Impact Hardness Testers
Series 640
FEATURES
Range | Accuracy |
Application Range |
Impact Devices | Impact Capacity | Code No. |
(170-960) HLD (17-68.5) HRC (19-651) HB |
HLD: ±5 HRC: ±1 HB: ±4 |
Test the normal smooth, flat surface |
D | 11 Nmm | 640-17-1 |
(170-960) HLD (17-68.5) HRC (19-651) HB |
HLD: ±5 HRC: ±1 HB: ±4 |
Test hole or hollow cylindrical | DC | 11 Nmm | 640-17-2 |
(170-960) HLD (17-68.5) HRC (19-651) HB |
HLD: ±5 HRC: ±1 HB: ±4 |
Test small, light, thin parts and surface of hardened layer |
C | 2.7 Nmm | 640-17-3 |
(170-960) HLD (17-68.5) HRC (19-651) HB |
HLD: ±5 HRC: ±1 HB: ±4 |
Test groove or re-entrant surface |
D+15 | 11 Nmm | 640-17-4 |
(170-960) HLD (17-68.5) HRC (19-651) HB |
HLD: ±5 HRC: ±1 HB: ±4 |
Test slender narrow groove or hole |
DL | 11 Nmm | 640-17-5 |
(170-960) HLD (17-68.5) HRC (19-651) HB |
HLD: ±5 HRC: ±1 HB: ±4 |
Test large, thick, heavy and rough surface steel |
G | 90 Nmm | 640-17-6 |