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Pyroceram® III
DESCRIPTION
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Glass Type
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glass ceramic
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Color
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transparent
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Forms Available
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rolled sheet
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Principal Uses
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woodburning stove windows
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PROPERTIES
| Thermal: |
Coefficient of expansion (20 - 700°C)
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3.0 x 10-7/°C
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| Specific Heat (25 - 100°C) | 0.8 J/g°C | |
| Maximum Temperature for continuous use | 700°C | |
| Thermal Stress Resistance | ΔT max 700°C | |
| Thermal Shock Resistance |
ΔT max 700°C
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| Optical: | Refractive Index | 1.55 |
| ABBE number | 55.4 | |
| UV Transmission < 1% for wavelengths < 355 nm (3 mm Thickness | ||
| Photo elastic Coefficient | 3.11 Brewster | |
| Mechanical: | Density |
2.55 g/cm3
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| Young's Modulus |
9.43 x 103 kg/mm2
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Poisson's Ratio
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0.25
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| Knoop Hardness (1n) |
705
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Chemical:
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Acid Resistance
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DIN 12116
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Class1
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Alkali Resistance
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ISO 695
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Class1
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Hydrolic Resistance
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ISO 719
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Class1
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| Electrical: |
102 Hz
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104 Hz
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| Dielectric Constant |
8.1
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7.5
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| Dissipation Factor |
4.0 x 10-3
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17 x 10-3
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| Resistivity: Log |
ρ (Ω x cm)
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6.8 @ 250°C
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5.4 @ 350°C
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2.7 @ 700°C
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| Other: |  |