RayTek ThermoView Ti30 user manual Aluminum Unoxidized

Table 1. Emissivity Values for Metals

	Material		Emissivity
		1.0µm	1.6µm	8-14µm
Aluminum
	Unoxidized	0.1-0.2	0.02-0.2	n.r.
	Oxidized	0.4	0.4	0.2-0.4
	Alloy A3003,
	Oxidized	n.r.	0.4	0.3
	Roughened	0.2-0.8	0.2-0.6	0.1-0.3
	Polished	0.1-0.2	0.02-0.1	n.r.
Brass
	Polished	0.8-0.95	0.01-0.05	n.r.
	Burnished	n.r.	n.r.	0.3
	Oxidized	0.6	0.6	0.5
Chromium		0.4	0.4	n.r.
Copper
	Polished	n.r.	0.03	n.r.
	Roughened	n.r.	0.05-0.2	n.r
	Oxidized	0.2-0.8	.2-0.9	0.4-0.8
	Electrical Terminal Blocks	n.r.	n.r.	0.6
Gold		0.3	0.01-0.1	n.r.
Haynes Alloy		0.5-0.9	0.6-0.9	0.3-0.8
Inconel
	Oxidized	0.4-0.9	0.6-0.9	0.7-0.95
	Sandblasted	0.3-0.4	0.3-0.6	0.3-0.6
	Electropolished	0.2-0.5	0.25	0.15
Iron
	Oxidized	0.4-0.8	0.5-0.9	0.5-0.9
	Unoxidized	0.35	0.1-0.3	n.r.
	Rusted	n.r.	0.6-0.9	0.5-0.7
	Molten	0.35	0.4-0.6	n.r.
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
July 1, 2003		- 68 -		Version 1.0

i Tel: (01943) 602001- WWW.ISSLTD.CO.UK - Fax: (01943) 816796 i