BK7 wafer-Deqing Jinghui Optics Components Co.,Ltd.

item

data

Density

2,51 g/cm³

Refractive Index (nd)

1,51680

Linear Thermal Coefficient of Expansionα

1.7,1 x 10^-6/K (-30°C to 70°C)

2.8,3 x 10^-6/K ( 20 to 300°C)

Transformation Temperature

557°C

Annealing Point (1013dPa·s)

557°C

Softening Point(107.6dPa·s)

719°C