| 1. Deviations in Length & Width |
± 0.5 % |
± 0.3 % |
| 2. Deviations in Thickness |
± 0.5 % |
± 0.5 % |
| 3. Straightness of Side |
± 0.5 % |
± 0.3 % |
| 4. Rectengularity |
± 0.6 % |
± 0.5 % |
| 5. Surface Flatness |
± 0.5 % |
± 0.3 % |
| 6. Surface Quality |
Min 95% of Tiles should be free from visible defects. |
> 95% |
| B ) PHYSICAL PROPERTIES |
| 1. Water Absorption |
< 20% |
< 18% |
| 2. Modulus of Rupture |
> 150 Kg/Cm2 |
> 180 Kg/Cm2 |
| 3. Scratch Hardness |
Min 3 Moh's |
> 3 Moh's |
| 4. Crazing Resistance |
1 Cycle |
Passes 4 Cycle |
| C ) CHEMICAL PROPERTIES |
| 1. Staining Resistance |
Min Class 2 |
Resistance |
| 2. Household Chemicals |
Min Class B |
Resistance |
| 3. Scratch Resistance |
Min 3 |
Min 3 |
| D ) THERMAL PROPERTIES |
| 1. Thermal Shock Resistance |
10 Cycles |
Resistance |
| 2. Thermal Expansion |
9x10-6 - K-1 max |
Conforms |
