Coefficients of Linear Thermal Expansion

Linear temperature expansion coefficients for aluminum, copper, glass, iron and other common materials

When an object is heated or cooled, its length change by an amount proportional to the original length and the change in temperature.

Thermal expansion coefficients for some common materials:

ProductLinear Temperature Expansion Coefficient
- α -
10-6
(m/(m K))

ABS (Acrylonitrile butadiene styrene) thermoplastic 72 - 108
ABS -glass fiber-reinforced 31
Acetals 85 - 110
Acetal - glass fiber-reinforced 39
Acrylic 68 - 75
Alumina (aluminium oxide, Al2O3) 8.1
Aluminum 21 - 24
Aluminum nitride 5.3
Amber 50 - 60
Antimony 9 - 11
Arsenic 4.7
Bakelite, bleached 22
Barium 20.6
Barium ferrite 10
Benzocyclobutene 42
Beryllium 12
Bismuth 13 - 13.5
Brass 18 - 19
Brick masonry 5
Bronze 17.5 - 18
Cadmium 30
Calcium 22.3
Cast Iron Gray 10.8
Caoutchouc 66 - 69
Celluloid 100
Cellulose acetate (CA) 130
Cellulose acetate butynate (CAB) 96 - 171
Cellulose nitrate (CN) 80 - 120
Cement, Portland 11
Cerium 5.2
Chlorinated polyether 80
Chlorinated polyvinylchloride (CPVC) 63 - 66
Chromium 6 - 7
Clay tile structure 5.9
Cobalt 12
Concrete 13 - 14
Concrete structure 9.8
Constantan 15.2 - 18.8
Copper 16 - 16.7
Copper, Beryllium 25 17.8
Corundum, sintered 6.5
Cupronickel 30% 16.2
Diamond (Carbon) 1.1 - 1.3
Duralumin 23
Dysprosium 9.9
Ebonite 70
Epoxy, cast resins & compounds, unfilled 45 - 65
Epoxy - glass fiber reinforced 36
Erbium 12.2
Ethylene ethyl acrylate (EEA) 205
Ethylene vinyl acetate (EVA) 180
Europium 35
Fluoroethylene propylene (FEP) 135
Fluorspar, CaF2 19.5
Gadolinium 9
Germanium 6.1
German silver 18.4
Glass, hard 5.9
Glass, Pyrex 4.0
Glass, plate 9.0
Gold 14.2
Gold - copper 15.5
Gold - platinum 15.2
Granite 7.9 - 8.4
Graphite, pure (Carbon) 7.8
Gunmetal 18
Gutta percha 198
Hafnium 5.9
Hard alloy K20 6
Hastelloy C 11.3
Holmium 11.2
Ice, 0oC water 51
Inconel 11.5 - 12.6
Indium 33
Invar 1.5
Iridium 6.4
Iron, pure 12.0
Iron, cast 10.4 - 11
Iron, forged 11.3
Kapton 20
Lanthanum 12.1
Lead 29
Limestone 8
Lithium 46
Lutetium 9.9
Macor 9.3
Magnalium 23.8
Magnesium 25 - 26.9
Manganese 22
Manganin 18.1
Marble 5.5 - 14.1
Masonry, brick 4.7 - 9.0
Mercury 61
Mica 3
Molybdenum 5
Monel metal 13.5
Mortar 7.3 - 13.5
Neodymium 9.6
Nickel 13.0
Niobium (Columbium) 7
Nylon, general purpose 50 - 90
Nylon, glass fiber reinforced 23
Nylon, Type 11, molding and extruding compound 100
Nylon, Type 12, molding and extruding compound 80.5
Nylon, Type 6, cast 85
Nylon, Type 6/6, molding compound 80
Oak, perpendicular to the grain 54
Osmium 5 - 6
Palladium 11.8
Paraffin 106 - 480
Phenolic resin without fillers 60 - 80
Phosphor bronze 16.7
Plaster 17
Plastics 40 - 120
Platinum 9
Plutonium 47 - 54
Polyacrylonitrile 70
Polyallomer 92
Polyamide (PA) 110
Polybutylene (PB) 130 - 139
Polycarbonate (PC) 65 - 70
Polycarbonate - glass fiber-reinforced 21.5
Polyester 124
Polyester - glass fiber-reinforced 25
Polyethylene (PE) 108 - 200
Polyethylene (PE) - High Molecular Weight 108
Polyethylene terephthalate (PET) 59.4
Polyphenylene 54
Polyphenylene - glass fiber-reinforced 36
Polypropylene (PP), unfilled 72 - 90
Polypropylene - glass fiber-reinforced 32
Polystyrene (PS) 70
Polysulfone (PSO) 55 - 60
Polytetrafluorethylene (PTFE) 112 - 135
Polyurethane (PUR), rigid 57.6
Polyvinyl chloride (PVC) 54 - 110
Polyvinylidene fluoride (PVDF) 128 - 140
Porcelain, Industrial 4
Potassium 83
Praseodymium 6.7
Promethium 11
Quartz 8 - 14
Rhenium 6.7
Rhodium 8
Rock salt 40.4
Rubber, hard 80
Ruthenium 9.1
Samarium 12.7
Sandstone 11.6
Sapphire 5.3
Scandium 10.2
Selenium 37
Silicon 3 - 5
Silicon Carbide 2.77
Silver 19 - 19.7
Sitall 0.15
Slate 10
Sodium 70
Solder lead - tin, 50% - 50% 25
Speculum metal 19.3
Steatite 8.5
Steel 11 - 12.5
Steel Stainless Austenitic (304) 17.3
Steel Stainless Austenitic (310) 14.4
Steel Stainless Austenitic (316) 16.0
Steel Stainless Ferritic (410) 9.9
Strontium 22.5
Tantalum 6.5
Tellurium 36.9
Terbium 10.3
Terne 11.6
Thallium 29.9
Thorium 12
Thulium 13.3
Tin 20 - 23
Titanium 8.5 - 9
Topas 5 - 8
Tungsten 4.5
Uranium 13.4
Vanadium 8
Vinyl Ester 16 - 22
Vulcanite 63.6
Wax 2 - 15
Wedgwood ware 8.9
Wood, fir 3.7
Wood, parallel to grain 3
Wood, across (perpendicular) to grain 30
Wood, pine 5
Ytterbium 26.3
Yttrium 10.6
Zinc 30 - 35
Zirconium 5.7

  m/m = meter per meter, in/in = inches per inches

Most values for temperature 25 oC (77 oF). The span in the values may be caused by the variation in the materials themselves - or by the variation in the sources used.

  • tK = tC + 273.16
  • tR = tF + 459.67  
  • 1 in (inch) = 25.4 mm
  • 1 ft (foot) = 0.3048 m

Related Topics

  • Temperature Expansion - Thermal expansion of pipes and tubes - stainless steel, carbon steel, copper, plastics and more
  • Thermodynamics - Effects of work, heat and energy on systems
  • Material Properties - Material properties for gases, fluids and solids - densities, specific heats, viscosities and more

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  • en: linear temperature expansion coefficients
  • es: coeficientes de expansión lineal de la temperatura
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