eFunda Polymers: Properties of Polyethylene and ethylene copolymers {high density homopolymer}
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Polyethylene and ethylene copolymers		  
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State: high density homopolymer
Material Properties
 Mechanical Properties Conditions
State 1 State 2 ASTM
Elastic Modulus (MPa)   1070 - 1090  tensile   D638
Flexural Modulus (MPa)   1001 - 1553   23 ºC   D790
Tensile Strength (MPa)   22 - 31 at break   D638
  26 - 33 at yield   D638
Compressive Strength (MPa)
at yield or break		   19 - 25     D695
Elongation at break (%)   10 - 1200     D638
Hardness   66 - 73  Shore D   D638
Izod Impact (J/cm of notch)
1/8" thick specimen unless noted		   0.2 - 2.1     D256A

 Thermal Properties Conditions
Pressure State ASTM
Coef of Thermal Expansion (10-6/ºC)   59 - 110     D696
Deflection Temperature (ºC)   79 - 91   0.46 MPa   D648
Thermal Conductivity (W/m-ºC)  0.460 - 0.502     C177

 Physical & Electrical Properties Conditions
State ASTM
Specific Gravity  0.952 - 0.965   D792
Water Absorption (% weight increase)  0 - 0.01  after 24 hrs D570
Dielectric Strength (V/mil);
1/8" thick specimen unless noted		   450 - 500   D149

 Processing Properties Conditions
Type ASTM
Melt Flow (gm/10 min)  5 - 18   D1238
Melting Temperature (ºC)  130 - 137  Tm, crystalline  
Processing Temperature (ºC)  177 - 260  injection molding  
 177 - 274  extrusion  
Molding Pressure (MPa)   83 - 103    
Compression Ratio  2    
Linear Mold Shrinkage (cm/cm)  0.015 - 0.04   D955

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Suppliers
A. Schulman Akron, OH  800-662-7203
American Polymers, Inc. Worcester, MA   
Bamberger Polymers, Inc. Jericho, NY   
Chevron Chemical Co. Houston, TX  800-231-3828
Dow Plastics Midland, MI  800-441-4369
Eastman Chemical Co. Kingsport, TN  800-327-8626
Equistar Chemicals LP Houston, TX  888-777-0232
Exxon Chemical Canada Toronto, Ontario, M5W 1K3, Canada   
Exxon Chemical Co. Houston, TX  800-231-6633
Federal Plastics Corp. Cranford, NJ  800-541-4424
Fina Oil & Chemical Co. Dallas, TX  800-344-3462
M.A. Industries, Inc. Peachtree City, GA  800-241-8250
Mobil Chemical Co. Edison, NJ   
Network Polymers, Inc. Akron, OH  888-437-4674
NOVA Chemicals, Ltd. Calgary, Alberta T2P 5C6, Canada   
Phillips Chemical Co. Bartlesville, OK  800-537-3746
R.S.G. Polymers Corp. Stony Brook, NY   
Shuman Plastics, Inc. Depew, NY   
Solvay Polymers, Inc. Houston, TX  800-231-6313
Ticona Summit, NJ  800-526-4960
Union Carbide Corp. Danbury, CT  800-335-8550

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