eFunda Polymers: Properties of Polyphthalamide {40% glass / mineral reinforced}
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Polyphthalamide
 
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Additives: 40% glass / mineral reinforced
Material Properties
 Mechanical Properties Conditions
State 1 State 2 ASTM
Flexural Modulus (MPa)   8280   23 ºC   D790
Tensile Strength (MPa)  194 at break   D638
 162 at yield   D638
Compressive Strength (MPa)
at yield or break
 228     D695
Flexural Strength (MPa)
at yield or break
 217     D790
Elongation at break (%)   3     D638
Hardness  125  Rockwell   D638
Izod Impact (J/cm of notch)
1/8" thick specimen unless noted
  0.5     D256A

 Thermal Properties Conditions
Pressure State ASTM
Coef of Thermal Expansion (10-6/ºC)   3 - 5     D696
Deflection Temperature (ºC)  275   1.82 MPa   D648

 Physical & Electrical Properties Conditions
State ASTM
Specific Gravity  1.54   D792
Water Absorption (% weight increase)  0.16  after 24 hrs D570
Dielectric Strength (V/mil);
1/8" thick specimen unless noted
  505   D149

 Processing Properties Conditions
Type ASTM
Processing Temperature (ºC)  321 - 343  injection molding  
Molding Pressure (MPa)   34 - 103    
Compression Ratio  2.5 - 3    
Linear Mold Shrinkage (cm/cm)  0.004 - 0.007   D955

Suppliers
RTP Co. Winona, MN  800-433-4787
Solvay Advanced Polymers, L.L.C. Alpharetta, GA  800-621-4557
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