Sample Material
Scale
Impact Device
D/DC
D+15
C
G
DL
LD: 200-900
LD+15: 300-900
LC: 350-950
LG: 300-750
LDL: 560-950
Steel and Cast Steel
HRC
17.9-68.5
19.3-67.9
20-69.5
..
20-68
HRB
59.6-99.5
.
.
47.7-99.9
37-100
HB
127-651
80-638
80-683
90-646
81-646
HV
83-976
80-937
80-996
.
80-950
HS
32.2-99.5
33.3-99.3
31.9-99.6
.
30-96
CWT, ST, Tool Steel
HRC
20.4-67.1
19.8-68.2
20.7-68.2
.
.
HV
80-898
80-935
100-941
.
.
Stainless Steel
HRB
46.5-101.7
.
.
.
.
HB
85-655
.
.
.
.
HV
85-802
.
.
.
.
Gray Cast Iron
HB
93-334
.
.
92-326
.
Nodular Cast Iron
HB
131-387
.
.
127-364
.
Cast Aluminum
HB
19-164
.
23-210
32-168
.
HRB
23.8-84.6
.
22.7-85
23.8-85.5
.
Brass
HB
40-173
.
.
.
.
HRB
13.5-95.3
.
.
.
.
Bronze
HB
60-290
.
.
.
.
Copper
HB
45-315
.
.
.
.