlitic                              160
                                                           Ferritic
                                                                                                  250
                                                           Ferritic                               130
                  Malleable cast iron
                                                           Pearlitic                              230
                  Aluminum-                               Not cureable                             60
                  wrought alloy                             Cured                                 100
                                        <=12% Si          Not cureable                             75
                  Aluminum-cast,
                                                            Cured                                  90
                  alloyed
             N                          >12% Si         High temperature                          130
                                                          Free cutting
                                         >1% Pb
                                                                                                  110
                  Copper alloys                             Brass                                  90
                                                        Electrolitic copper                       100

                                                      Duroplastics, fiber plastics
                  Non-metallic
                                                          Hard rubber
                                        Fe based           Annealed                               200
                                                            Cured                                 280
                  High temp. alloys                        Annealed                               250
             S                        Ni or Co based        Cured                                 350
                                                            Cast                                  320
                                                                               RM 400
                  Titanium Ti alloys
                                                      Alpha+beta alloys cured  RM 1050
























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