RayTek MI Miniature Infrared Sensor Non -Metals, Tab Typical Emissivity Values for Non‐Metals

Appendix

			NON-METALS
Material			Emissivity
		3.9 µm	5 µm	8 – 14 µm
Asbestos			0.9	0.95
Asphalt			0.95	0.95
Basalt			0.7	0.7
Carbon
Unoxidized			0.8-0.9	0.8-0.9
Graphite			0.7-0.9	0.7-0.8
Carborundum			0.9	0.9
Ceramic			0.8-0.95	0.95
Clay			0.85-0.95	0.95
Concrete			0.9	0.95
Cloth			0.95	0.95
Glass
Plate			0.98	0.85
“Gob”			0.9	—
Gravel			0.95	0.95
Gypsum			0.4-0.97	0.8-0.95
Ice			—	0.98
Limestone			0.4-0.98	0.98
Paint (non-al.)			—	0.9-0.95
Paper (any color)			0.95	0.95
Plastic,	greater	than	0.95	0.95
500 µm (0.02 in) thickness
Rubber			0.9	0.95
Sand			0.9	0.9
Snow			—	0.9
Soil			—	0.9-0.98
Water			—	0.93
Wood, Natural			0.9-0.95	0.9-0.95

Tab. 11: Typical Emissivity Values for Non‐Metals

86 MI