Typical Trace Element Composition
(ppm by weight: analysis via Direct Reading Spectrometer)
| Al | As | B | Ca | Cd | Cr | Cu | Fe | K | Li | Mg | Mn | Na | Ni | P | Sb | Ti | Zr | OH |
| 14 | <0.002 | <0.02 | 0.4 | <0.01 | <0.05 | <0.05 | 0.2 | 0.6 | 0.6 | 0.1 | <0.05 | 0.7 | <0.1 | <0.2 | <0.003 | 1.1 | 0.8 | 10 |
Typical Physical Properties
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Mechanical
Density 2.2x103 kg/m3
Hardness 5.5 - 6.5 Mohs’ scale; 570
KHN100
Design Tensile Strength 4.8x107 Pa
(N/m2);7000psi
Design Compressive Strength >1.1x109
Pa;160,000psi
Bulk Modulus 3.7x1010 Pa; 5.3x106 psi
Rigidity Modulus 3.1x1010 Pa; 4.5x106 psi
Young’s Modulus 7.2x1010 Pa; 10.5x106 psi
Poisson’s Ratio 0.17
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Thermal
Coeff. of exp. (20 - 320 °C) 5.5x10-7 cm/cm
· °C
Thermal Conductivity (20 °C) 1.4 W/m · °C
Specific Heat (20 °C) 670 J/kg · °C
Softening Point 1683 °C
Annealing Point 1215 °C
Strain Point 1120 °C
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Electrical
Electrical Resistivity (350 °C) 7x107 ohm cm
Dielectric Constant (20 °C and 1MHz) 3.75
Dielectric Strength (20 °C and 1MHz) 5x107 V/m
Dielectric Loss Factor (20 °C and 1MHz) < 4x10-4
Dissipation Factor (20 °C and 1MHz) < 1x10-4
Index of Refraction 1.4585
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WHILE EVERY ATTEMPT HAS BEEN MADE TO VERIFY THE SOURCE OF THE INFORMATION, NO RESPONSIBILITY IS ACCEPTED FOR ACCURACY OF DATA.
