| PROPERTY |
ENGLISH & METRIC SYSTEM VALUE |
INTERNATIONAL SYSTEM OF UNITS (SI) VALUE |
| Density |
2.2 gm/cm³ |
2.2 x 10³ kg/m³ |
| Hardness |
5.5-6.5 Mohs' Scale 570KHN |
N/A |
| Design Tensile Strengh |
7000 psi |
4.8 x 10^7 Pa (N/m²) |
| Design Compressive Strength |
Greater than 160,000 psi |
Greater than 1.1 x 10^9 Pa |
| Bulk Modulus |
5.3 x 10^5 psi |
3.7 x 10^10 Pa |
| Rigidity Modulus |
4.5 x 10^4 psi |
7.2 x 10^10 Pa |
| Young's Modulus |
10.5 x 10^6 psi |
7.2 x 10^10 Pa |
| Poisson's Ratio |
0.17 |
0.17 |
| Coefficient of Thermal |
5.5 x 10^7cm/cm·˚C |
5.5 x 10^-7m/m·˚K |
| Expansion |
(20˚C - 320˚C) |
(293˚K-593˚K) |
| Thermal Conductivity (20˚C) |
3.3 x 10^5 gm cal·cm/cm² ·sec·˚C |
1.4 W/m·˚K |
| Specific Heat (20˚) |
0.16gm cal/gm |
670 J/kg·˚K |
| Softening Point |
1683˚C |
1956˚ |
| Annealing Point |
1215˚C |
1488˚ |
| Strain Point |
1120˚C |
1393˚ |
| Electrical Resistivity |
7 (10^7) ohm·cm (350˚C) |
7(107)ohm-m |
| Dielectric Properties |
(20˚C and 1 MHz) |
(293˚K and 1 MHz) |
| Constant |
3.75 |
3.75 |
| Strength |
5 x 10^7 volts/mil |
5 x 10^7 V/m |
| Loss Factor |
Less than 4 x 10^-4 |
Less than 4 x 10^-4 |
| Dissipation Factor |
Less than 1 x10^-4 |
Less than 1 x 10^-4 |
| Index of Refraction Constrigence (Nu value) |
1.4585 |
1.4585 |
| Fused Quartz |
67.56 |
67.56 |
| Velocity of Sound-Shear Wave |
3.75 x 10^6 cm/sec |
3.75 x 10³ m/s |
| Velocity of Sound/ Compressional
Wave |
5.90 x 10^6 cm/sec |
5.90 x 10³ m/s |
| Sonic Attenuation |
Less than 11db/m·MHz |
Less than 11 db/m·MHz |
| Permeability Contants |
(cm·mm/ cm·sec·cm of Hg-700˚C/973˚K) |
N/A |
| Helium |
210 x 10^-19 |
N/A |
| Hydrogen |
21 x 10^-10 |
N/A |
| Deutrium |
17 x 10^-10 |
N/A |
| Neon |
905 x 10^-10 |
N/A |