Impact Device Type D for Hardness Tester, Portable Hardness Tester for Cast steel Cast Iron
Other type of impact devices
Material |
Method |
Impact device |
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D/DC |
D+15 |
C |
G |
E |
DL |
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Steel and cast steel
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HRC |
20~68.5 |
19.3~67.9 |
20.0~69.5 |
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22.4~70.7 |
20.6~68.2 |
HRB |
38.4~99.6 |
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47.7~99.9 |
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37.0~99.9 |
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HRA |
59.1~85.8 |
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61.7~88.0 |
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HB |
127~651 |
80~638 |
80~683 |
90~646 |
83~663 |
81~646 |
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HV |
83~976 |
80~937 |
80~996 |
|
84~1042 |
80~950 |
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HS |
32.2~99.5 |
33.3~99.3 |
31.8~102.1 |
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35.8~102.6 |
30.6~96.8 |
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Cold work tool steel |
HRC |
20.4~67.1 |
19.8~68.2 |
20.7~68.2 |
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22.6~70.2 |
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HV |
80~898 |
80~935 |
100~941 |
|
82~1009 |
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Stainless steel
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HRB |
46.5~101.7 |
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HB |
85~655 |
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HV |
85~802 |
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Grey cast iron
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HRC |
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HB |
93~334 |
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92~326 |
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HV |
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Nodular cast iron |
HRC |
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HB |
131~387 |
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127~364 |
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HV |
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Cast aluminium alloys |
HB |
19~164 |
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23~210 |
32~168 |
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HRB |
23.8~84.6 |
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22.7~85.0 |
23.8~85.5 |
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BRASS(copper-zinc alloys)
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HB |
40~173 |
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HRB |
13.5~95.3 |
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BRONZE(copper-aluminium/tin alloys) |
HB |
60~290 |
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Wrought copper alloys |
HB |
45~315 |
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Available type of impact device |
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DC: Test hole or hollow cylindrical
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D+15: Test groove or reentrant surface
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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
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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 |
Other type of support rings
No. |
Type |
Sketch of non-conventional Supporting ring |
Remarks |
1 |
Z10-15 |
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For testing cylindrical outside surface R10~R15 |
2 |
Z14.5-30 |
For testing cylindrical outside surface R14.5~R30 |
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3 |
Z25-50 |
For testing cylindrical outside surface R25~R50 |
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4 |
HZ11-13 |
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For testing cylindrical inside surface R11~R13 |
5 |
HZ12.5-17 |
For testing cylindrical inside surface R12.5~R17 |
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6 |
HZ16.5-30 |
For testing cylindrical inside surface R16.5~R30 |
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7
|
K10-15 |
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For testing spherical outside surface SR10~SR15 |
8 |
K14.5-30 |
For testing spherical outside surface SR14.5~SR30 |
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9 |
HK11-13 |
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For testing spherical inside surface SR11~SR13 |
10 |
HK12.5-17 |
For testing spherical inside surface SR12.5~SR17 |
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11 |
HK16.5-30 |
For testing spherical inside surface SR16.5~SR30 |
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12
|
UN |
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For testing cylindrical outside surface, radius adjustable R10~∞ |