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P. 88

MATERIAL GROUPS





             According to DIN / ISO 513 and VDI 3323
                                                                    Tensile                Hardness Material
                                                                   Strength  Kc1
                                                                                (1)
               ISO  Material                 Condition             [N/mm ]   [N/mm ]  m c (2)  HB    No.
                                                                                   2
                                                                         2
                                    < 0.25 %C Annealed               420       1350   0.21    125       1
                    Non-alloy steel   >= 0.25 %C Annealed            650       1500   0.22    190       2
                    and cast steel,   < 0.55 %C Quenched and tempered  850     1675   0.24    250       3
                    free cutting steel  >= 0.55 %C Annealed          750       1700   0.24    220       4
                                             Quenched and tempered   1000      1900   0.24    300       5
                    Low alloy steel          Annealed                600       1775   0.24    200       6
               P    and cast steel                                   930       1675   0.24    275       7
                    (less than 5% of         Quenched and tempered   1000      1725   0.24    300       8
                    alloying elements
                                                                     1200      1800   0.24    350       9
                    High alloy steel,        Annealed                680       2450   0.23    200       10
                    cast steel, and tool steel  Quenched and tempered  1100    2500   0.23    325       11
                                             Ferritic/martensitic    680       1875   0.21    200       12
                    Stainless steel
                                             Martensitic             820       1875   0.21    240       13
               M    Stainless steel          Austenitic              600       2150   0.20    180       14

                                             Pearlitic/ferritic                1150   0.20    180       15
                    Grey cast iron
                                             Pearlitic/martensitic             1350   0.28    260       16
               K    Ductile cast iron (nodular)  Ferritic                      1225   0.25    160       17
                                             Pearlitic                         1350   0.28    250       18
                                             Ferritic                          1225   0.25    130       19
                    Malleable cast iron
                                             Pearlitic                         1420    0.3    230       20
                    Aluminum-                Not cureable                      700    0.25     60       21
                    wrought alloy            Cured                             800    0.25    100       22
                                    <=12% Si Not cureable                      700    0.25     75       23
                    Aluminum-cast,
                    alloyed                  Cured                             700    0.25     90       24
               N                      >12% Si High temperature                 750    0.25    130       25
                                                                                      0.27
                                                                               700
                                                                                                        26
                                                                                              110
                                      >1% Pb Free cutting
                    Copper alloys
                                             Brass                             700    0.27     90       27
                                             Electrolitic copper               700    0.27    100       28
                                             Duroplastics, fiber plastics                               29
                    Non-metallic
                                             Hard rubber                                                30
                                             Annealed                          2600   0.24    200       31
                                  Fe based
                                             Cured                             3100   0.24    280       32
  D                 High temp. alloys  Ni or Co   Annealed                     3300   0.24    250       33
               S                  based      Cured                             3300   0.24    350       34
                                             Cast                              3300   0.24    320       35
                    Titanium and                                   RM 400      1700   0.23              36
                    Ti alloys                Alpha+beta alloys cured   RM 1050  2110  0.22              37
                                             Hardened                          4600          55 HRc     38
                    Hardened steel
               H                             Hardened                          4700          60 HRc     39
                    Chilled cast iron        Cast                              4600           400       40
                    Cast iron                Hardened                          4500          55 HRc     41
               Steel    Stainless Steel  Cast Iron
               Nonferrous    High Temp. Alloys  Hardened Steel

            (1)  Specific cutting force for 1 mm  chip section.
                                   2
            (2)  Chip thickness factor.




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