 |
Main
workpiece material groups and their characteristic
letters |
Brinell
Hardness
HB |
R2414(LC610M)
fz = mm
Preferable Method=Wet |
| Workpiece
material |
0.8-0.15

|
0.16-0.35
 |
0.36-0.5
 |
| P |
Unalloyed
steel1) |
ca
0.15 % C annealed |
125 |
|
|
|
| ca
0.45 % C annealed |
190 |
|
|
|
| ca
0.45 % C hardened and temp. |
250 |
|
|
|
| ca
0.75 % C annealed |
270 |
|
|
|
| ca
0.75 % C hardened and temp. |
300 |
|
|
|
|
Low-alloy steel 1) |
annealed |
180 |
|
|
|
| hardened
and temp. |
275 |
|
|
|
| hardened
and temp. |
300 |
|
|
|
| hardened
and temp. |
350 |
|
|
|
| High-alloy
steel and high-alloy tool steel 1) |
annealed |
200 |
|
|
|
| hardened
and temp. |
325 |
|
|
|
| Stainless
steel1) |
ferritic/martensitic,annealed |
200 |
|
|
|
| martensitic,
hardened and temp. |
240 |
|
|
|
| M |
Stainless
steel1) |
austenitic
2) |
180 |
|
|
|
| K |
Grey
cast iron |
perlitic/ferritic |
180 |
160 |
100 |
90-180 |
| perlitic
(martensitic) |
260 |
|
|
|
| Nodular
graphite cast iron |
ferritic |
160 |
|
|
|
| perlitic |
250 |
|
|
|
| Malleable
cast iron |
ferritic |
130 |
|
|
|
| perlitic |
230 |
|
|
|
| N |
Aluminium
wrought alloys |
unhardenable |
60 |
1200 |
900 |
700 |
| hardenable/hardened |
100 |
900 |
600 |
400 |
| Aluminium
cast alloys |
<=
12% Si. unhardenable |
75 |
1000 |
700 |
500 |
| <=
12% Si. hardenable/hardened |
90 |
700 |
500 |
300 |
| >12%
Si. unhardenable |
130 |
500 |
300 |
250 |
| Copper
and copper alloys (Bronze/Brass) |
Free
cutting alloys Pb>1% |
110 |
550 |
250 |
200 |
| Brass,
red bronze |
90 |
450 |
220 |
150 |
| Bronze,
non leaded copper and electrolytic copper |
100 |
400 |
200 |
100 |
| Nonmetallic
materials |
Duaroplastics,
Fibre reinforced plastics |
|
100 |
80 |
60 |
| sert
kauçuk |
|
|
|
|
| S |
Heat
resistant alloys |
Fe-based
Ni or
Co-based |
annealed |
200 |
|
|
|
| hardened |
280 |
|
|
|
| annealed |
250 |
|
|
|
| hardened |
350 |
|
|
|
| cast |
320 |
|
|
|
| Titanium
alloys |
pure
titanium |
Rm
3)400 |
|
|
|
| alpha+beta
alloys, hardened |
Rm
3)1050 |
|
|
|
| H |
Hardened
steel |
hardened
and temp. |
55HRC4) |
|
|
|
| hardened
and temp. |
60HRC4) |
|
|
|
| Chilled
cast iron |
cast |
400 |
|
|
|
| Hardened
cast iron |
hardened
and temp. |
55HRC4) |
|
|
|