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coefficient of thermal expansion

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Terminological databases

EKI terminibaas Esterm

ID 719199 Last modified 30.12.2004
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Domain Physics
coefficient of thermal expansion preferred
  • the fractional expansion of matter (ie the expansion of the unit length, area or volume) per degree rise in the temperature. If the coefficients of linear, areal and cubical expansion of a substance are ?, ?, and ? respectively, ? is approximately twice, and ? three times, ?.
coefficient of thermal expansion preferred
Usage examples
  • For the evaluation of the volume, coefficients of thermal expansion of 3*10-3 per degree Celsius for propane and propylene and 2*10-3 per degree Celsius for butane and butadiene shall be used instead of the exact values.

Materjalitehnika terminibaas

ID 1125922 Last modified 15.08.2025
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Domain welding - jointing & separating - bondinggeneral mechanics - behaviour of solid bodiesmaterials sciencecasting
coefficient of thermal expansion preferred
thermal expansion coefficient
coefficient of expansion
CTE
коэффициент расширения
коэффициент расширяемости deprecated
коэффициент температурного расширения
коэффициент теплового расширения
коэффициент термического расширения
КТР
температурный коэффициент расширения
тепловой коэффициент расширения
термический коэффициент расширения
  • materjali (joon, pind või maht) mõõtmete muutumist iseloomustav tegur temperatuuriühiku kohta (vt joonpaisumistegur, mahtpaisumistegur)
    Good to know
    • Soojuspaisumistegurit käsitletakse sageli joopasumisteguri sünonüümina, kuigi eristatakse ka pind- ja mahtpaisumistegureid. (vt joonpaisumistegur, mahtpaisumistegur)
  • the fractional expansion of matter (ie the expansion of the unit length, area, or volume) per degree rise in temperature (see: coefficient of linear thermal expnsion, coefficient of volume thermal expension)
    Good to know
    • A coefficient of thermal expansion (CTE) typically refers to the linear coefficient of expansion. (see: coefficient of linear thermal expansion)
  • частичное расширение вещества (т. е. увеличение единичной длины, площади, или объёма) при увеличении температуры на один градус (см. коэффициент линейного теплового расширения, коэффициент объёмного теплового расширения)
    Good to know
    • Коэффициент термического расширения обычно относится к коэффициенту линейного теплового расширения (см. коэффициент линейного теплового расширения).
soojuspaisumistegur
coefficient of thermal expansion preferred
thermal expansion coefficient
coefficient of expansion
CTE abbreviation
коэффициент расширения
коэффициент расширяемости deprecated
коэффициент температурного расширения
коэффициент теплового расширения
коэффициент термического расширения
КТР abbreviation
температурный коэффициент расширения
тепловой коэффициент расширения
термический коэффициент расширения

Metroloogia terminibaas

ID 616348 Last modified 10.03.2026
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Domain Standardisation - Metrologymeasuring procedures
soojuspaisumistegur preferred
ruumpaisumistegur
mahtpaisumistegur
CTE
coefficient of thermal expansion preferred
thermal expansion coefficient
CTE
α
cubic expansion coefficient
coefficient of cubical expansion
cubical expansion coefficient
  • paisumistegur, mis kirjeldab, kuidas objekti kontuur muutub temperatuuri muutumisega
  • coefficient of thermal expansion describes how the size of an object changes with a change in temperature
  • linear thermal expansion coefficient of a material at 20 0C
soojuspaisumistegur preferred
Usage examples
  • Soojuspaisumistegur iseloomustab objekti kalduvust muuta oma kuju, ruumala ja mahtu vastuseks temperatuuri muutusele.
ruumpaisumistegur
Usage examples
  • Ruumpaisumistegur näitab seda, et materjali ruumala muutub mõne fikseeritud murdosa võrra, nii nt võib terasplokk ruumalaga 1 kuupmeeter laieneda 1,002 kuupmeetrini, kui temperatuuri tõstetakse 50 K võrra.
mahtpaisumistegur
CTE abbreviation
α symbol
coefficient of thermal expansion preferred
Usage examples
  • Coefficient of thermal expansion that the volume of a material changes by some fixed fractional amount. For example, a steel block with a volume of 1 cubic meter might expand to 1,002 cubic meters when the temperature is raised by 50 K.
thermal expansion coefficient
CTE abbreviation
α symbol
cubic expansion coefficient
coefficient of cubical expansion
cubical expansion coefficient

Metroloogia terminibaas

ID 574876 Last modified 12.03.2026
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Domain Standardisation - Metrologymeasuring procedures
joonpaisumistegur preferred
lineaarpaisumistegur
α
paisumistegur
linear expansion coefficient preferred
coefficient of linear expansion
α
expansion coefficient
coefficient of expansion
expansion efficiency
thermal expansion coefficient variant
coefficient of thermal expansion variant
CTE variant
  • pikkuse (pindala või mahu) muutus temperatuuri muutuse kohta antud konstantsel rõhul
  • suurus, mis iseloomustab keha joonmõõtme (pikkuse, laiuse või kõrguse) suurenemist soojenemisel
  • fractional change in length or area or volume per unit change in temperature at a given constant pressure
  • fractional expansion of matter (ie the expansion of the unit length, area or volume) per degree rise in the temperature
  • ratio of the fraction change of length to the change in temperature
joonpaisumistegur preferred
Usage examples
  • Soojuspaisumisest tingitud objekti pikkusmõõtme muutus on seotud temperatuuri muutusega joonpaisumisteguri abil ja selleks on pikkuse murdosa muutus temperatuuri muutuse kraadi kohta.
lineaarpaisumistegur
α symbol
Usage examples
  • Tähisele α lisatakse indeksid, mis tähistavad vastavalt mõõdetava osise joonpaisumistegurit αmo ja tööetaloni joonpaisumistegurit αet.
paisumistegur
soojuspaisumistegur variant
Good to know
  • Soojuspaisumine on aine kalduvus muuta oma kuju, pindala ja mahtu vastuseks temperatuuri muutumisele.
linear expansion coefficient preferred
Usage examples
  • To a first approximation, the change in length measurements of an object due to thermal expansion is related to temperature change by a coefficient of linear expansion, and it is the fractional change in length per degree of temperature change.
coefficient of linear expansion
α symbol
Usage examples
  • To the symbol are added subscripts to denote the coefficient of linear expansion for the workpiece (i.e. αw) and the working standard (i.e. αs).
expansion coefficient
coefficient of expansion
expansion efficiency
thermal expansion coefficient variant
Good to know
  • Thermal expansion is the tendency of matter to change its shape, area, and volume in response to a change in temperature.
coefficient of thermal expansion variant
CTE variant abbreviation

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