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USER GUIDE
      INDEXABLE DRILLS



          Machining Data for DR Drills










           ISO
                                                                                          2
                                                                                                             (1)
                                                                   Condition
                                                                                     [N/mm ]
                                                                                                          No.
                                                                                                   HB
                                     < 0.25 %C
                                                                                       420
                                                                                                           1
                                                                   Annealed
                                                                                                  125
                                                                   Annealed
                                                                                                  190
                                                                                       650
                                     ≥ 0.25 %C
                                                                                                           2
            Non-alloy steel and cast   Material               Quenched and tempered  Tensile Strength   Hardness   Group
                                                                                                  250
                                     < 0.55 %C
                                                                                       850
                                                                                                           3
            steel, free cutting steel
                                                                   Annealed            750        220      4
                                     ≥ 0.55 %C
                                                              Quenched and tempered   1000        300      5
                                                                   Annealed            600        200      6
          P                                                                            930        275      7
            Low alloy and cast steel (less than 5% of alloying elements)
                                                              Quenched and tempered   1000        300      8
                                                                                      1200        350      9
                                                                   Annealed            680        200      10
            High alloyed steel, cast steel and tool steel
                                                              Quenched and tempered   1100        325      11
                                                                Ferritic/martensitic   680        200      12
            Stainless steel and cast steel
                                                                   Martensitic         820        240      13
          M Stainless steel and cast steel                       Austenitic, duplex    600        180      14
                                                                 Ferritic / pearlitic             180      15
            Gray cast iron (GG)
                                                                Pearlitic / martensitic           260      16
                                                                    Ferritic                      160      17
          K Nodular cast iron (GGG)
                                                                    Pearlitic                     250      18
                                                                    Ferritic                      130      19
            Malleable cast iron
                                                                    Pearlitic                     230      20
                                                                 Not hardenable                    60      21
            Aluminum-wrought alloys
                                                                   Hardenable                     100      22
                                     ≤12% Si                     Not hardenable                    75      23
            Aluminum-cast alloys                                   Hardenable                      90      24
                                     >12% Si                     High temperature                 130      25
          N
                                     >1% Pb                        Free cutting                   110      26
            Copper alloys                                            Brass                         90      27
                                                                Electrolytic copper               100      28
                                                              Duroplastics, fiber plastics                 29
            Non metallic
                                                                  Hard rubber                              30
                                                                   Annealed                       200      31
                                     Fe based
                                                                   Hardened                       280      32
            High temperature alloys                                Annealed                       250      33
          S                          Ni or Co based                Hardened                       350      34
                                                                     Cast                         320      35
                                                                     Pure              400                 36
            Titanium alloys
                                                             Alpha+beta alloys, hardened  1050             37
                                                                   Hardened                      55 HRC    38
            Hardened steel
          H                                                        Hardened                      60 HRC    39
            Chilled cast iron                                        Cast                         400      40
            Cast iron                                              Hardened                      55 HRC    41
          •  This table refers to 2/3xD drill ratio usage. For 4xD ratio decrease cutting data by 15%
          •  Chipformer should be selected based on our geometry range recommendations
          •  When using external coolant supply only, reduce cutting speed by 10%
          •  Use internal coolant supply when machining austenitic stainless steel
          (1)   For workpiece materials list, see pages 495-524

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