Page 270 - ISCAR(HOLE_MAKING_CATALOG_65)
P. 270

USER GUIDE
      DEEP DRILLING - BTA SYSTEM



          Recommended Machining Conditions



                                                                       Tensile Strength               Material
            ISO            Material                   Condition           [N/mm ]      Hardness HB   Group No. (1)
                                                                               2
                                    <0.25% C          Annealed              420            125           1
                                    >=0.25% C         Annealed              650            190           2
               Non-alloy steel and cast   <0.55% C  Quenched and tempered   850            250           3
               steel, free cutting steel
                                    >=0.55% C         Annealed              750            220           4
                                                 Quenched and tempered     1000            300           5
                                                      Annealed              600            200           6
           P   Low alloy and cast steel (less than                          930            275           7
               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
               Grey 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
                                                   Electrolitic copper                     100          28
                                                 Duroplastics, fiber plastics                           29
               Non-metallic
                                                     Hard rubber                                        30
                                                      Annealed                             200          31
                                    Fe based
                                                      Hardened                             280          32
               High temp. alloys                      Annealed                             250          33
           S                        Ni or Co          Hardened                             350          34
                                    based
                                                        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
          (1)  Based on ISO 513 and VDI 3323 standards























   268    ISCAR
   265   266   267   268   269   270   271   272   273   274   275