eFunda Polymers: Properties of Polyurethane {thermoset, casting resin, liquid}
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Polyurethane		  
List of Suppliers
State: thermoset
Application: casting resin, liquid
Material Properties
 Mechanical Properties Conditions
State 1 State 2 ASTM
Elastic Modulus (MPa)   69 - 690  compressive   D638
  69 - 690  tensile   D638
Flexural Modulus (MPa)   69 - 690   23 ºC   D790
Tensile Strength (MPa)   2 - 69 at break   D638
Compressive Strength (MPa)
at yield or break		  138     D695
Flexural Strength (MPa)
at yield or break		   5 - 32     D790
Elongation at break (%)   100 - 1000     D638
Hardness   10 - 13  Shore A   D638
  90  Shore D   D638
Izod Impact (J/cm of notch)
1/8" thick specimen unless noted		   13.3 - 0     D256A

 Thermal Properties Conditions
Pressure State ASTM
Coef of Thermal Expansion (10-6/ºC)  100 - 200     D696
Thermal Conductivity (W/m-ºC)  0.209     C177

 Physical & Electrical Properties Conditions
State ASTM
Specific Gravity  1.03 - 1.5   D792
Water Absorption (% weight increase)  0.2 - 1.5  after 24 hrs D570
Dielectric Strength (V/mil);
1/8" thick specimen unless noted		   300 - 500   D149

 Processing Properties Conditions
Type ASTM
Melting Temperature (ºC)  thermoset  Tm, crystalline  
Processing Temperature (ºC)   7 - 122  compression molding  
Molding Pressure (MPa)   1 - 35    
Linear Mold Shrinkage (cm/cm)  0.02   D955

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Suppliers
Bayer Corp. Pittsburgh, PA  800-662-2927
Cabot Corp. Naperville, IL  800-222-6745
Conap, Inc. Olean, NY  800-836-3666
Dow Plastics Midland, MI  800-441-4369
Emerson & Cuming Specialty Polymers Billerica, MA  800-832-4929
ITW Devcon Danvers, MA  800-933-8266
Polyurethane Specialities Co., Inc. Lyndhurst, NJ   
Union Carbide Corp. Danbury, CT  800-335-8550

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