_technical properties
Specific weight |
Refractive index |
Softening point |
Coefficient of lineal expansion (bet. 0 & 300º)
|
Young modulus |
Mohs hardness scale |
ROCKWELL (c) |
|---|---|---|---|---|---|---|
2,45 a 2,48 Kg/dm3 |
1,51 a 1,53 |
730 ºC |
85 x 10-7 |
7 x 105 Kg/cm2 |
4 |
48 Rc |
Specific heat at 20 ºC |
At 1000 ºC |
Thermic conductivity at 20 ºC |
Dialectric constat (1Mc at 20 ºC) |
Volume resistivity at 250 ºC |
Dialectric strength |
Thermic difussion |
|---|---|---|---|---|---|---|
0,18 Cal/gr/ºC |
0,32 Cal/gr/ºC |
0,018 Cal/seg/cm/ºC |
7,0 a 7,6 |
106,5 a 107 Ohms |
4500 KV/cm |
0,005 cm2/seg |