eFunda Polymers: Properties of Polyester (thermoplastic) {poly(ethylene-terephthalate), 15% glass, flame-retardant, V-0 1/32}

Generic (ABS, ...) Trade Name


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Polyester (thermoplastic)	List of Suppliers

State:	poly(ethylene-terephthalate)
Additives:	15% glass
Application:	flame-retardant, V-0 1/32

Material Properties

Mechanical Properties		Conditions
Mechanical Properties		State 1	State 2	ASTM
Flexural Modulus (MPa)	5865	23 ºC		D790
	2415	94 ºC		D790
	1518	149 ºC		D790
Tensile Strength (MPa)	107	at break		D638
Compressive Strength (MPa) at yield or break	173			D695
Flexural Strength (MPa) at yield or break	159			D790
Elongation at break (%)	3			D638
Hardness	88	Rockwell M		D638
Hardness	120	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) 1 D696

Deflection Temperature (ºC) 244 0.46 MPa D648

210 1.82 MPa D648

Physical & Electrical Properties Conditions

State ASTM

Specific Gravity 1.53 D792

Water Absorption (% weight increase) 0.07 after 24 hrs D570

Dielectric Strength (V/mil);
1/8" thick specimen unless noted 490 D149

Processing Properties Conditions

Type ASTM

Melting Temperature (ºC) 245 - 255 T_m, crystalline

Processing Temperature (ºC) 274 - 291 injection molding

Molding Pressure (MPa) 56 - 125

Compression Ratio 3

Linear Mold Shrinkage (cm/cm) 0.003 - 0.01 D955