PROPERTY	UNIT	VALUE
MATERIAL PROPERTIES
AVG. Thermal Expan.	0-300 C	32.5 X 10^-7	18 x 10^-7
Specific Heat	25 C	0.18 cal/g C	0.18 Btu/lb*F
Thermal Diffusivity	25 C	.0069 cm^2/sec	0.00107 in^2/sec
Thermal Conduct.	25 C	.0027 cal*cm/ cm^2*sec*C	0.63 Btu*ft/ h*ft^2*F
TOTL. Normal Emissivity	100 C	0.89
Total Hemispherical Emis.	100 C	0.84
MECHANICAL PROPERTIES
Density	25 C	2.23 g/cm^2	139.2 lb/ft^3
Young's Modulus	25 C	6.1 X 10^-3 kg/mm^2	9.1 X 10^6 psi
Shear Modulus	25 C	2.67 X 10^13 kg/mm^2	3.8 X 10^6 psi
Poisson's Ratio	25 C		0.2
Abrasion Resistance			3 times greater than window glass
Annealed			1000 psi
Tempered			3000 psi
Knoop Hardness	KHN		481