World Industry

Grade

Volume
density
(mean value)

Specific
elec.resist
(mean value)

Hardness
HRBSh
(mean value)

Recommen.
current
density

Circumferen-
tial velocity
(max.)

Recommen.
pressure on
brush

Tot.voltage
drop
(max.)

Coefficient
of friction
(max.)

Metal
content

Applications

CG 318

1,53

18

93 HR 10/20

8

80

20-25

3,8

0,40

-

Machines with steel rings for high circumferential velocities - turbogenerators, hydroalternators