Coefficients of Linear Thermal Expansion

Linear temperature expansion coefficients for some common materials as aluminum, copper, glass, iron and many more

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

Thermal expansion coefficients for some common materials are indicated in the table below:

ProductLinear Temperature Expansion Coefficient
- α -
(10-6 m/m K) *)
(10-6 in/in oF) *)
ABS (Acrylonitrile butadiene styrene) thermoplastic 73.8 41
ABS -glass fiber-reinforced 30.4 17
Acetals 106.5 59.2
Acetal - glass fiber-reinforced 39.4 22
Acrylic 75 42
Alumina 5.4 3.0
Aluminum 22.2 12.3
Amber 50 - 60
Antimony 10.4 5.8
Arsenic 4.7 2.6
Bakelite, bleached 22
Barium 20.6 11.4
Barium ferrite 10 5.6
Benzocyclobutene 42 23.3
Beryllium 11.5 6.4
Bismuth 13 7.3
Brass 18.7 10.4
Brick masonry 5.5 3.1
Bronze 18.0 10.0
Cadmium 30 16.8
Calcium 22.3 12.4
Cast Iron Gray 10.8 6.0
Caoutchouc 66 - 69
Celluloid 100
Cellulose acetate (CA) 130 72.2
Cellulose acetate butynate (CAB) 96 - 171 80 - 95
Cellulose nitrate (CN) 80 - 120 44 - 67
Cement 10.0 6.0
Cerium 5.2 2.9
Chlorinated polyether 80 44
Chlorinated polyvinylchloride (CPVC) 66.6 37
Chromium 6.2 3.4
Clay tile structure 5.9 3.3
Cobalt 12 6.7
Concrete 14.5 8.0
Concrete structure 9.8 5.5
Constantan 18.8 10.4
Copper 16.6 9.3
Copper, Beryllium 25 17.8 9.9
Corundum, sintered 6.5 3.6
Cupronickel 30% 16.2 9
Diamond (Carbon) 1.18 0.66
Duralumin 23 12.8
Dysprosium 9.9 5.5
Ebonite 76.6 42.8
Epoxy, cast resins & compounds, unfilled 45 - 65 25 - 36
Erbium 12.2 6.8
Ethylene ethyl acrylate (EEA) 205 113.9
Ethylene vinyl acetate (EVA) 180 100
Europium 35 19.4
Fluoroethylene propylene (FEP) 135 75
Fluorspar, CaF2 19.5
Gadolinium 9 5
Germanium 6.1 3.4
German silver 18.4 10.2
Glass, hard 5.9 3.3
Glass, Pyrex 4.0 2.2
Glass, plate 9.0 5.0
Gold 14.2 8.2
Gold - copper 15.5
Gold - platinum 15.2
Granite 7.9 4.4
Graphite, pure (Carbon) 2 - 6 1.1 - 3.4
Gunmetal 18 10
Gutta percha 198
Hafnium 5.9 3.3
Hard alloy K20 6 3.3
Hastelloy C 11.3 6.3
Holmium 11.2 6.2
Ice, 0oC water 51 28.3
Inconel 12.6 7.0
Indium 33 18.3
Invar 1.5 0.8
Iridium 6.4 3.6
Iron, pure 12.0 6.7
Iron, cast 10.4 5.9
Iron, forged 11.3 6.3
Kapton 20 11.1
Lanthanum 12.1 6.7
Lead 28.0 15.1
Limestone 8 4.4
Lithium 46 25.6
Lutetium 9.9 5.5
Macor 9.3 5.2
Magnalium 23.8
Magnesium 25 14
Manganese 22 12.3
Manganin 18.1
Marble 5.5 - 14.1 3.1 - 7.9
Masonry 4.7 - 9.0 2.6 - 5.0
Mercury 61 33.9
Mica 3 1.7
Molybdenum 5 2.8
Monel metal 13.5 7.5
Mortar 7.3 - 13.5 4.1-7.5
Neodymium 9.6 5.3
Nickel 13.0 7.2
Niobium (Columbium) 7 3.9
Nylon, general purpose 72 40
Nylon, Type 11, molding and extruding compound 100 55.6
Nylon, Type 12, molding and extruding compound 80.5 44.7
Nylon, Type 6, cast 85 47.2
Nylon, Type 6/6, molding compound 80 44.4
Oak, perpendicular to the grain 54 30
Osmium 5 2.8
Palladium 11.8 6.6
Paraffin 106 - 480
Phenolic resin without fillers 60 - 80 33 - 44.4
Phosphor bronze 16.7 9.3
Plaster 16.4 9.2
Plastics 40 - 120 22 - 67
Platinum 9.0 5.0
Plutonium 54 30.2
Polyacrylonitrile 70 38.5
Polyallomer 91.5 50.8
Polyamide (PA) 110 61.1
Polybutylene (PB) 130 72
Polycarbonate (PC) 70.2 39
Polycarbonate - glass fiber-reinforced 21.5 12
Polyester 123.5 69
Polyester - glass fiber-reinforced 25 14
Polyethylene (PE) 200 111
Polyethylene (PE) - High Molecular Weight 108 60
Polyethylene terephthalate (PET) 59.4 33
Polyphenylene - glass fiber-reinforced 35.8 20
Polypropylene (PP), unfilled 100 - 200 56 - 112
Polypropylene - glass fiber-reinforced 32 18
Polystyrene (PS) 70 38.9
Polysulfone (PSO) 55.8 31
Polyurethane (PUR), rigid 57.6 32
Polyvinyl chloride (PVC) 50.4 28
Polyvinylidene fluoride (PVDF) 127.8 71
Porcelain, Industrial 6.5 3.6
Potassium 83 46.1
Praseodymium 6.7 3.7
Promethium 11 6.1
Quartz 0.77 - 1.4 0.43 - 0.79
Rhenium 6.7 3.7
Rhodium 8 4.5
Rock salt 40.4
Rubber, hard 77 42.8
Ruthenium 9.1 5.1
Samarium 12.7 7.1
Sandstone 11.6 6.5
Sapphire 5.3 2.9
Scandium 10.2 5.7
Selenium 3.8 2.1
Silicon 3 1.7
Silicon Carbide 2.77 1.5
Silver 19.5 10.7
Sitall 0.15 0.08
Slate 10.4 5.8
Sodium 70 39.1
Solder lead - tin, 50% - 50% 24.0 13.4
Speculum metal 19.3
Steatite 8.5 4.7
Steel 12.0 6.7
Steel Stainless Austenitic (304) 17.3 9.6
Steel Stainless Austenitic (310) 14.4 8.0
Steel Stainless Austenitic (316) 16.0 8.9
Steel Stainless Ferritic (410) 9.9 5.5
Strontium 22.5 12.5
Tantalum 6.5 3.6
Tellurium 36.9 20.5
Terbium 10.3 5.7
Terne 11.6 6.5
Thallium 29.9 16.6
Thorium 12 6.7
Thulium 13.3 7.4
Tin 23.4 13.0
Titanium 8.6 4.8
Topas 5 - 8
Tungsten 4.3 2.4
Uranium 13.9 7.7
Vanadium 8 4.5
Vinyl Ester 16 - 22 8.7 - 12
Vulcanite 63.6
Wax 2 - 15
Wedgwood ware 8.9
Wood, fir 3.7 2.1
Wood, parallel to grain 3 1.7
Wood, across (perpendicular) to grain 30 17
Wood, pine 5 2.8
Ytterbium 26.3 14.6
Yttrium 10.6 5.9
Zinc 29.7 16.5
Zirconium 5.7 3.2

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

Most values are based on temperature 25oC (77oF).

  • T(oC) = 5/9[T(oF) - 32]
  • 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 - The effects of work, heat and energy on a system
  • Material Properties - Material properties - density, heat capacity, viscosity and more - for gases, fluids and solids

Related Documents

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  • de: Temperaturausdehnungs

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