Kimble IN-3, Sealing Glass

Kimble has not produced IN-3 glass in over a decade, but now our supplier has been licensed by Kimble Glass of Vineland, NJ to produce this excellent sealing glass. This glass was developed to seal to 96% alumina ceramic, tantalum and 42% nickel iron alloy (ASTM F30) It is available in flake; ground and screened, spray dried or blended.

Glass Code: Kimble IN-3^®			IN-3
Type			Borosilicate
Color
Principal Use : Alumina ceramic, tantalum and nickel/iron alloy			Sealing
Thermal Expansion	Multiply by 10^-7cm/cm/°C	0 - 300°C.	56.0
Thermal Contraction		25°C. to setting point	71.0
Working Point		Log viscosity=4	1055º C
Softening Point		ASTM-C-338	710º C
Annealing Point		ASTM-C-336	521º C
Strain Point		ASTM-C-336	479º C
Density-annealed gm/cc			2.32
Log₁₀ of Volume Resistivity ohm/cm.		250°C	7.1
		350°C.	5.7
Dielectric Properties (1 MHz 25°C)		Dielectric constant	6.7
		Loss factor %	4.0
Refractive index			1.49