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Steel Hardness

The Steel hardness conversion table contains conversion factors for Rockwell, Vickers & Brinell. As a guide we show the theoretical conversion comparison of tonnes tensile in Newtons /mm² and MPa to steel hardness. All figures quoted on this chart are theoretical and for guidance only.

N/mm²BrinellTonsVickersRockwellN/mm²BrinellTonsVickersRockwell
/ MPAHBper sq inC/ MPAHBper sq inB
...902657702295023499
...836637552234922898
...778617392174822297
2033601132715596932124621797
1956578127671576782074521296
1879555122633566622014420695
1802534117599546471974320294
1725514112572526311924219793
1663495108547506161874119292
1617477105523496011834018891
1535461101501485851793918490
150944498479475851743817989
146342995459455701703817587
141741592441445601673717286
135540188424425541633616885
130938885409415541593616484
126337582395405391563516183
123236380382395241523515782
118635377369375081493415481
115534175356365081453315180
122433173344344931433314879
109332171332334931403214578
104731168321324771373214278
101630266310314621343113977
98629364299304621313013675
97028563290294471283013373
93927761282274471262913172
90926959274264311232812870
89326258267254311212812669
86225556260244161182712367
84724855253224161162712166
81624153246214001142611964
78523551240203851112511663