Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! Radiation heat emissivity of unoxidized, oxidized and polished aluminum.
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:
Aluminum Radiation Heat Emissivity Coefficients Aluminum Temperature oF ( oC) Emissivity Coefficient - ε - Unoxidized 77 (25) 0.02 Unoxidized 212 (100) 0.03 Unoxidized 932 (500) 0.06 Oxidized 390 (199) 0.11 Oxidized 1110 (599) 0.19 Oxidized at 1110 oF (599 oC) 390 (199) 0.11 Oxidized at 1110 oF (599 oC) 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.
Related Topics Work, heat and energy systems. Related Documents 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.
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