The emissivity coefficient - ε - indicates the radiation of heat from a body according the Stefan-Boltzmann Law, compared with the radiation of heat from a ideal black body where the emissivity coefficient ε = 1.
The emissivity coefficient - ε - for some common qualities of aluminum:
- ε -
|Oxidized at 1110oF (599oC)||390 (199)||0.11|
|Oxidized at 1110oF (599oC)||1110 (599)||0.19|
|Heavily Oxidized||200 (93)||0.20|
|Heavily Oxidized||940 (504)||0.31|
|Highly Polished||212 (100)||0.09|
|Roughly Polished||212 (100)||0.18|
|Commercial Sheet||212 (100)||0.09|
|Highly Polished Plate||440 (227)||0.04|
|Highly Polished Plate||1070 (577)||0.06|
|Bright Rolled Plate||338 (170)||0.04|
|Bright Rolled Plate||932 (500)||0.05|
|Alloy A3003, Oxidized||600 (316)||0.40|
|Alloy A3003, Oxidized||900 (482)||0.40|
|Alloy 1100-0||200-800 (93-427)||0.05|
|Alloy 24ST||75 (24)||0.09|
|Alloy 24ST, Polished||75 (24)||0.09|
|Alloy 75ST||75 (24)||0.11|
|Alloy 75ST, Polished||75 (24)||0.08|
The relatively low emissivity coefficient makes aluminum a suitable product for limiting the radiated heat from a body. Its by example common to use aluminum coating in rescue and survival equipment for outdoor operations.
Work, heat and energy systems.
Al - Aluminum - binary eutectic alloys and their melting points.
Density, specific heat and thermal conductivity related to temperature.
Mechanical properties of aluminum alloys - tensile strength, yield strength and more.
Mechanical properties of some common aluminum alloys.
Dimensions and static parameters of aluminum channels.
Dimensions and static properties of aluminum I-beams - Imperial units.
The radiation constant is the product between the Stefan-Boltzmann constant and the emissivity constant for a material.
Heat fluxes for various cooling or heat transfer modes.
Specific heat of commonly used metals like aluminum, iron, mercury and many more - imperial and SI units.
Densities of some common metals, metallic elements and alloys - aluminum, bronze, copper, iron and more.
The melting temperatures for some common metals and alloys.
Thermal conductivities of common metals, metallic elements aand alloys.
Radiation emissivity of common materials like water, ice, snow, grass and more.
Heat transfer due to emission of electromagnetic waves is known as thermal radiation.
The radiation heat transfer emissivity coefficients for some common materials like aluminum, brass, glass and many more.
Radiation surface absorptivity.