Selitys HRA: sta, HRC: stä, HV -termeistä
1 ， HRA-porausbitti on 120+-0,5 ° Diamond-kartiomainen runko, jonka yläkaarevuus on 0,2+-0,002 mm ja kuorma 60 kg.
2 ， HRC-porausbitti on 120+-0,5 ° Diamond-kartiomainen runko, yläkaarevuus 0,2+-0,002 mm ja kuorma 150 kg
3 ， HV -diagonaalinen pinta, joka on 136 ° neljännespyramidi timanttiporausbitti, kovuusarvo on spesifinen paine sisennysyksikön alueelle, kuorma on 50/100 gramman voima, sisennysalue on useita UM, arvo on kg/mm
| HV | HRC | HRA | HV | HRC | HRA | HV | HRC | HRA |
| 1700.0 | 80.5 | 92,5 | 528.0 | 51.0 | 76.0 | 31.0 | 66.0 | |
| 1600.0 | 80.0 | 92.0 | 513.0 | 50.0 | 76.0 | 301.0 | 30.0 | 66.0 |
| 1550.0 | 79,0 | 91.5 | 498.0 | 49,0 | 76.0 | 29,0 | 65,0 | |
| 1500.0 | 78.0 | 91.0 | 48.5 | 75,0 | 28.5 | 65,0 | ||
| 1450.0 | 77,0 | 90.5 | 485,0 | 48.0 | 75,0 | 285,0 | 28.0 | 65,0 |
| 1400.0 | 76.0 | 90.0 | 47,5 | 74,5 | 27.5 | 64,5 | ||
| 1350.0 | 75,0 | 89,5 | 471.0 | 47,0 | 74,0 | 27.0 | 64,0 | |
| 1300.0 | 74,0 | 89,0 | 458.0 | 46.0 | 73.5 | 26.5 | 64,0 | |
| 1250.0 | 73.0 | 88,5 | 45,0 | 73.0 | 271.0 | 26.0 | 64,0 | |
| 1200.0 | 72,0 | 88.0 | 446.0 | 44,5 | 73.0 | 25,5 | 63.5 | |
| 1150.0 | 71.5 | 87,5 | 435,0 | 44,0 | 73.0 | 25.0 | 63.0 | |
| 1140.0 | 71.0 | 87,0 | 43.5 | 72,5 | 24.5 | 63.0 | ||
| 1076.0 | 70.0 | 86,5 | 43.0 | 72,0 | 257,0 | 24.0 | 62,5 | |
| 1004,0 | 69,0 | 86.0 | 413.0 | 42,0 | 72,0 | 23.5 | 62.0 | |
| 942.0 | 68.0 | 85,8 | 41.5 | 71.5 | 23.0 | 62.0 | ||
| 894,0 | 67,0 | 85,0 | 41.0 | 71.0 | 22.5 | 62.0 | ||
| 854,0 | 66.0 | 84,5 | 40.5 | 70,5 | 22.0 | 62.0 | ||
| 820.0 | 65,0 | 84,0 | 393.0 | 40.0 | 70,5 | 21.5 | 61.5 | |
| 789,0 | 64,0 | 83.5 | 39,5 | 70.0 | 21.0 | 61.0 | ||
| 763.0 | 63.0 | 83.0 | 39,0 | 70.0 | 20.5 | 61.0 | ||
| 739,0 | 62.0 | 82,5 | 38.5 | 69,5 | 236.0 | 20.0 | 61.0 | |
| 716.0 | 61.0 | 82,0 | 373.0 | 38.0 | 69,0 | 223.0 | 19.5 | 60.5 |
| 695,0 | 60.0 | 81.5 | 37,5 | 69,0 | 217,0 | 19.0 | 60.0 | |
| 675,0 | 59,0 | 81.0 | 37,0 | 69,0 | 18.5 | 60.0 | ||
| 655,0 | 58.0 | 80.5 | 36.5 | 68,5 | 209,0 | 18.0 | 60.0 | |
| 636.0 | 57,0 | 80.0 | 353.0 | 36.0 | 68.0 | 205,0 | 60.0 | |
| 56,5 | 79,5 | 35,5 | 68.0 | 197.0 | 59,0 | |||
| 617,0 | 56,0 | 79,0 | 35,0 | 67,5 | 195.0 | 58.0 | ||
| 598.0 | 55,0 | 78.0 | 334,0 | 34,5 | 67,0 | 191.0 | 57,5 | |
| 580.0 | 54,0 | 78.0 | 34.0 | 67,0 | 186.0 | 56,0 | ||
| 562,0 | 53.0 | 78.0 | 33.5 | 67,0 | ||||
| 545,0 | 52,0 | 77,0 | 317,0 | 32.0 | 67,0 | |||
| 51.5 | 76,5 | 31.5 | 66.0 |
Viestin aika: huhtikuu 18-2024