Type of impact device |
DC(D)/DL |
D+15 |
C |
G |
E |
Impacting energy Mass of impact body |
11mJ 5.5g/7.2g |
11mJ 7.8g |
2.7mJ 3.0g |
90mJ 20.0g |
11mJ 5.5g |
Test tip hardness:Dia. Test tip: Material of test tip: |
1600HV3mm Tungsten carbide |
1600HV3mm Tungsten carbide |
1600HV3mm Tungsten carbide |
1600HV5mm Tungsten carbide |
5000HV3mm synthetic diamond |
Impact device diameter:Impact device length: Impact device weight: |
20mm 86(147)/ 75mm 50g |
20mm162mm 80g |
20mm141mm 75g |
30mm254mm 250g |
20mm155mm 80g |
Max. hardness of sample |
940HV |
940HV |
1000HV |
650HB |
1200HV |
Mean roughness value of sample surface Ra: |
1.6μm |
1.6μm |
0.4μm |
6.3μm |
1.6μm |
Min. weight of sample:Measure directlyNeed support firmly Need coupling tightly |
>5kg2~5kg 0.05~2kg |
>5kg2~5kg 0.05~2kg |
>1.5kg0.5~1.5kg 0.02~0.5kg |
>15kg5~15kg 0.5~5kg |
>5kg2~5kg 0.05~2kg |
Min. thickness of sample Coupling tightly Min. layer thickness for surface hardening |
5mm ≥0.8mm |
5mm ≥0.8mm |
1mm ≥0.2mm |
10mm ≥1.2mm |
5mm ≥0.8mm |
Size of tip indentation |
Hardness 300HV |
Indentation diameter Depth of indentation |
0.54mm 24μm |
0.54mm 24μm |
0.38mm 12μm 1.03mm 53μm |
0.54mm 24μm |
Hardness 600HV |
Indentation diameter Depth of indentation |
0.54mm 17μm |
0.54mm 17μm |
0.32mm 8μm 0.90mm 41μm |
0.54mm 17μm |
Hardness 800HV |
Indentation diameter Depth of indentation |
0.35mm 10μm |
0.35mm 10μm |
0.35mm 7μm -- -- |
0.35mm 10μm |
Available type of impact device |
DC: Test hole or hollow cylindrical; DL:Testslender narrow groove or hole |
D+15: Test groove or reentrant surface |
C: Test small,light,thin parts and surface of hardened layer G: Test large, thick,heavy and rough surface steel |
E: Test super high hardness material |