1.properties are in accordance with table 1
| item mm
properties |
200×200 400×115 |
400×400 | |
| Resistivity not over
μΩ·m |
class a | 10.0 | 11.0 |
| class b | 12.0 | 12.0 | |
| Bulk density not below
g/cm3 |
1.52 | 1.52 | |
| Ash not over
% |
0.5 | 0.5 | |
| Modulus of compression not below
MPa |
19.6 | 17.6 | |
2.dimension and allowable tolerance should be in accordance with table 2
table 2 unit:mm
| Dimension | L | allowable tolerance |
| 200×200×L | ≤2400 | According to standard YB2818-2005 |
| 400×400×L 400×500×L |
≤2700 | |
| 400×600×L 500×500×L 500×600×L 515×450×L |
≤2400 | |
| 500×660×L 500×600×L 550×600×L 600×600×L 515×450×L |
≤3390 |