Materials | Glass Ceramics | Corning(R) PYROCERAM(R) Glass Ceramic

Glass Type: Glass Ceramics

Description

Corning(R) PYROCERAM(R) is a transparent glass-ceramic having almost a zero thermal expansion. It is an excellent choice for applications when there is the probability of high heat and cold shock. PYROCERAM(R) is widely used for residential applications such as fireplace and wood burning stove windows, oven windows, broiler windows and other such appliances. PYROCERAM(R) is also used in architectural and outdoor lighting, electronics, UV light-wave blocking applications and chemical process sight glass.

Thermal Properties			Mechanical Properties
Thermal Coefficient of Expansion	0± 3.0 x 10-7 K-1	Density	2.51 g/cm3 (at 20°C/68°F)
Annealing Point	547°C/ 1017° F	Knoop Hardness	705 kg/mm2
Softening Point	N/A	Young's Modulus	94.3 Gpa
Strain Point	700°C/ 1292° F	Poisson's Ratio	0.25

Thermal Properties

Mechanical Properties

Thermal Coefficient of Expansion

0± 3.0 x 10-7 K-1

Density

2.51 g/cm3 (at 20°C/68°F)

Annealing Point

547°C/ 1017° F

Knoop Hardness

705 kg/mm2

Softening Point

N/A

Young's Modulus

94.3 Gpa

Strain Point

700°C/ 1292° F

Poisson's Ratio

0.25

Chemical Properties			Electrical Properties
Hydrolytic Resistance	Class1	Dielectric Constant	E=8.1 MHz @R.T.
Acid Resistance	Class1	Resistivity	log10 ρ 6.8 at 250° C (482°F)
Alkali Resistance	Class1	Dielectric Strength	N/A

Chemical Properties

Electrical Properties

Hydrolytic Resistance

Class1

Dielectric Constant

E=8.1 MHz @R.T.

Acid Resistance

Class1

Resistivity

log10 ρ 6.8 at 250° C (482°F)

Alkali Resistance

Class1

Dielectric Strength

N/A

Optical Properties
Refractive Index	1.55

Optical Properties

Refractive Index

1.55