The coefficient of linear thermal expansion measures the change in length per unit length of a material per unit change in temperature. Expressed as in/in/°F or cm/cm/°C, the CLTE is used to calculate the dimensional change resulting from thermal expansion. CLTE is especially important when components of an assembly have widely varying thermal expansion coefficients. Thermal expansion of a material is another important design factor, particularly in applications where plastic parts composed of Bayblend ET1000 resin are mated with metal parts or parts having metal inserts. Coefficient of linear thermal expansion was measured on injection molded samples according to ASTM D 696. Injection molding of these samples provided better consistency on repeat testing than values from sheet-extruded samples, though the numbers were close. Molding under ISO conditions minimizes molded-in orientation and results in more accurate values. Material in/in/°F x 10-5 cm/cm/°C x 10-5 Liquid Crystal (glass reinforced) 0.3 0.6 Polycarbonate (glass reinforced) 1.2 2.2 Nylon (glass reinforced) 1.3 2.3 TP Polyester (glass reinforced) 1.4 2.5 ABS (glass reinforced) 1.7 3.1 Polypropylene (glass reinforced) 1.8 3.2 Epoxy (glass reinforced) 2.0 3.6 Polyphenylene sulfide (glass reinforced) 2.0 3.6 Acetal (glass reinforced) 2.2 4.0 Epoxy 3.0 5.4 Polycarbonate 3.6 6.5 Acrylic 3.8 6.8 ABS 4.0 7.2 Nylon 4.5 8.1 Acetal 4.8 8.5 Polypropylene 4.8 (.000048) 8.6 TP Polyester 6.9 12.4 Polyethylene 7.2 13.0 Note: Above table factors are averaged for a given plastic type; thus, the factor will vary depending upon the actual grade of given plastic type. POLYPROPYLENE EXAMPLE: Factor Distance Temp. Chng. Expansion .000048 x 24" = .001152 x 60 DegF = .0690"
It will de specific to the specific grade/brand. It is similar to many polymers, around 7 x 10-5
it is rather high - about 125 parts per million per degree Celsius
5 x 10-6 k-1
0.0000055
thermal expansion depends on Temperature and material of steel
Since most metals are isotropic, the cubical coefficient of expansion is three times the linear coefficient of expansion. The linear coefficient of expansion is obtained from measurement and tables for the specific material which are readily available.
nickel
Thermal expanasion coefficient fro monel is 0,0000075 m/mºC. More info at http://www.engineeringtoolbox.com/linear-expansion-coefficients-d_95.html
Why aluminium has high thermal expansion coefficient than Copper?"
0.0000055
thermal expansion depends on Temperature and material of steel
Linear expansion apparatus is the apparatus used to measure the objects to these following properties: -> coefficient linear expansion -> coefficient thermal expansion -> specific gravity -> specific heat -> thermal conductivity -> thermal resistivity -> breaking strength and many others..
Since most metals are isotropic, the cubical coefficient of expansion is three times the linear coefficient of expansion. The linear coefficient of expansion is obtained from measurement and tables for the specific material which are readily available.
nickel
0.00245 1/k
Thermal expanasion coefficient fro monel is 0,0000075 m/mºC. More info at http://www.engineeringtoolbox.com/linear-expansion-coefficients-d_95.html
The coefficient of thermal expansion of ethanol at 20 degrees Celsius, in volumetric terms, is 750*10-6 per Kelvin.The coefficient of thermal expansion of ethanol at 20 degrees Celsius, in volumetric terms, is 750*10-6 per Kelvin.The coefficient of thermal expansion of ethanol at 20 degrees Celsius, in volumetric terms, is 750*10-6 per Kelvin.The coefficient of thermal expansion of ethanol at 20 degrees Celsius, in volumetric terms, is 750*10-6 per Kelvin.
http://www.engineeringtoolbox.com/linear-expansion-coefficients-d_95.html
The coefficient of thermal expansion depends on the temperature and pressure. It a pressure of 1 atmosphere the coefficient of thermal expansion are:at 4 deg C : –0.1321 at 20 deg C : 0.1212 at 50 deg C : 0.4280 at 100 deg C: 0.7454.
Thermal expansion coefficient is how matter reacts to temperature, one of the best places to find information for free is at your local library in the encyclopedia or online in a few places, Wikipedia is often a good source for research, there are also various engineering sites that will show up from searching the words "thermal expansion coefficient" that will give the information,