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硬度对照表(二)
硬度对照表(二)
抗拉强度  维氏硬度(HV)   布氏硬度(HB) 洛氏硬度(HRC)
(Rm N/mm2)
755                  235                  223                  -
770                  240                  228                  20.3
785                  245                  233                  21.3
800                  250                  238                  22.2
820                  255                  242                  23.1
835                  260                  247                  24.0
850                  265                  252                  24.8
865                  270                  257                  25.6
880                  275                  261                  26.4
900                  280                  266                  27.1
915                  285                  271                  27.8
930                  290                  276                  28.5
950                  295                  280                  29.2
965                  300                  285                  29.8
995                  310                  295                  31.0
1030                 320                  304                  32.2
1060                 330                  314                  33.3
1095                 340                  323                  34.4
1125                 350                  333                  35.5
1115                 360                  342                  36.6
1190                 370                  352                  37.7
1220                 380                  361                  38.8
1255                 390                  371                  39.8
1290                 400                  380                  40.8
1320                 410                  390                  41.8
1350                 420                  399                  42.7
1385                 430                  409                  43.6
1420                 440                  418                  44.5
1455                 450                  428                  45.3
1485                 460                  437                  46.1
1520                 470                  447                  46.9
1555                 480                  (456)                47.7
1595                 490                  (466)                48.4
1665                 510                  (485)                49.8
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