Fluke Ti20 user manual

Ti20

Users Manual

Table C-1. Emissivity Values for Metals (cont)

			Emissivity
	Material
		1.0 µm	1.6 µm	8 to14 µm
Tin (Unoxidized)		0.25	0.1-0.3	n.r.
Titanium
	Polished	0.5-0.75	0.3-0.5	n.r.
	Oxidized	n.r.	0.6-0.8	0.5-0.6
Tungsten		n.r.	0.1-0.6	n.r.
	Polished	0.35-0.4	0.1-0.3	n.r.
Zinc
	Oxidized	0.6	0.15	0.1
	Polished	0.5	0.05	n.r.

Table C-2. Emissivity Values for Non-Metals

	Material		Emissivity
		1.0 µm	1.6 µm	8 to 14 µm
Asbestos		0.9	0.9	0.95
Asphalt		n.r.	0.95	0.95
Basalt		n.r.	0.7	0.7
Carbon
	Unoxidized	0.8-0.95	0.8-0.9	0.8-0.9
	Graphite	0.8-0.9	0.7-0.9	0.7-0.8
Carborundum		n.r.	0.9	0.9
Ceramic		0.4	0.85-0.95	0.95
Clay		n.r.	0.85-0.95	0.95
Concrete		0.65	0.9	0.95
Cloth		n.r.	0.95	0.95
Glass
	Plate	n.r.	0.98	0.85
	“Gob”	n.r.	0.9	n.r.
Gravel		n.r.	0.95	0.95
Gypsum		n.r.	0.4-0.97	0.8-0.95
Ice		n.r.	—	0.98

C-4