eFunda Polymers: Properties of Polypropylene {homopolymer, 40% glass fiber reinforced}
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Polypropylene		  
List of Suppliers
State: homopolymer
Additives: 40% glass fiber reinforced
Material Properties
 Mechanical Properties Conditions
State 1 State 2 ASTM
Elastic Modulus (MPa)   7590 - 10350  tensile   D638
Flexural Modulus (MPa)   6555 - 6900   23 ºC   D790
Tensile Strength (MPa)   58 - 104 at break   D638
Compressive Strength (MPa)
at yield or break		   62 - 68     D695
Flexural Strength (MPa)
at yield or break		   73 - 16     D790
Elongation at break (%)   2 - 4     D638
Hardness  102 - 111  Rockwell R   D638
Izod Impact (J/cm of notch)
1/8" thick specimen unless noted		   0.7 - 1.1     D256A

 Thermal Properties Conditions
Pressure State ASTM
Coef of Thermal Expansion (10-6/ºC)   27 - 32     D696
Deflection Temperature (ºC)  166   0.46 MPa   D648
 149 - 166   1.82 MPa   D648
Thermal Conductivity (W/m-ºC)  0.351 - 0.368     C177

 Physical & Electrical Properties Conditions
State ASTM
Specific Gravity  1.22 - 1.23   D792
Water Absorption (% weight increase)  0.09 - 0.1  saturated D570
 0.05 - 0.06  after 24 hrs D570
Dielectric Strength (V/mil);
1/8" thick specimen unless noted		   500 - 510   D149

 Processing Properties Conditions
Type ASTM
Melt Flow (gm/10 min)  1 - 20   D1238
Melting Temperature (ºC)  168  Tm, crystalline  
Processing Temperature (ºC)  233 - 288  injection molding  
Molding Pressure (MPa)   69 - 173    
Linear Mold Shrinkage (cm/cm)  0.003 - 0.005   D955

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Suppliers
A. Schulman Akron, OH  800-662-7203
Adell Plastics, Inc. Baltimore, MD  800-638-5218
Albis Corp. Rosenburg, TX  800-231-5911
ComAlloy International Co. Nashville, TN   
DSM Engineering Plastic Products, Inc. Reading, PA  800-729-0101
Ferro Corp. Cleveland, OH   
LNP Engineering Plastics, Inc. Exton, PA  800-854-8774
Montell North America Wilmington, DE   
MRC Polymers, Inc. Chicago, IL   
Network Polymers, Inc. Akron, OH  888-437-4674
Polifil Corp. Rockaway, NJ   
RTP Co. Winona, MN  800-433-4787
Solvay Advanced Polymers, L.L.C. Alpharetta, GA  800-621-4557
Thermofil, Inc. Brighton, MI  800-444-4408

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