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Brinell Hardness Test A test for determining the hardness of a material by forcing a hard steel or carbide ball of specified diameter into it under a specified load. The result is expressed as the Brinell hardness number, which is the value obtained by dividing the applied load in kilograms by the surface area of the resulting impression in square millimeters. | Diameter of impression mm | Hardness Number | Tonne/m2 | | 2.0 | 946 | 324424 | | 2.1 | 857 | 294502 | | 2.2 | 782 | 269304 | | 2.3 | 713 | 244106 | | 2.4 | 652 | 223632 | | 2.5 | 600 | 206309 | | 2.6 | 555 | 190560 | | 2.7 | 512 | 176386 | | 2.8 | 477 | 163787 | | 2.9 | 444 | 152763 | | 3.0 | 418 | 143314 | | 3.1 | 387 | 132290 | | 3.2 | 364 | 124415 | | 3.3 | 340 | 116541 | | 3.4 | 321 | 110241 | | 3.5 | 302 | 103942 | | 3.6 | 286 | 97642 | | 3.7 | 269 | 92918 | | 3.8 | 255 | 86618 | | 3.9 | 241 | 81894 | | 4.0 | 228 | 78744 | | 4.1 | 217 | 74019 | | 4.2 | 207 | 70869 | | 4.3 | 196 | 67720 | | 4.4 | 187 | 64570 | | 4.5 | 179 | 62208 | | 4.6 | 170 | 60633 | | 4.7 | 163 | 59058 | | 4.8 | 156 | 56696 | | 4.9 | 149 | 53546 | | 5.0 | 143 | 51971 | | 5.1 | 137 | 49609 | | 5.2 | 131 | 47246 | | 5.3 | 126 | 45671 | | 5.4 | 121 | 44097 | | 5.5 | 116 | 41734 | | 5.6 | 112 | 40159 | | 5.7 | 107 | 38584 | | 5.8 | 103 | 37010 | | 5.9 | 99 | 35828 | | 6.0 | 95 | 34647 | | 6.1 | 92 | 33072 | | 6.2 | 89 | 32285 | | 6.3 | 86 | 31104 | | 6.4 | 82 | 29923 | | 6.5 | 80 | 29135 | | 6.6 | 77 | 27954 | | 6.7 | 74 | 26773 | | 6.8 | 71.5 | 25985 | | 6.9 | 69 | 25198 |
See also: Hardness, Knoop Hardness Test.
  
Subjects:- Mechanical Engineering
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