Hardness Conversion Chart

Hardness Conversion Chart


Comparison of Hardness standards including Brinell, Rockwell B scale, Rockwell C scale, Vickers and others.
***SCROLL DOWN TO SEE EACH SCALE***

Brinell Hardness Rockwell B ScaleRockwell C ScaleVickers Hardness NumberKnoop HardnessRockwell A ScaleRockwell F Scale 15T Scale30T Scale45T Scale Approximate Tensile Strength
7396583284683.9
7226480082283.4
7066377279982.8
6886274677682.3
6706172075481.8
6546069773281.2
6345967471080.7351
6155865369080.1338
5955763367079.6325
5775661365079.0313
5605559563078.5301
5435457761278.0292
5255356059477.4283
5125254457676.8273
4965152855876.3264
4825051354275.9255
4684949852675.2246
4554848451074.7238
4424747149574.1229
4324645848073.6221
4214544646673.1215
4094443445272.5208
4004342343872.0201
3904241242671.5194
3814140241470.9188
3714039240270.4182
3623938239169.9177
3531103837238069.4171
344109.53736337068.9166
3361093635436068.4161
327108.53534535167.9156
3191083433634267.4152
311107.53332733466.8149
3011073231832666.3146
2941063131031865.8141
286105.53030231165.3138
2791052929430464.6135
271104.52828629764.3131
264103.52727929063.8128
258102.52627228463.3125
2531022526627862.8123
2471012426027262.4119
243100.52325426662.0117
24010022.824025161.593.183.172.9116
2349921.723424660.992.882.571.9114
2289820.522824160.292.581.870.9109
2229718.022223659.592.181.169.9104
2169617.021623158.991.880.468.9102
2109515.521022658.391.579.867.9100
2059414.020522157.691.279.166.998
2009313.020021657.090.878.465.994
1959211.519521156.490.577.864.892
1909110.019020655.890.277.163.890
185909.018520155.289.976.462.889
180898.018019654.689.575.861.888
176886.417619254.089.275.160.886
172875.417218853.488.974.459.884
169864.516918452.888.673.858.883
165853.316518052.388.273.157.882
162842.016217651.787.972.456.881
159831.015917351.187.671.955.880
1568215617050.687.371.154.877
1538115316750.086.970.453.873
1508015016449.586.669.752.872
1477914716148.986.369.151.870
1447814415848.486.068.450.869
1417714115547.985.667.749.868
1397613915247.385.367.148.867
1377513715046.899.685.066.447.866
1357413514746.399.184.765.746.865
1327313214545.898.584.365.145.865
1307213014345.398.084.064.444.863
1277112714144.897.483.763.743.862
1257012513944.396.883.463.142.861
1236912313743.896.283.062.441.860
1216812113543.395.682.761.740.859
1196711913342.895.182.461.039.858
1176611713142.394.582.160.438.757
1166511612941.893.981.859.737.756
1146411412741.493.481.459.036.7
1126311212540.992.881.158.435.7
1106211012440.492.280.857.734.7
1086110812240.091.780.557.033.7
1076010712039.591.180.156.432.7
1065910611839.090.579.855.731.7
1045810411738.690.079.555.030.7
1035710311538.189.479.254.429.7
1015610111437.788.878.853.728.7
1005510011237.288.278.553.027.7
5411136.887.778.252.426.7
5311036.386.577.951.725.7
5210935.986.077.551.024.7
5110835.585.477.250.323.7
5010735.084.876.949.722.7
4910634.684.376.649.021.7
4810534.183.776.248.320.7
4710433.783.175.947.719.7
4610333.375.647.018.7