GE 214 Fused Quartz Glass Properties

GE 214^® Fused Quartz Tubing

The worldwide standard for clear fused quartz lamp tubing. GE 214 is a high purity, high transmittance, high temperature material with a low hydroxyl (OH)- content. It is suitable for a broad range of mercury, halogen and other quartz lamp applications.

GE 214 ^® Quartz		214
Type		Fused Quartz
Color		Clear
Principal Use		High temperature
Thermal Expansion 10^-7cm/cm/°C	20 - 320°C.	5.5
Thermal Conductivity	W/m .°C	1.4
Specific Heat	J/kg °C	670
Softening Point	°C	1683
Annealing Point	°C	1215
Strain Point	°C	1120
Design Tensile Strength (4.8 x 10 ⁷ Pa)		7000 psi
Design Compression Strength (greater than 1.1 x 10 ⁹ Pa)		160,000 psi
Hardness	5.5-6.5 Moh's Scale 570 KHN 100
Density kg/m³		2.2
Young's Modulus (10.5 x 10)		6 psi
Constringency	(Nu)	67.56
Velocity of Sound-Shear Wave		3.7 x 10 3 m/s
Velocity of Sound/Compression Wave		5.9 x 10 3 m/s
Sonic Attenuation	db/m MHz	<11
Dielectric Properties (1 MHz 20°C)	Strength	5x10x7V/m
	Dielectric constant	3.75
	Loss factor	<4x10^-4
Refractive index		1.4585

Permeability Constants 700 °C (cm3 mm/cm² sec cm of Hg)
Helium	210 x 10^-10
Hydrogen	21 x 10 ^-10
Deuterium	17 x 10 ^-10
Neon	9.5 x 10 ^-10