eFunda Polymers: Properties of Thermoplastic elastomers {polyolefin, low and medium hardness}
engineering fundamentals Polymer Material Properties
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Thermoplastic elastomers		  
List of Suppliers
State: polyolefin
Application: low and medium hardness
Material Properties
 Mechanical Properties Conditions
State 1 State 2 ASTM
Elastic Modulus (MPa)   8 - 114  tensile   D638
Flexural Modulus (MPa)   11 - 207   23 ºC   D790
Tensile Strength (MPa)   5 - 18 at break   D638
Elongation at break (%)   150 - 780     D638
Hardness   64 - 92  Shore A   D638
Izod Impact (J/cm of notch)
1/8" thick specimen unless noted		  no break     D256A

 Thermal Properties Conditions
Pressure State ASTM
Thermal Conductivity (W/m-ºC)  0.188 - 0.209     C177

 Physical & Electrical Properties Conditions
State ASTM
Specific Gravity  0.88 - 0.98   D792
Water Absorption (% weight increase)  0.01  after 24 hrs D570
Dielectric Strength (V/mil);
1/8" thick specimen unless noted		   410 - 445   D149

 Processing Properties Conditions
Type ASTM
Melt Flow (gm/10 min)  0.4 - 20   D1238
Melting Temperature (ºC)  165  Tg, amorphous  
Processing Temperature (ºC)  177 - 233  compression molding  
 183 - 247  injection molding  
 194 - 247  extrusion  
Molding Pressure (MPa)   28 - 131    
Compression Ratio  2 - 3.5    
Linear Mold Shrinkage (cm/cm)  0.015 - 0.02   D955

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Suppliers
A. Schulman Akron, OH  800-662-7203
AlphaGary Corp. Leominster, MA  800-232-9741
DuPont Co., Polymers Wilmington, DE  800-438-7225
Exxon Chemical Co. Houston, TX  800-231-6633
M.A. Industries, Inc. Peachtree City, GA  800-241-8250
Montell North America Wilmington, DE   
Network Polymers, Inc. Akron, OH  888-437-4674
Solutia, Inc. St Louis, MO   
Solvay Engineered Polymers Auburn Hills, MI  800-207-6959
Teknor Apex International Pawtucket, RI  800-554-9892
Union Carbide Corp. Danbury, CT  800-335-8550
Vi-Chem Corp. Grand Rapids, MI  800-477-8501

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