Emissivity Coefficients
Reference data and engineering information about emissivity coefficients for heat transfer applications.
emissivitycoefficientsCalculator
Overview
Engineering reference data for Emissivity Coefficients in heat transfer.
Key Formulas
Fourier's Law
Heat flux proportional to temperature gradient.
Convective Heat Transfer
Heat transfer between surface and fluid.
Stefan-Boltzmann Law
Radiative heat flux from a surface.
Thermal Resistance
Resistance to heat conduction.
Variables
| Symbol | Description | Unit |
|---|---|---|
| Heat flux | W/m² | |
| Thermal conductivity | W/(m·K) | |
| Convection coefficient | W/(m²·K) | |
| Temperature | K | |
| Emissivity | — | |
| Stefan-Boltzmann constant | 5.67×10⁻⁸ W/(m²·K⁴) |
Data Table
136 rows
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| Alloy 24ST Polished |
| Alumina, Flame sprayed |
| Aluminum Commercial sheet |
| Aluminum Foil |
| Aluminum Commercial Sheet |
| Aluminum Heavily Oxidized |
| Aluminum Highly Polished |
| Aluminum Anodized |
| Aluminum Rough |
| Aluminum paint |
| Anodize black |
| Antimony, polished |
| Asbestos board |
| Asbestos paper |
| Asphalt |
| Basalt |
| Beryllium |
| Beryllium, Anodized |
| Bismuth, bright |
| Black Body Matt |
| Black lacquer on iron |
| Black Parson Optical |
| Black Silicone Paint |
| Black Epoxy Paint |
| Black Enamel Paint |
| Brass Dull Plate |
| Brass Rolled Plate Natural Surface |
| Brass Polished |
| Brass Oxidized 600 oC |
| Brick, red rough |
| Brick, fire-clay |
| Cadmium |
| Carbon, not oxidized |
| Carbon filament |
| Carbon pressed filled surface |
| Cast Iron, newly turned |
| Cast Iron, turned & heated |
| Cement |
| Cromium polished |
| Clay |
| Coal |
| Concrete |
| Concrete, rough |
| Concrete tiles |
| Cotton cloth |
| Copper electroplated |
| Copper heated & covered with thick oxide layer |
| Copper Polished |
| Copper Nickel Alloy, polished |
| Glass smooth |
| Glass, pyrex |
| Glass, opal |
| Gold not polished |
| Gold highly polished |
| Granite, natural surface |
| Gravel |
| Gypsum |
| Ice smooth |
| Ice rough |
| Inconel X Oxidized |
| Iron polished |
| Iron, plate rusted red |
| Iron, dark gray surface |
| Iron, rough ingot |
| Lampblack paint |
| Lead pure unoxidized |
| Lead Oxidized |
| Limestone |
| Lime wash |
| Magnesia |
| Magnesite |
| Magnesium Oxide |
| Magnesium Polished |
| Marble White |
| Masonry Plastered |
| Mercury liquid |
| Mild Steel |
| Molybdenum polished |
| Mortar |
| Nickel, elctroplated |
| Nickel, polished |
| Nickel, oxidized |
| Nichrome wire, bright |
| Oak, planed |
| Oil paints, all colors |
| Paper offset |
| Plaster |
| Platinum, polished plate |
| Pine |
| Plaster board |
| Porcelain, glazed |
| Paint |
| Paper |
| Plaster, rough |
| Plastics |
| Polypropylene |
| Polytetrafluoroethylene (PTFE) |
| Polyethylene, black plastic |
| Porcelain glazed |
| Pyrex |
| PVC |
| Quartz glass |
| Roofing paper |
| Rubber, foam |
| Rubber, hard glossy plate |
| Rubber, natural hard |
| Rubber, natural oft |
| Salt |
| Sand |
| Sandstone |
| Sapphire |
| Sawdust |
| Silica |
| Silicon Carbide |
| Silver Polished |
| Snow |
| Soil |
| Steel Oxidized |
| Steel Polished |
| Stainless Steel, weathered |
| Stainless Steel, polished |
| Stainless Steel, type 301 |
| Steel Galvanized Old |
| Steel Galvanized New |
| Thoria |
| Tile |
| Tin unoxidized |
| Titanium polished |
| Tungsten polished |
| Tungsten aged filament |
| Water (0 - 100 oC) |
| Wood Beech, planned |
| Wood Oak, planned |
| Wood, Pine |
| Wrought Iron |
| Zinc Tarnished |
Source: engineeringtoolbox.com