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Ensinger PEI

Chi Mei Polyrex® PG-33 Polystyrene  (discontinued **)
Categories: Polymer; Thermoplastic; Polystyrene (PS); Polystyrene, Molded, Unreinforced

Material Notes: Standard grade

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Physical PropertiesMetricEnglishComments
Density 1.05 g/cc0.0379 lb/in³ISO 1183
Melt Flow 8.5 g/10 min
@Load 10.0 kg,
Temperature 220 °C
8.5 g/10 min
@Load 22.0 lb,
Temperature 428 °F
Melt Volume Rate (ml/10 min); ISO 1133
 
Mechanical PropertiesMetricEnglishComments
Ball Indentation Hardness 149 MPa21600 psiH358/30; ISO 2039-1
Tensile Strength at Break 37.0 MPa5370 psi50 mm/min; ISO 527
Tensile Strength, Yield 41.0 MPa5950 psi50 mm/min; ISO 527
Elongation at Break 5.0 %5.0 %50 mm/min; ISO 527
Flexural Strength 62.0 MPa8990 psi2 mm/min; ISO 178
Flexural Modulus 2.40 GPa348 ksi2 mm/min; ISO 178
Izod Impact, Notched (ISO) 2.00 kJ/m²0.952 ft-lb/in²ISO 180/1A
Izod Impact, Unnotched (ISO) 7.00 kJ/m²3.33 ft-lb/in²ISO 180/1C
Charpy Impact Unnotched 0.900 J/cm²4.28 ft-lb/in²ISO 179
Charpy Impact, Notched 0.200 J/cm²0.952 ft-lb/in²ISO 179
Impact 2.02.0Impact Flexural Test Notched (KJ/m²)
 1717Impact Flexural Test Unnotched (KJ/m²)
 
Thermal PropertiesMetricEnglishComments
Deflection Temperature at 1.8 MPa (264 psi) 76.0 °C169 °Funannealed; ISO 75
 87.0 °C189 °Fannealed; ISO 75
Vicat Softening Point  89.0 °C
@Load 5.00 kg
192 °F
@Load 11.0 lb
50°C/hr; ISO 306
 94.0 °C
@Load 1.00 kg
201 °F
@Load 2.20 lb
50°C/hr; ISO 306
 95.0 °C
@Load 5.00 kg
203 °F
@Load 11.0 lb
120°C/hr; ISO 306
 96.0 °C
@Load 1.00 kg
205 °F
@Load 2.20 lb
120°C/hr; ISO 306
Flammability, UL94 HB
@Thickness 1.59 mm
HB
@Thickness 0.0625 in
UL 94

**
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