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The ability of a glass or glass surface to resist chemical alteration under defined exposure conditions.
GlassRenu · Educational illustration
Meaning and boundaries
Chemical durability is not one universal number. Results depend on glass composition, surface condition, chemical, concentration, temperature, time, and the measurement method.
Why it matters in glass restoration
It provides the parent concept for water, acid, and alkali resistance without implying that one laboratory test predicts every field condition.
Related terms
References
- Pilkington / NSG Group — Durability of Glass
Publisher’s original source - International Organization for Standardization — ISO 695:1991 — Glass resistance to boiling mixed alkali
Publisher’s original source - International Organization for Standardization — ISO 719:2020 — Hydrolytic resistance of glass grains at 98 °C
Publisher’s original source - International Organization for Standardization — ISO 1776:1985 — Resistance to hydrochloric-acid attack at 100 °C
Publisher’s original source