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Technical Data for Portable Hardness Tester Impact Devices
Note: Impact device D is standard device on all models. Specification is identical.
| Display type | D/DC/DL | D+15 | C | G |
|---|---|---|---|---|
| Impact energy | 11Nmm | 11Nmm | 3Nmm | 90Nmm |
| Mass of the impact body | 5. 5g | 7. 8g | 3. 0g | 20g |
| DL: 7.3g | ||||
| Test tip | ||||
| * Hardness | 1600HV | 1600HV | 1600HV | 1600HV |
| * Diameter | 3mm | 3mm | 3mm | 5mm |
| * Material | Tungsten | Tungsten | ||
| * | carbide | carbide | ||
| Impact device | ||||
| * Diameter | 20mm | 20mm | 20mm | 30mm |
| * Length | 147/86mm | 162mm | 141mm | 254mm |
| * Weight | 75/50g | 80g | 75g | 250g |
| Max. hardness of sample | 940HV | 940HV | 1000HV | 650HB |
| Preparation of surface | ||||
| * Roughness class ISO | N7 | N7 | N5 | N9 |
| * Max. roughness depth Rt | 10 µ m | 10 µ m | 2.5 µ m | 30 µ m |
| * Average roughness Ra | 2 µ m | 2 µ m | 0. 4 µ m | 7 µ m |
| Min. weight of sample | ||||
| * Of compact shape | 5kg | 5kg | 1.5kg | 15kg |
| * On solid support | 2kg | 2kg | 0.5kg | 5kg |
| * Coupled on plate | 0. 1kg | 0. 1kg | 0. 02kg | 0. 5kg |
| Min. thickness of sample | ||||
| * Coupled | 3mm | 3mm | 1mm | 10mm |
| * Min. thickness of layers | 0. 8mm | 0. 8mm | 0. 2mm | – |
| * Indentation of test tip | ||||
| * With 300 HV | ||||
| * Diameter | 0. 54mm | 0. 54mm | 0. 38mm | 1.03mm |
| * Depth | 24 µ m | 24 µ m | 12 µ m | 53 µ m |
| * With 600 HV | ||||
| * Diameter | 0. 45mm | 0. 45mm | 0. 32mm | 0.90mm |
| * Depth | 17 µ m | 17 µ m | 8 µ m | 41 µ m |
| * With 800 HV | ||||
| * Diameter | 0. 35mm | 0. 35mm | 0. 30mm | – |
| * Depth | 10 µ m | 10 µ m | 7 µ m | – |







