Диаметру отпечатка и для перевода значений твердости, определяемой
Различными методами
Твердость | ||||||||
по Бринеллю | по Роквеллу | |||||||
шарик D = 10 мм P = 3000 кгс | алмазный конус | шарик | ||||||
диаметр отпечатка, мм | HB | HRA | HRC | HRB | ||||
2,25 | 83,0 | 70,0 | — | |||||
2,30 | 82,0 | 68,0 | — | |||||
2,35 | 82,0 | 66,0 | — | |||||
2,40 | 82,0 | 64,0 | — | |||||
2,45 | 81,0 | 62,0 | — | |||||
2,50 | 81,0 | 59,0 | — | |||||
2,55 | 80,0 | 57,0 | — | |||||
2,60 | 79,0 | 56,0 | — | |||||
2,65 | 78,0 | 54,0 | — | |||||
2,70 | 77,5 | 52,5 | — | |||||
2,75 | 76,0 | 51,0 | — | |||||
2,80 | 76,0 | 49,5 | — | |||||
2,85 | 75,0 | 48,0 | — | |||||
2,90 | 74,0 | 47,0 | — | |||||
2,95 | 73,0 | 45,5 | — | |||||
3,00 | 73,0 | 44,0 | — | |||||
3,05 | 72,0 | 42,0 | — | |||||
3,10 | 71,0 | 41,0 | — | |||||
3,15 | 70,0 | 39,5 | — | |||||
3,20 | 70,0 | 39,0 | — | |||||
3,25 | 69,0 | 38,0 | — | |||||
3,30 | 69,0 | 37,0 | — | |||||
3,35 | 68,0 | 36,0 | — | |||||
3,40 | 68,0 | 35,0 | — | |||||
3,45 | 67,0 | 33,5 | — | |||||
3,50 | 67,0 | 33,0 | — | |||||
3,55 | 66,0 | 31,0 | — | |||||
3,60 | 66,0 | 30,0 | — | |||||
3,65 | 65,0 | 29,0 | — | |||||
3,70 | 65,0 | 28,0 | — | |||||
3,75 | 64,0 | 27,0 | — | |||||
3,80 | 64,0 | 26,0 | — | |||||
3,85 | 63,0 | 25,0 | — | |||||
3,90 | 63,0 | 24,0 | ||||||
3,95 | 62,0 | 23,0 | ||||||
4,00 | 62,0 | 22,0 | ||||||
4,05 | 61,0 | 21,0 | ||||||
Окончание таблицы 3.2
Твердость | |||||
по Бринеллю | по Роквеллу | ||||
шарик D = 10 мм P = 3000 кгс | алмазный конус | шарик | |||
диаметр отпечатка, мм | HB | HRA | HRC | HRB | |
4,10 | 61,0 | 20,0 | |||
4,15 | 60,0 | 19,0 | |||
4,20 | 60,0 | 18,0 | |||
4,25 | 59,0 | — | |||
4,30 | 58,0 | — | |||
4,35 | 58,0 | — | |||
4,40 | 57,0 | — | |||
4,45 | 56,0 | — | |||
4,50 | 56,0 | — | |||
4,55 | 55,0 | — | |||
4,60 | 55,0 | — | |||
4,65 | 54,0 | — | |||
4,70 | 53,0 | — | |||
4,75 | 53,0 | — | |||
4,80 | 52,0 | — | |||
4,85 | 52,0 | — | |||
4,90 | 51,0 | — | |||
4,95 | 50,0 | — | |||
5,00 | 50,0 | — | |||
5,05 | — | — | |||
5,10 | — | — | |||
5,15 | — | — | |||
5,20 | — | — | |||
5,25 | — | — | |||
5,30 | — | — | |||
5,35 | — | — | |||
5,40 | — | — | |||
5,45 | — | — | |||
5,50 | — | — | |||
5,55 | — | — | |||
5,60 | — | — | |||
5,65 | — | — | |||
5,70 | — | — | |||
5,75 | — | — | |||
5,80 | — | — | |||
5,85 | — | — | |||
5,90 | — | — | |||
5,95 | — | — | |||
6,00 | — | — | |||
Лабораторная работа 4
МИКРОСТРУКТУРА НАИБОЛЕЕ РАСПРОСТРАНЕННЫХ МЕТАЛЛОВ И СПЛАВОВ
Дата добавления: 2015-02-07; просмотров: 2064;