METERS
Hardness
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 diam.:
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
MRC.07.14
Testing conditions:
Hardness
300HV
Indentation diam.
Depth of indentation
0.54mm
24μm
0.54mm
24μm
0.38mm
12μm
1.03mm
53μm
0.54mm
24μm
Hardness
600HV
Indentation diam.
Depth of indentation
0.54mm
17μm
0.54mm
17μm
0.32mm
8μm
0.90mm
41μm
0.54mm
17μm
Hardness
800HV
Indentation diam.
Depth of indentation
0.35mm
10μm
0.35mm
10μm
0.35mm
7μm
-
-
0.35mm
10μm
Size of tip indentation:
Support rings for Shaped Materials:
Other type of support rings:
No.
Type Sketch of non-conventional Supporting ring
Remarks
1
Z10-15
For testing cylindrical outside surface R10 ~ R15
2
Z14.5-30
For testing cylindrical outside surface R14.5 ~ R30
3
Z25-50
For testing cylindrical outside surface R25 ~ R50
4
HZ11-13
For testing cylindrical inside surface R11 ~ R13
5
HZ12.5-17
For testing cylindrical inside surface R12.5 ~ R17
6
HZ16.5-30
For testing cylindrical inside surface R16.5 ~ R30
7
K10-15
For testing spherical outside surface SR10 ~ SR15
8
K14.5-30
For testing spherical outside surface SR14.5 ~ SR30
9
HK11-13
For testing spherical inside surface SR11 ~ SR13
10 HK12.5-17
For testing spherical inside surface SR12.5 ~ SR17
11 HK16.5-30
For testing spherical inside surface SR16.5 ~ SR30
12
UN
For testing cylindrical outside surface,
radius adjustable R10 ~ ~
~
212
