What are the properties of Borosilicate Glass?

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Update Time:2018-04-02

What are the properties of Borosilicate Glass?

	Metric	US
Coefficient of mean linear thermal	3.3 · 10-6 K-1	3.3 · 10-6 K-1
expansion a acc. to DIN ISO 7991	(20 °C; 300 °C)	(68 °F; 572 °F)
Transformation temperature Tg	525 °C	977 °F
Density r at 25 °C	2.23 g · cm-3	139.2 lb · ft-3
Modulus of elasticity E (Young’s modulus)	63 · 103 N · mm-2	91 · 105 lb · in-2 (psi)
Poisson’s ratio m	0.20	0.20
Thermal conductivity lw at 90 °C	1.2 W · m-1 · K-1	0.69 Btu · hr -1 · ft-1 · °F-1
Refractive index (l = 587.6 nm) nd	1.473	1.473
Stress-optical coefficient (DIN 52 314) K	4.0 · 10-6 mm2 · N -1	4.0 · 10-6 mm2 · N-1

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