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P. 588

USER GUIDE
       SOLID CARBIDE DRILLS





             Machining Data for Solid Carbide Drills D=0.8-2.9 mm
                                                                                  Tensile
                                                                                  Strength   Hardness  Material
             ISO                Material                       Condition          [N/mm ]    HB        No.
                                                                                       2
                                         < 0.25 %C             Annealed             420      125        1
                                         >= 0.25 %C            Annealed             650      190        2
                  Non-alloy steel and cast steel,   < 0.55 %C  Quenched and tempered  850    250        3
                  free cutting steel
                                         >= 0.55 %C            Annealed             750      220        4
                                                           Quenched and tempered   1000      300        5
                                                               Annealed             600      200        6
             P    Low alloy steel and cast steel                                    930      275        7
                  (less than 5% of alloying elements)      Quenched and tempered   1000      300        8
                                                                                   1200      350        9
                  High alloyed steel, cast steel,              Annealed             680      200       10
                  and tool steel                           Quenched and tempered   1100      325       11
                  Stainless steel and                        Ferritic/martensitic   680      200       12
                  cast steel                                   Martensitic          820      240       13
             M    Stainless steel                              Austenitic           600      180       14

                                                              Ferritic/pearlitic             180       15
                  Grey cast iron (GG)
                                                                Pearlitic                    260       16
                                                                Ferritic
             K    Nodular cast iron (GGG)                       Pearlitic                    160       17
                                                                                             250
                                                                                                       18
                                                                Ferritic                     130       19
                  Malleable cast iron
                                                                Pearlitic                    230       20
                  Aluminum-                                   Not cureable                    60       21
                  wrought alloy                                 Cured                        100       22
                                          <=12% Si            Not cureable                    75       23
                  Aluminum-cast,                                Cured                         90       24
                  alloyed
             N                            >12% Si            High temperature                130       25
                                          >1% Pb
                                                                                                       26
                                                                                             110
                                                               Free cutting
                  Copper alloys                                 Brass                         90       27
                                                             Electrolitic copper             100       28
                                                          Duroplastics, fiber plastics                 29
                  Non-metallic
                                                              Hard rubber                              30
                                          Fe based             Annealed                      200       31
                                                                Cured                        280       32
                  High temp. alloys                            Annealed                      250       33
              S                         Ni or Co based          Cured                        350       34
                                                                 Cast                        320       35
                                                                                   RM 400              36
                  Titanium Ti alloys
                                                           Alpha+beta alloys cured  RM 1050            37
                                                               Hardened                     55 HRC     38
                  Hardened steel
             H    Chilled cast iron                            Hardened                     60 HRC     39
                                                                                                       40
                                                                 Cast
                                                                                             400
                  Cast iron                                    Hardened                     55 HRC     41
           •  For drill with lengh to diameter ratio larger than 6xD, reduce feed by 20%
           •  If the RPM exceeds 10,000, a dynamic balance should be done to the system
           •  Maximal radial and axial runout should not exceed 0.01 mm
           (1) For workpiece materials list, see pages 1008-1043














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