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USER GUIDE
      MATERIALS AND GRADES



          MATERIAL GROUPS
          Hardness Conversion Table

                                                                              N/mm 2  Kpsi

                                                                              80     560
                                                                               80  560
                       200                                                    100    700
                                                                              100  700
                                                                              120    840
                                                                              120  840
                                                                              140    980
                                                                              140  980
                       300
                                                                              160    1120
                                                                              160  1120
                                                                              180    1260
                                                                              180  1260
                                                                              200    1400
                       400                                                    200  1400
                                                                              220    1540
                                                                              220  1540
                                                                              240    1680
                                                                              240  1680
                     Brinell Hardness (HB)                                    260  1820
                                                                              260
                                                                                     1820
                       500
                                                                                     1960
                                                                              280
                                                                              280
                                                                                   1960
                                                                              300
                                                                                     2100
                                                                              300
                                                                                   2100
                       600
                                                                                     2240
                                                                              320
                                                                              320  2240
                       700



                                                                                      Tensile Strength



                                      10     20    30     40    50    60   70
                                           Rockwell “C” Hardness (HRC)





























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