eFunda Polymers: Properties of Polyphenylene Oxide (modified) {alloy with polystyrene, impact modified}
engineering fundamentals Polymer Material Properties
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Polyphenylene Oxide (modified)		  
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Additives: alloy with polystyrene, impact modified
Material Properties
 Mechanical Properties Conditions
State 1 State 2 ASTM
Elastic Modulus (MPa)   2381 - 2484  tensile   D638
Flexural Modulus (MPa)   2243 - 2381   23 ºC   D790
Tensile Strength (MPa)   49 - 56 at break   D638
Compressive Strength (MPa)
at yield or break		   69     D695
Flexural Strength (MPa)
at yield or break		   57 - 76     D790
Elongation at break (%)   35     D638
Hardness  108  Rockwell L   D638
  93  Rockwell M   D638
Izod Impact (J/cm of notch)
1/8" thick specimen unless noted		   3.6     D256A

 Thermal Properties Conditions
Pressure State ASTM
Deflection Temperature (ºC)   97 - 119   0.46 MPa   D648
  88 - 135   1.82 MPa   D648

 Physical & Electrical Properties Conditions
State ASTM
Specific Gravity  1.27 - 1.36   D792
Water Absorption (% weight increase)  0.07 - 0.1  after 24 hrs D570
Dielectric Strength (V/mil);
1/8" thick specimen unless noted		   530   D149

 Processing Properties Conditions
Type ASTM
Melting Temperature (ºC)  135  Tg, amorphous  
Processing Temperature (ºC)  219 - 288  injection molding  
Molding Pressure (MPa)   69 - 104    
Linear Mold Shrinkage (cm/cm)  0.006   D955

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Suppliers
Creanova, Inc. Somerset, NJ   
GE Plastics Pittsfield, MA  800-845-0600

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