Nonmetals

Emissivity Table	6

Material	Emissivity (ε)
Asbestos Board	. . . . . . . . . . 0.96
Asphalt, tar, pitch	. . . . . 0.95 to 1.00
Brick – red and rough	. . . . . . . . . . 0.93
Brick – fireclay	. . . . . . . . . . 0.75
Carbon – filament	. . . . . . . . . . 0.53
Carbon – lampblack - rough deposit	. . . . 0.78 to 0.84
Glass - Pyrex, lead, soda	. . . . 0.85 to 0.95
Marble – polished light gray	. . . . . . . . . . 0.93
Paints, lacquers, and varnishes – Black matte shellac	. . . . . . . . . . 0.91
Paints, lacquers, and varnishes – aluminum paints	. . . . 0.27 to 0.67
Paints, lacquers, and varnishes – flat black lacquer	. . . . 0.96 to 0.98
Paints, lacquers, and varnishes – white enamel varnish	. . . . . . . . . . 0.91
Porcelain – glazed	. . . . . . . . . . 0.92
Quartz – opaque	. . . . 0.68 to 0.92
Roofing Paper	. . . . . . . . . 0.91
Tape – Masking	. . . . . . . . . 0.95
Water	. . . . 0.95 to 0.96
Wood – planed oak	. . . . . . . . . . 0.90

NONMETALS