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Ti20

Users Manual

C-2

Table C-1. Emissivity Values for Metals

Emissivity

Material

1.0 µm 1.6 µm 8 to 14 µm

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.

1 2 ... 57 58 59 60 61 62 63 64 65 66 67 68

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