eFunda Polymers: Properties of Polyester (thermoplastic) {wholly aromatic (liquid crystal), unfilled, high melting point}

Generic (ABS, ...) Trade Name


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Polyester (thermoplastic)	List of Suppliers

State:	wholly aromatic (liquid crystal)
Additives:	unfilled
Application:	high melting point

Material Properties

Mechanical Properties		Conditions
Mechanical Properties		State 1	State 2	ASTM
Elastic Modulus (MPa)	12075	tensile		D638
Elastic Modulus (MPa)	2133	compressive		D638
Flexural Modulus (MPa)	12834	23 ºC		D790
	6003	122 ºC		D790
	3105	149 ºC		D790
Tensile Strength (MPa)	87	at break		D638
Compressive Strength (MPa) at yield or break	69			D695
Flexural Strength (MPa) at yield or break	132			D790
Elongation at break (%)	2			D638
Hardness	97	Rockwell R		D638
Izod Impact (J/cm of notch) 1/8" thick specimen unless noted	0.6			D256A

Thermal Properties Conditions

Pressure State ASTM

Coef of Thermal Expansion (10^-6/ºC) 9 D696

Deflection Temperature (ºC) 319 1.82 MPa D648

Physical & Electrical Properties Conditions

State ASTM

Specific Gravity 1.79 D792

Water Absorption (% weight increase) 0.02 saturated D570

0 after 24 hrs D570

Dielectric Strength (V/mil);
1/8" thick specimen unless noted 470 D149

Processing Properties Conditions

Type ASTM

Melting Temperature (ºC) 400 T_m, crystalline

Processing Temperature (ºC) 372 - 455 injection molding

Molding Pressure (MPa) 35 - 125

Compression Ratio 2.5 - 3

Linear Mold Shrinkage (cm/cm) 0 - 0.002 D955