For the production of sintered products in metallurgical, electrical, aeronautical, automotive, machine-building industries (brushes for electric machines, parts made of copper powder-based dispersion-hardened composite materials, conductive tips and electrodes for welding, soldering iron tips, heavily loaded dry sliding bearings).

Particle structure

Grid size
per ISO 565, µm

Particle size, µm

Particle size distribution, %

CPR-A

CPR-B

CPR-C

CPR-D

CPR-E

CPR-F

CPR-G

CPR-H

600

≥600

–

–

–

–

–

–

–

3 max

300

≥300

–

–

–

–

–

–

3 max

10-40

250

≥250

–

–

–

–

–

–

15 max

–

212

≥212

0.5 max

0.5 max

–

–

–

–

–

50-80

180

≥180

5 max

2 max

0.5 max

–

–

–

–

–

150

≥150

–

–

1 max

0.5 max

0.5 max

–

60-90

–

106

≥106

25-45

10-30

6 max

3 max

2 max

0.5 max

–

–

75

≥75

–

–

–

10-20

10 max

–

97 min

97 min

<75

–

–

–

–

–

–

3 max

3 max

63

≥63

60-80

45-65

30-40

–

–

10 max

–

–

45

≥45

75-95

65-85

50-60

50-60

35-45

15-35

–

–

<45

5-25

15-35

40-50

40-50

55-65

65-80

–

–

Apparent density, g/cm3

2.25-2.55

2.1-2.5

1.8-2.2

2.4-3.2

Copper mass fraction, %, min

99.7

99.6

Oxygen mass fraction, %, max

0.2

0.25


Note: in the particle size value, “<” represents undersize material, “≥” represents oversize material