Appendix
Unit
Impact device type
D/DC
D+15
DL
C
G
E
Cast aluminum
HB
30~ 165
—
—
—
—
—
Brass
HB
40 ~173
—
—
—
—
—
HRB
13 ~95
—
—
—
—
—
Bronze
HB
60 ~290
—
—
—
—
—
Wrought copper
HB
45 ~315
—
—
—
—
—
The QH5 D only works with impact device types D and DC.
The QH5 G only works with impact device type G.
The QH5 M works will all impact devices.
Do not measure over an indentation caused by a previous
measurement.
The surface you are measuring must clean and dry.
The minimum surface roughness requirements needed to obtain
precise measurements are:
Impact device type
D/DC
D+15
DL
C
G
E
Surface condition (rugosity)
Rugosity
N7
N7
N7
N5
N9
N7
Rugos. RT (µm)
10
10
10
2,5
30
10
Rugos. RA (µm)
2
2
2
0,4
7
2