Tempered Glass

Advantages
High Strength: 3-5 times the impact and flexural strength of ordinary annealed glass.
Good Thermal Resistance: Can withstand temperature differences up to approximately 200°C (392°F), offering excellent thermal stability against thermal shock.
High Safety: Breaks into small, blunt granules (dice-like pieces) rather than sharp, jagged shards, reducing the risk of injury.
Disadvantages
Cannot Be Re-Worked: Cutting, drilling, or edge grinding must be done before the tempering process. It cannot be modified after tempering.
Risk of Spontaneous Breakage: May self-explode without external impact due to nickel sulfide inclusions or internal stress.