eFunda Polymers: Properties of Polystyrene and styrene copolymers {ASA with acrylonitrile / butadiene / styrene copolymer, clear styrene butadiene copolymers}

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Calculators

Polystyrene and styrene copolymers	List of Suppliers

State:	ASA with acrylonitrile / butadiene / styrene copolymer
Additives:	clear styrene butadiene copolymers

Material Properties

Mechanical Properties		Conditions
Mechanical Properties		State 1	State 2	ASTM
Flexural Modulus (MPa)	1056 - 1484	23 ºC		D790
Tensile Strength (MPa)	14 - 31	at yield		D638
Flexural Strength (MPa) at yield or break	19 - 45			D790
Elongation at break (%)	20 - 180			D638
Izod Impact (J/cm of notch) 1/8" thick specimen unless noted	0.2 - 0.7			D256A

Thermal Properties Conditions

Pressure State ASTM

Deflection Temperature (ºC) 62 - 77 1.82 MPa D648

Physical & Electrical Properties Conditions

State ASTM

Specific Gravity 1.01 D792

Water Absorption (% weight increase) 0.08 after 24 hrs D570

Dielectric Strength (V/mil);
1/8" thick specimen unless noted 300 D149

Processing Properties Conditions

Type ASTM

Melt Flow (gm/10 min) 7 - 15 D1238

Melting Temperature (ºC) 108 T_g, amorphous

Processing Temperature (ºC) 194 - 233 injection molding

194 - 227 extrusion

Linear Mold Shrinkage (cm/cm) 0.004 - 0.01 D955