Borosilicate glass differs from standard glass primarily due to its composition. It contains a high percentage of silica combined with boron trioxide, which significantly alters how the glass behaves under thermal and chemical stress.
From a manufacturing perspective, producing borosilicate glass is not a simple melt-and-form process. Raw material batching, melting temperatures, forming techniques, and controlled annealing must be precisely managed to achieve uniform structure and stress-free glass. The industrial benchmark grade, commonly referred to as borosilicate glass 3.3, is widely used because of its predictable thermal expansion and long-term stability in process environments.
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