eFunda Polymers: Properties of Thermoplastic elastomers {polyolefin, high hardness}
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Thermoplastic elastomers		  
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State: polyolefin
Application: high hardness
Material Properties
 Mechanical Properties Conditions
State 1 State 2 ASTM
Elastic Modulus (MPa)   3 - 236  tensile   D638
Flexural Modulus (MPa)   19 - 2070   23 ºC   D790
Tensile Strength (MPa)   7 - 28 at break   D638
  12 - 28 at yield   D638
Compressive Strength (MPa)
at yield or break		   1 - 1     D695
Elongation at break (%)   20 - 600     D638
Hardness   40 - 70  Shore D   D638
Izod Impact (J/cm of notch)
1/8" thick specimen unless noted		   2.7 - 8.5     D256A

 Thermal Properties Conditions
Pressure State ASTM
Coef of Thermal Expansion (10-6/ºC)   36 - 110     D696

 Physical & Electrical Properties Conditions
State ASTM
Specific Gravity  0.9 - 1.15   D792
Water Absorption (% weight increase)  0 - 0.28  after 24 hrs D570
Dielectric Strength (V/mil);
1/8" thick specimen unless noted		   390 - 465   D149

 Processing Properties Conditions
Type ASTM
Melt Flow (gm/10 min)  0.4 - 10   D1238
Melting Temperature (ºC)  163 - 165  Tg, amorphous  
Processing Temperature (ºC)  188 - 233  compression molding  
 177 - 249  injection molding  
 194 - 247  extrusion  
Molding Pressure (MPa)   42 - 69    
Compression Ratio  2 - 3.5    
Linear Mold Shrinkage (cm/cm)  0.007 - 0.021   D955

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Suppliers
A. Schulman Akron, OH  800-662-7203
AlphaGary Corp. Leominster, MA  800-232-9741
Equistar Chemicals LP Houston, TX  888-777-0232
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
Vi-Chem Corp. Grand Rapids, MI  800-477-8501

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