featured Borosilicate Glass vs. Fused Silica: Which Should You Choose?
Borosilicate glass and fused silica both handle heat better than ordinary glass, but they're not interchangeable. Fused silica pushes every one of borosilicate's advantages further — at a meaningfully higher price. Key Comparison Property Borosilicate Glass Fused Silica Composition SiO2 + B2O3 (+ minor oxides) 99.9%+ pure SiO2 Thermal expansion coefficient ~3.3 × 10⁻⁶ /°C ~0.5 × 10⁻⁶ /°C Max use temperature...
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