eFunda Polymers: Properties of Polypropylene {homopolymer, 10 - 40% calcium carbonate filled}
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Polypropylene		  
List of Suppliers
State: homopolymer
Additives: 10 - 40% calcium carbonate filled
Material Properties
 Mechanical Properties Conditions
State 1 State 2 ASTM
Elastic Modulus (MPa)   2588 - 3450  tensile   D638
Flexural Modulus (MPa)   1587 - 3105   23 ºC   D790
  2208   94 ºC   D790
Tensile Strength (MPa)   24 - 32 at break   D638
  21 - 32 at yield   D638
Compressive Strength (MPa)
at yield or break		   21 - 50     D695
Flexural Strength (MPa)
at yield or break		   38 - 49     D790
Elongation at break (%)   10 - 245     D638
Hardness   78 - 99  Rockwell R   D638
Izod Impact (J/cm of notch)
1/8" thick specimen unless noted		   0.3 - 0.5     D256A

 Thermal Properties Conditions
Pressure State ASTM
Coef of Thermal Expansion (10-6/ºC)   28 - 50     D696
Deflection Temperature (ºC)   94 - 133   0.46 MPa   D648
  58 - 77   1.82 MPa   D648
Thermal Conductivity (W/m-ºC)  0.288     C177

 Physical & Electrical Properties Conditions
State ASTM
Specific Gravity  0.97 - 1.25   D792
Water Absorption (% weight increase)  0.02 - 0.05  after 24 hrs D570
Dielectric Strength (V/mil);
1/8" thick specimen unless noted		   410 - 500   D149

 Processing Properties Conditions
Type ASTM
Melt Flow (gm/10 min)  0.1 - 30   D1238
Melting Temperature (ºC)  168  Tm, crystalline  
Processing Temperature (ºC)  191 - 274  injection molding  
Molding Pressure (MPa)   56 - 138    
Linear Mold Shrinkage (cm/cm)  0.007 - 0.018   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
Bamberger Polymers, Inc. Jericho, NY   
ComAlloy International Co. Nashville, TN   
DSM Engineering Plastic Products, Inc. Reading, PA  800-729-0101
Federal Plastics Corp. Cranford, NJ  800-541-4424
Ferro Corp. Cleveland, OH   
Montell North America Wilmington, DE   
Network Polymers, Inc. Akron, OH  888-437-4674
Polifil Corp. Rockaway, NJ   
R.S.G. Polymers Corp. Stony Brook, NY   
RTP Co. Winona, MN  800-433-4787
Spartech Polycom Washington, PA  800-538-3149
Thermofil, Inc. Brighton, MI  800-444-4408
Washington Penn Plastic Co. Washington, PA   

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