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Hardness Conversion Table

This comprehensive hardness conversion table serves as an invaluable reference, facilitating the seamless transition between Brinell Hardness and Rockwell Hardness scales, and vice versa. By providing a detailed correlation between these two prominent hardness measurement systems, the table not only enables swift and accurate cross-referencing but also extends its utility by drawing correlations to the approximate tensile strength associated with each hardness scale.

Brinell HardnessRockwell Hardness
Tungsten Carbide Ball
3000 kg
A Scale
60 kg
B Scale
100 kg
C Scale
150 kg
Tensile Strength
(approx.)
_86_68_
_85_68_
_85_67_
76784_66_
75784_66_
74584_65_
73384_65_
72283_64_
712____
71083_63_
69883_62_
68482_62_
68282_62_
67082_61_
65681_60_
65381_60_
64781_60_
63881_59329,000
63081_59324,000
62780_59323,000
60180_57309,000
57879_56297,000
55578_55285,000
53478_54274,000
51477_52263,000
49576_51253,000
47776_50243,000
46175_48235,000
44474_47225,000
42973_46217,000
40172_43202,000
38871_42195,000
37571_40188,000
36370_39182,000
35269_38176,000
34169_37170,000
33168_36166,000
32168_34160,000
31167_33155,000
30266_32150,000
29366_31145,000
28565_30141,000
27765_29137,000
26964_28133,000
26264_27129,000
25563_25126,000
24862_24122,000
2416210023118,000
235619922115,000
229619820111,000
223_9720_
217_9618105,000
212_9617102,000
207_9516100,000
201_941598,000
197_93_95,000
192_92_93,000
187_91_90,000
183_90_89,000
179_89_87,000
174_88_85,000
170_87_83,000
167_86_81,000
163_85_79,000
156_83_76,000
149_81_73,000
143_79_71,000
137_76_67,000
131_74_65,000
126_72_63,000
121_70_60,000
116_68_58,000
111_66_56,000