Impacting Energy: | 90mJ | Dia. Test Tip: | 5mm |
---|---|---|---|
Test Tip Hardness: | 1600HV | Material Of Test Tip: | Tungsten Carbide |
Impact Device Diam: | 30mm | Available Type Of Impact Device: | Test Large, Thick,heavy And Rough Surface Steel |
High Light: | digital hardness meter,digital hardness tester |
G type impact device,G probe of Leeb hardness tester with impacting energy 90mJ
Features:
Impact device G Enlarged test tip, increased impact energy (approx. 9 times that of type D). Low demands on measuring surface finish.
For measurements in the Brinell range only (max. 650 HB)
Application: Solid components e.g. heavy castings and forings
work principle:Its basic principle is that an impact body with a certain mass impacts the sample surface under a certain test force. The impact speed and rebound speed of the impact body at a distance of 1 mm from the sample surface are measured. Using the electromagnetic principle, the induction is proportional to the speed. Voltage.
Material | Method | Impact device | |||||
D/DC | D+15 | C | G | E | DL | ||
Steel and cast steel
|
HRC | 20~68.5 | 19.3~67.9 | 20.0~69.5 | 22.4~70.7 | 20.6~68.2 | |
HRB | 38.4~99.6 | 47.7~99.9 | 37.0~99.9 | ||||
HRA | 59.1~85.8 | 61.7~88.0 | |||||
HB | 127~651 | 80~638 | 80~683 | 90~646 | 83~663 | 81~646 | |
HV | 83~976 | 80~937 | 80~996 | 84~1042 | 80~950 | ||
HS | 32.2~99.5 | 33.3~99.3 | 31.8~102.1 | 35.8~102.6 | 30.6~96.8 | ||
Cold work tool steel |
HRC | 20.4~67.1 | 19.8~68.2 | 20.7~68.2 | 22.6~70.2 | ||
HV | 80~898 | 80~935 | 100~941 | 82~1009 | |||
Stainless steel
|
HRB | 46.5~101.7 | |||||
HB | 85~655 | ||||||
HV | 85~802 | ||||||
Grey cast iron
|
HRC | ||||||
HB | 93~334 | 92~326 | |||||
HV | |||||||
Nodular cast iron | HRC | ||||||
HB | 131~387 | 127~364 | |||||
HV | |||||||
Cast aluminium alloys | HB | 19~164 | 23~210 | 32~168 | |||
HRB | 23.8~84.6 | 22.7~85.0 | 23.8~85.5 | ||||
BRASS(copper-zinc alloys)
|
HB | 40~173 | |||||
HRB | 13.5~95.3 | ||||||
BRONZE(copper-aluminium/tin alloys) | HB | 60~290 | |||||
Wrought copper alloys | HB | 45~315 | |||||
Available type of impact device |
DC: Test hole or hollow cylindrical
|
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 | DL: Test slender narrow groove or hole |
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: |
1600HV 3mm Tungsten carbide |
1600HV 3mm Tungsten carbide |
1600HV 3mm Tungsten carbide |
1600HV 5mm Tungsten carbide |
5000HV 3mm synthetic diamond |
Impact device diameter: Impact device length: Impact device weight: |
20mm 86(147)/ 75mm 50g |
20mm 162mm 80g |
20mm 141mm 75g |
30mm 254mm 250g |
20mm 155mm 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 directly Need support firmly Need coupling tightly |
>5kg 2~5kg 0.05~2kg |
>5kg 2~5kg 0.05~2kg |
>1.5kg 0.5~1.5kg 0.02~0.5kg |
>15kg 5~15kg 0.5~5kg |
>5kg 2~5kg 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 |
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-- |
0.35mm
10μ |