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Annealing Calculator

Calculate annealing soak time and cooling schedule based on glass thickness and type.

Inputs

mm

Results

Annealing Temperature

510°C

Annealing Hold Time

1.0 hr

Initial Cooling Rate

50°C/hr

Strain Point470°C

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Tips

1
Annealing time increases with the square of thickness. A 2" piece needs 4x longer than 1".
2
Never rush the cooling phase. Thermal stress from fast cooling causes invisible cracks.

Open formula

Soak Time = Base Time × (Thickness / Reference)²

Annealing time increases with the square of thickness. Thicker pieces need exponentially longer soaks.

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