| GRADES |
101 |
201 |
501 |
| COLOR |
light grey |
dark grey |
brown |
| PHYSICAL PROPERTIES |
|
| Specific Gravity (g/cc) |
3.248 |
3.248 |
4.00 |
| Crystal Size Range (microns) |
0.635-10.16 |
0.508-10.16 |
0.305- 1.02 |
| MECHANICAL PROPERTIES |
|
| Youngs Modulus at 20çC (GPa) |
289.38 |
– |
– |
|
Flexural Strength at 20çC (GPa)
|
944 |
827 |
827 |
| at 1000çC (GPa) |
– |
689 |
– |
| Compressive Strength at 20çC |
>3493 |
– |
– |
|
Tensile Strength (GPa)
|
448 |
– |
– |
| Kic 20çC (MPam1/2) |
7.7 |
4.51 |
5.83 |
| Hardness (R60N) |
91.1 |
92.7 |
90.9 |
| THERMAL PROPERTIES |
|
| Thermal Conductivity (W/mK) |
|
at 20çC
|
21.31 |
21.31 |
19.15 |
at 800çC
|
– |
– |
– |
|
Coefficient of Thermal Expansion
20ç-1200çC (10-6/çC)
|
3.042 |
3.042 |
5.58 |
| Max. Use Temp/No Load (çC) |
999 |
1399 |
799 |
