EOT - EQ. BK7 GLASS


Thermal properties

Thermal Expansion	7.1 x 10^-6/°C (-30° a +70°C)
	8.3 x 10^-6/°C (20° a 3000°C)
Transformation Temperature	557°C

Mechanical properties

Young Modulus	8.20 x 10⁹ dyn/mm2
Knoop Hardness	610
Poisson constant	0.206

Optical properties

Transmission	see graph below

Transmission Curve