Fluke Ti20 user manual Appendices

					Appendices	C
					Typical Emissivity Values
		Table C-1. Emissivity Values for Metals (cont)
				Emissivity
	Material
			1.0 µm	1.6 µm	8 to14 µm
Iron, Cast
	Oxidized		0.7-0.9	0.7-0.9	0.6-0.95
	Unoxidized		0.35	0.3	0.2
	Molten		0.35	0.3-0.4	0.2-0.3
Iron, Wrought
	Dull		0.9	0.9	0.9
Lead
	Polished		0.35	0.05-0.2	n.r.
	Rough		0.65	0.6	0.4
	Oxidized		n.r.	0.3-0.7	0.2-0.6
Magnesium			0.3-0.8	0.05-0.3	n.r.
Mercury			n.r.	0.05-0.15	n.r.
Molybdenum
	Oxidized		0.5-0.9	0.4-0.9	0.2-0.6
	Unoxidized		0.25-0.35	0.1-0.35	0.1
Monel (Ni-Cu)			0.3	0.2-0.6	0.1-0.14
Nickel
	Oxidized		0.8-0.9	0.4-0.7	0.2-0.5
	Electrolytic		0.2-0.4	0.1-0.3	n.r.
Platinum
	Black		n.r.	0.95	0.9
Silver			n.r.	0.02	n.r.
Steel
	Cold-Rolled		0.8-0.9	0.8-0.9	0.7-0.9
	Ground Sheet		n.r.	n.r.	0.4-0.6
	Polished Sheet		0.35	0.25	0.1
	Molten		0.35	0.25-0.4	n.r.
	Oxidized		0.8-0.9	0.8-0.9	0.7-0.9
	Stainless		0.35	0.2-0.9	0.1-0.8

C-3