PROPERTIES of BOROSILICATE

MECHANICAL PROPERTIES
Density : 2.76 g/cm3

THERMAL PROPERTIES
Softening Point : 844°C
Annealing Point : 593°C
Max Service Temperature : 639°C
Thermal Expansion Coefficient : 46 x10-7 °C-1 aT 0...300°C

ELECTRICAL PROPERTIES
Dielectric Constant at 1MHz a 20°C : 5.84

OPTICAL PROPERTIES

Transmission (0.5mm thick)	:70% a 320nm
	: 90% a 360nm
	: 90% a 380...2200nm
Refraction Index	: 1.5440 a 435,8nm
	: 1.5354 a 546,1nm
	: 1.5311 a 643,8nm