Hardness and tensile strength table
Hardness tables determine the resistance of a material to be penetrated. To do this, two measurement methods are mainly used: Brinell hardness and Rockwell hardness.
Hardness and tensile strength table
| Hardness and tensile strength table Brinell and Rockwell | |||
| Brinell hardness 3000 Kg. load Steel ball Ø 10 mm. | Tensile strength Kg/mm² | Rockwell hardness | |
| Indentation diameter mm. | Hardness HB 30 | Scale C 150 Kg. load diamond cone | |
| Hardness and tensile strength table Brinell and Rockwell | |||
| Brinell hardness 3000 Kg. load Steel ball Ø 10 mm. | Tensile strength Kg/mm² | Rockwell hardness | |
| Indentation diameter mm. | Hardness HB 30 | Scale C 150 Kg. load diamond cone | |
(2,30) | (712) | — | 67 |
(2,32) | (697) | — | 66 |
(2,35) | (682) | — | 65 |
(2,37) | (668) | — | 64 |
(2,40) | (653) | (235) | 63 |
(2,43) | (639) | (230) | 62 |
(2,45) | (624) | (225) | 61 |
(2,48) | (610) | (220) | 60 |
(2,51) | (595) | (215) | 59 |
(2,54) | (581) | (209) | 58 |
(2,57) | (568) | (204) | 57 |
(2,60) | (555) | (199) | 56 |
(2,63) | (542) | (194) | 55 |
(2,66) | (529) | (189) | 54 |
(2,69) | (517) | (184) | 53 |
(2,72) | (506) | (180) | 52 |
(2,75) | (495) | (175) | 51 |
(2,78) | (484) | (171) | 50 |
(2,81) | 473 | 166 | 49 |
2,85 | 462 | 162 | 48 |
2,88 | 451 | 158 | 47 |
2,91 | 440 | 154 | 46 |
2,95 | 429 | 149 | 45 |
3,00 | 415 | 144 | 43 |
3,05 | 401 | 139 | 41 |
3,10 | 388 | 134 | 40 |
3,15 | 376 | 129 | 39 |
3,20 | 363 | 125 | 37 |
3,25 | 353 | 121 | 36 |
3,30 | 341 | 117 | 35 |
3,35 | 331 | 114 | 34 |
3,40 | 321 | 110 | 33 |
3,45 | 311 | 107 | 31 |
3,50 | 302 | 104 | 30 |
3,55 | 294 | 101 | 29 |
3,60 | 285 | 98 | 28 |
3,65 | 277 | 95 | 27 |
3,70 | 269 | 92 | 26 |
3,75 | 262 | 89 | 25 |
3,80 | 255 | 87 | 24 |
3,85 | 248 | 85 | 23 |
3,90 | 241 | 83 | 21 |
3,95 | 235 | 81 | 20 |
4,00 | 229 | 79 | 19 |
4,05 | 223 | 77 | 18 |
4,10 | 217 | 75 | (17) |
4,15 | 212 | 73 | (16) |
4,20 | 207 | 71 | (15) |
4,25 | 201 | 69 | (14) |
4,30 | 197 | 68 | (13) |
4,35 | 192 | 66 | (12) |
4,40 | 187 | 64 | — |
4,45 | 183 | 62 | — |
4,50 | 179 | 61 | — |
4,55 | 174 | 60 | — |
4,60 | 170 | 58 | — |
4,65 | 167 | 57 | — |
4,70 | 163 | 56 | — |
4,75 | 159 | 54 | — |
4,80 | 156 | 53 | — |
4,85 | 152 | 52 | — |
4,90 | 149 | 51 | — |
4,95 | 146 | 50 | — |
5,00 | 143 | 50 | — |
5,05 | 140 | 49 | — |
5,10 | 137 | 48 | — |
5,15 | 134 | 47 | — |
5,20 | 131 | 46 | — |
5,25 | 128 | 45 | — |
5,30 | 126 | 44 | — |
5,35 | 123 | 43 | — |
5,40 | 121 | 42 | — |
5,45 | 118 | 42 | — |
5,50 | 116 | 41 | — |
5,55 | 114 | 40 | — |
5,60 | 111 | 39 | — |
Brinell hardness
The Brinell hardness determines the hardness of a material through the indentation method that allows measuring the penetration of an object in the material to be studied.
In the test, the indenter is a 10 to 12 mm. diameter steel ball which stands on the material test-piece, applying a 3000 kiloponds force during a given time, causing the appearance of an indentation of certain diameter on the material.
Rockwell hardness
The Rockwell test determines the hardness of the material to be penetrated. It consists on the penetration of a ball (soft material) or diamond cone (hard material) through a load which is performed in two successive steps.
The hardness value corresponds to the difference between the penetration depths of both:
E= H – HO (H being the base load and H0 the preliminary load.)