1. Very low thermal expansion coefficient
2. Raw material with high purity, excellent chemical and physical properties
3. Precision processing technology, accurate size accuracy
4Reliable shaft head connection technology
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indices
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data
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SiO2 (wt %)
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≥99.7
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Volume density(g/cm3)
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>1.95
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Show porosity (%)
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7-11
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Compressive strength(Mpa)
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≥60
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High-temperature anti-flexural strength (Mpa)
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≥30
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Thermal expansion coefficient (×10-6/°C)
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<0.6
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Surface roughness Ra(u m)
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≤1.6
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Diameter tolerance (mm)
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±0.05
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Radial beat (mm)
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≤0.10
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