eFunda Polymers: Properties of Polyester (thermoplastic) {poly(cyclohexylene-methylene-terephthalate), unfilled copolyester}

Generic (ABS, ...) Trade Name


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Calculators

Polyester (thermoplastic)	List of Suppliers

State:	poly(cyclohexylene-methylene-terephthalate)
Additives:	unfilled copolyester

Material Properties

Mechanical Properties		Conditions
Mechanical Properties		State 1	State 2	ASTM
Flexural Modulus (MPa)	1794	23 ºC		D790
Tensile Strength (MPa)	53	at break		D638
Tensile Strength (MPa)	45	at yield		D638
Flexural Strength (MPa) at yield or break	67			D790
Elongation at break (%)	330			D638
Hardness	105	Rockwell R		D638
Izod Impact (J/cm of notch) 1/8" thick specimen unless noted	no break			D256A

Thermal Properties Conditions

Pressure State ASTM

Deflection Temperature (ºC) 74 0.46 MPa D648

65 1.82 MPa D648

Physical & Electrical Properties Conditions

State ASTM

Specific Gravity 1.23 D792

Water Absorption (% weight increase) 0.13 after 24 hrs D570

Processing Properties Conditions

Type ASTM

Processing Temperature (ºC) 277 - 294 injection molding

Molding Pressure (MPa) 7 - 138

Compression Ratio 2 - 4.3

Linear Mold Shrinkage (cm/cm) 0.002 - 0.005 D955