eFunda Polymers: Properties of Acetal {copolymer, mineral filled}
engineering fundamentals Polymer Material Properties
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Acetal
 
List of Suppliers
State: copolymer
Additives: mineral filled
Material Properties
 Mechanical Properties Conditions
State 1 State 2 ASTM
Elastic Modulus (MPa)   3602 - 5382  tensile   D638
Flexural Modulus (MPa)   2967 - 4934   23 ºC   D790
Tensile Strength (MPa)   44 - 79 at break   D638
  44 - 68 at yield   D638
Flexural Strength (MPa)
at yield or break
  86 - 90     D790
Elongation at break (%)   5 - 55     D638
Hardness   83 - 90  Rockwell M   D638
Izod Impact (J/cm of notch)
1/8" thick specimen unless noted
  0.5 - 0.6     D256A

 Thermal Properties Conditions
Pressure State ASTM
Coef of Thermal Expansion (10-6/ºC)   80 - 90     D696
Deflection Temperature (ºC)  150 - 163   0.46 MPa   D648
  93 - 137   1.82 MPa   D648

 Physical & Electrical Properties Conditions
State ASTM
Specific Gravity  1.48 - 1.64   D792
Water Absorption (% weight increase)  0.2  after 24 hrs D570
 0.8 - 0.9  saturated D570

 Processing Properties Conditions
Type ASTM
Melting Temperature (ºC)  160 - 175  Tm, crystalline  
Processing Temperature (ºC)  182 - 232  injection molding  
Molding Pressure (MPa)   69 - 138    
Compression Ratio  3 - 4    
Linear Mold Shrinkage (cm/cm)  0.015 - 0.019   D955

Suppliers
BASF Corp. Mount Olive, NJ  800-BC-RESIN
LG Chemical America, Inc. Englewood Cliffs, NJ   
M.A. Hanna Engineered Materials Norcross, GA   
Network Polymers, Inc. Akron, OH  888-437-4674
Ticona Summit, NJ  800-526-4960
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