Corning Vycor® 7904 Blue Glass

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Corning Vycor® 7904 Blue Glass (discontinued **)
Categories:	Ceramic; Glass; Optical; Oxide; Silicon Oxide
Material Notes:	Absorbs yellow wavelengths and causes light transmitted through the glass to have a higher color temperature. Cobalt is introduced into the glass structure; therefore a lamp can be produced without the issues of burn-off and light scatter that coated lamps have. Blue VYCOR can be run in high temperature lamp manufacturing processes without additional cost or process steps. Special Features: Superior optical quality Tight dimensional control Thermal and chemical properties ideally suited to high temperatures. Excellent thermal shock resistance Information provided by Corning Incorporated.
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Thermal Properties	Original Value	Comments

CTE, linear	0.850 µm/m-°C @Temperature 20.0 °C
Softening Point	1005 °C
Annealing Point	900 °C

Optical Properties	Original Value	Comments
Transmission, Visible	53 - 61 % @Thickness 1.00 mm, Wavelength 590 nm	tubing
	62 - 70 % @Thickness 1.00 mm, Wavelength 500 nm	tubing
	82 - 90 % @Thickness 1.00 mm, Wavelength 400 nm	tubing
IR Transmittance	92 % @Thickness 1.00 mm, Wavelength 800 nm	tubing
UV Transmittance	<= 1.0 % @Thickness 1.00 mm, Wavelength 200 nm	tubing
	73 % @Thickness 1.00 mm, Wavelength 300 nm	tubing

Component Elements Properties	Original Value	Comments
SiO2	96 %

**
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CCORNV00 / 746

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