The Universal Selection Source: Plastics & Elastomers


Coefficient of Linear Thermal Expansion

Under the effects of increasing temperature any material will expand. This can lead to significant changes in dimensions, to part warpage or to internal stress. The Coefficient of Linear Thermal Expansion (CLTE often referred to as “α”) characterizes the ability of a plastic to expand under the effect of temperature elevation. It tells engineers how much the part they will develop will remain dimensionally stable under temperature variations.

Most widely used standards to measure Water Absorption in plastics are ASTM D696, ASTM E831, ASTM E228 and ISO 11359.

Name of the polymer Explicit name of the polymer Min Value(10-5 /°C) Max Value(10-5 /°C)
ABS Acrylonitrile-Butadiene Styrene 7.000 15.000
ABS FR Acrylonitrile-Butadiene Styrene flame retardant 6.000 9.000
ABS High Heat Acrylonitrile-Butadiene Styrene High Heat 6.000 10.000
ABS High Impact Acrylonitrile-Butadiene Styrene High Impact 6.000 13.000
ABS/PC Acrylonitrile-Butadiene Styrene/Polycarbonate 4.000 5.000
ABS/PC 20% GF Acrylonitrile-Butadiene Styrene/Polycarbonate 20% glass fiber 1.800 2.000
ABS/PC FR Acrylonitrile-Butadiene Styrene/Polycarbonate flame retardant 3.000 4.000
ASA Acrylonitrile Styrene Acrylate 6.000 11.000
ASA/PC Acrylonitrile Styrene Acrylate/Polycarbonate 7.000 9.000
ASA/PC FR Acrylonitrile Styrene Acrylate/Polycarbonate flame retardant 7.000 8.000
ASA/PVC Acrylonitrile Styrene Acrylate/Polyvinyl Chloride 0.000 9.000
CA - Cellulose Acetate Cellulose Acetate 8.000 18.000
CAB - Cellulose Acetate Butyrate Cellulose Acetate Butyrate 10.000 17.000
Celllulose Diacetate- Pearlescent Films Celllulose Diacetate- Pearlescent Films 2.150 2.150
Celllulose Diacetate-Gloss Film Celllulose Diacetate-Gloss Film 2.150 2.150
Celllulose Diacetate-Integuard Films Celllulose Diacetate-Integuard Films 1.000 1.500
Celllulose Diacetate-Matt Film Celllulose Diacetate-Matt Film 2.150 2.150
Cellulose Diacetate -Window Patch Film (Food Grade) Cellulose Diacetate-Window Patch Film (Food Grade) 2.150 2.150
Cellulose Diacetate-Clareflect metallised film Cellulose Diacetate--Clareflect metallised film 1.500 1.500
Cellulose diacetate-Flame retardant Film Cellulose diacetate-Flame retardant Film 0.640 0.640
Cellulose Diacetate-High Slip Film Cellulose Diacetate-High Slip Film 2.150 2.150
Cellulose Diacetate-Semitone Films Cellulose Diacetate-Semitone Films 2.150 2.150
COC Cyclic Olefin Copolymer 6.000 7.000
CP - Cellulose Proprionate Cellulose Proprionate 10.000 17.000
CPVC - Chlorinated Polyvinyl Chloride CPVC - Chlorinated Polyvinyl Chloride 6.000 8.000
ECTFE Ethylene Tetrafluoroethylene 6.000 9.000
EVA Ethylene Vinyl Acetate 16.000 20.000
FEP Fluorinated Ethylene Propylene 8.000 10.000
HDPE - High Density Polyethylene HDPE - High Density Polyethylene 6.000 11.000
HIPS - High Impact Polystyrene HIPS - High Impact Polystyrene 5.000 20.000
HIPS FR V0 High Impact Polystyrene flame retardant V0 5.000 15.000
Ionomer (EMAC) Ionomer (Ethylene-Methyl Acrylate Copolymer) 10.000 17.000
LCP Liquid Crystal Polymer 0.300 7.000
LCP CF Liquid Crystal Polymer carbon fiber 0.100 6.000
LCP GF Liquid Crystal Polymer glass fiber 0.100 6.000
LCP MINERAL Liquid Crystal Polymer mineral 0.900 8.000
LDPE - Low Density Polyethylene LDPE - Low Density Polyethylene 10.000 20.000
MABS Transparent Acrylonitrile Butadiene Styrene 8.000 11.000
PA 11 30% Glass fiber reinforced Polyamide 11 30% Glass fiber reinforced 3.000 15.000
PA 11 conductive Polyamide 11 conductive 9.000 15.000
PA 11 flexible Polyamide 11 flexible 9.000 15.000
PA 11 rigid Polyamide 11 rigid 9.000 15.000
PA 12 conductive Polyamide 12 conductive 9.000 15.000
PA 12 fiber reinforced Polyamide 12 fiber reinforced 9.000 15.000
PA 12 flexible Polyamide 12 flexible 9.000 15.000
PA 12 glass filled Polyamide 12 glass filled 9.000 15.000
PA 12 rigid Polyamide 12 rigid 9.000 15.000
PA 46 30% GF Polyamide 46 30% glass fiber 2.000 2.000
PA 6 Polyamide 6 5.000 12.000
PA 6-10 Polyamide 6-10 6.000 10.000
PA 66 Polyamide 6-6 5.000 14.000
PA 66 30% GF Polyamide 6-6 30% glass fiber 2.000 3.000
PA 66 30% mineral filled Polyamide 6-6 30% mineral filled 4.000 5.000
PA 66 IM 15-30% GF Polyamide 6-6 impact modified 15-30% glass fiber 2.000 3.000
PA 66 impact modified Polyamide 6-6 impact modified 5.000 14.000
PAI Polyamide-Imide 3.000 4.000
PAI 30% GF Polyamide-Imide 30% glass fiber 1.000 2.000
PAI low friction Polyamide-Imide low friction 2.000 3.000
PAN Polyacrylonitrile 6.000 7.000
PAR Polyarylate 5.000 8.000
PARA 30-60% GF Polyarylamide 30-60% glass fiber 1.400 1.800
PBT Polybutylene Terephthalate 6.000 10.000
PBT 30% GF Polybutylene Terephthalate 30% glass fiber 2.000 5.000
PC 20-40% GF Polycarbonate 20-40% glass fiber 2.000 4.000
PC 20-40% GF FR Polycarbonate 20-40% glass fiber flame retardant 2.000 4.000
PC high heat Polycarbonate high heat 7.000 9.000
PCL - Polycaprolactone Polycaprolactone 16.000 17.000
PCTFE Polymonochlorotrifluoroethylene 4.000 7.000
PE 30% GF Polyethylene 30% glass fiber 5.000 5.000
PEEK Polyetheretherketone 4.700 10.800
PEEK 30% CF Polyetheretherketone 30% carbon fiber 1.500 1.500
PEEK 30% GF Polyetheretherketone 30% glass fiber 1.500 2.200
PEI Polyetherimide 5.000 6.000
PEI 30% GF Polyetherimide 30% glass fiber 2.000 2.000
PEI mineral filled Polyetherimide mineral filled 2.000 5.000
PEKK– Low cristallinity grade Polyetherketoneketone– Low cristallinity grade 77.000 77.000
PESU Polyethersulfone 5.000 6.000
PESU 10-30% GF Polyethersulfone 10-30% glass fiber 2.000 3.000
PET Polyethylene Terephtalate 6.000 8.000
PET 30% GF Polyethylene Terephtalate 30% glass fiber 2.000 5.000
PET 30/35% GF Impact modified Polyethylene Terephtalate 30/35% glass fiber impact modified 1.500 2.000
PET G Polyethylene Terephtalate Glycol 8.000 8.000
PE-UHMW Polyethylene -Ultra High Molecular Weight 13.000 20.000
PFA Perfluoroalkoxy 8.000 12.000
PI Polyimide 5.500 5.500
PLA-injection molding Polylactide-injection molding 8.500 8.500
PMMA Polymethylmethacrylate (Acrylic) 5.000 9.000
PMMA high heat Polymethylmethacrylate (Acrylic) high heat 4.000 9.000
PMMA Impact modified Polymethylmethacrylate (Acrylic) impact modified 5.000 9.000
POM Polyoxymethylene (acetal) 10.000 15.000
POM impact modified Polyoxymethylene (acetal) impact modified 12.000 13.000
POM low friction Polyoxymethylene (acetal) low friction 10.000 12.000
POM mineral filled Polyoxymethylene (acetal) mineral filled 8.000 9.000
PP 10-20% GF Polypropylene 10-20% glass fiber 4.000 7.000
PP 10-40% mineral filled Polypropylene 10-40% mineral filled 3.000 6.000
PP 10-40% TALC Polypropylene 10-40% talc 4.000 8.000
PP 30-40% GF Polypropylene 30-40% glass fiber 2.000 3.000
PP copo Polypropylene copolymer 7.000 17.000
PP homo Polypropylene homopolymer 6.000 17.000
PP impact modified Polypropylene impact modified 7.000 17.000
PPA Polyphthalamide 5.400 5.400
PPA – 30% mineral Polyphthalamide– 30% mineral 7.100 7.200
PPA – 33% glass fiber Polyphthalamide – 33% glass fiber 1.000 1.200
PPA – 33% glass fiber – high flow Polyphthalamide– 33% glass fiber – high flow 0.900 1.100
PPA – 45% glass fiber Polyphthalamide– 45% glass fiber 0.730 0.750
PPE Polyphenylene Ether 3.000 7.000
PPE 30% GF Polyphenylene Ether 30% glass fiber 1.500 2.500
PPE FR Polyphenylene Ether flame retardant 3.000 7.000
PPE impact modified Polyphenylene Ether impact modified 4.000 8.000
PPE mineral filled Polyphenylene Ether mineral filled 2.000 5.000
PPS Polyphenylene Sulfide 3.000 5.000
PPS 20-30% GF Polyphenylene Sulfide 20-30% glass fiber 1.000 4.000
PPS 40% GF Polyphenylene Sulfide 40% glass fiber 1.000 3.000
PPS conductive Polyphenylene Sulfide conductive 1.000 9.000
PPS GF & mineral Polyphenylene Sulfide glass fiber & mineral 1.000 2.000
PS 30 % GF Polystyrene 30% glass fiber 3.500 3.500
PS crystal Polystyrene crystal 5.000 8.000
PS high heat Polystyrene high heat 6.000 8.000
PSU Polysulfone 5.000 6.000
PSU 30% GF Polysulfone 30% glass fiber 2.000 3.000
PSU mineral filled Polysulfone mineral filled 3.000 4.000
PTFE Polytetrafluoroethylene 7.000 20.000
PTFE 25% GF Polytetrafluoroethylene 25% glass fiber 7.000 10.000
PVC 20% GF Polyvinyl Chloride 20% glass fiber 2.000 4.000
PVC plasticized Polyvinyl Chloride plasticized 5.000 20.000
PVC plasticized filled Polyvinyl Chloride plasticized filled 7.000 25.000
PVC rigid Polyvinyl Chloride rigid 5.000 18.000
PVDC Polyvinylidene Chloride 10.000 20.000
PVDF Polyvinylidene Fluoride 8.000 15.000
SAN Styrene Acrylonitrile 6.000 8.000
SAN 20% GF Styrene Acrylonitrile 20% glass fiber 2.000 4.000
SMA Styrene Maleic Anhydride 7.000 8.000
SMA 20% GF Styrene Maleic Anhydride 20% glass fiber 2.000 4.000
SMA FR V0 Styrene Maleic Anhydride flame retardant V0 2.000 6.000
SRP Polyphenylene (Self reinforced) 3.000 3.000
XLPE - Crosslinked Polyethylene XLPE - Crosslinked Polyethylene 10.000 10.000

Disclaimer: all data and information obtained via the Polymer Selector including but not limited to material suitability, material properties, performances, characteristics and cost are given for information purpose only. Although the data and information contained in the Polymer Selector are believed to be accurate and correspond to the best of our knowledge, they are provided without implied warranty of any kind. Data and information contained in the Polymer Selector are intended for guidance in a polymer selection process and should not be considered as binding specifications. The determination of the suitability of this information for any particular use is solely the responsibility of the user. Before working with any material, users should contact material suppliers in order to receive specific, complete and detailed information about the material they are considering. Part of the data and information contained in the Polymer Selector are genericised based on commercial literature provided by polymer suppliers and other parts are coming from assessments of our experts.

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