Specifications for Low chrome content

Sizes and hardness according to GOST-R 7524-89 standard:

Rated diameter

Nominal diameter

Tolerance of nominal diameter

Estimated nominal capacity, cm 3

Estimated nominal weight, kg


Hardness, 
HRC

15

15

±1,0

1,76

0,014

60-65

20

20

4,18

0,033

60-65

25

25

8,18

0,064

60-65

30

31,5

±2,0

16,4

0,128

60-65

40

41,5

37,4

0,294

60-65

50

52

±3,0

74

0,58

60-65

60

62

125

0,98

60-65

70

73

204

1,6

55-58

80

83

299

2,35

55-58

90

94

±4,0

435

3,41

53-55

100

104

589

4,62

53-55

110

114

±4,0

776

6,09

52-54

120

125

±5,0

1 023

8,03

52-54

If needed other sizes or hardness - we can make by special order


Quality / Manufacturing Certificate GOST 7524-89
Density min. 7850 kg / m3
A homogeneous dense structure.

Chemical content:

C

Mn

Si

P

S

Cr

Ni

Cu

Ti

V

0.6-0.9

0.6-0.9

0.15-0.35

0.04-0.35

0.04-0.06

0.14-0.30

0.03-0.25

0.053-0.25

0.004

0.03

Chemical composition always defined in more detail in connection with the order

 

Other sizes and hardnesses may be manufactured by special order

Products

Testing

Grinding Balls

    Finer Grinding

     Finer Grinding