High hardness
Technical characteristics of grinding balls, 5 group of hardness
Diameter, mm | Hardness, HRC | Chemical composition | ||||||
Surface | Volumetric* | C,% | Mn,% | Si,% | Cr,% | Р,% | S,% | |
25 | 62-66 | Min 60 | 0,70-0,90 | 0,80-1,00 | 0,50- 1,00 | 0,20-0,40 | Max 0,04 | Max 0,04 |
30 | 62-66 | Min 60 | 0,70-0,90 | 0,80-1,00 | 0,50- 1,00 | 0,20-0,40 | Max 0,04 | Max 0,04 |
40 | 62-66 | Min 60 | 0,80-1,00 | 1,00-1,20 | 0,50- 1,00 | 0,30-0,50 | Max 0,04 | Max 0,04 |
50 | 60-64 | Min 60 | 0,80-1,00 | 1,00-1,20 | 0,50- 1,00 | 0,30-0,50 | Max 0,04 | Max 0,04 |
60 | 60-64 | Min 60 | 0,90-1,20 | 1,00-1,20 | 0,50- 1,00 | 0,40-0,70 | Max 0,04 | Max 0,04 |
70 | 60-64 | Min 60 | 0,90-1,20 | 0,90-1,20 | 0,70- 1,50 | 0,70-1,50 | Max 0,04 | Max 0,04 |
80 | 58-62 | Min 56 | 0,90-1,20 | 0,90-1,20 | 0,70- 1,50 | 0,70-1,50 | Max 0,04 | Max 0,04 |
90 | 58-62 | Min 56 | 0,90-1,20 | 0,90-1,20 | 0,70- 1,50 | 0,70-1,50 | Max 0,04 | Max 0,04 |
100 | 58-62 | Min 56 | 0,90-1,20 | 0,90-1,20 | 0,70- 1,50 | 0,70-1,50 | Max 0,04 | Max 0,04 |
120 | 58-62 | Min 56 | 0,90-1,20 | 0,90-1,20 | 0,70- 1,50 | 0,70-1,50 | Max 0,04 | Max 0,04 |
This information is for informational purposes only. The chemical composition of the grinding media can differ from the provided in the table and agreed with each client individually.
*VH= 0,289 Тsurf+ 0,436 Т0,25 + 0,203Т0,5 + 0,063Т0,75 + 0,009 Тc
Where :
- VH - volumetric hardness;
- Тsurf - hardness value on the surface of the ball;
- Т0,25 - hardness value at 0,25 of the radius of the ball;
- Т0,5 - hardness value at 0,5 of the radius of the ball;
- Т0,75 - hardness value at 0,75 of the radius of the ball;
- Тc - hardness value in the center of the ball;