eFunda Polymers: Properties of Acrylic {alloy, acrylic / PC, molding and extrusion compounds}
engineering fundamentals Polymer Material Properties
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Acrylic		  
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State: alloy
Additives: acrylic / PC
Application: molding and extrusion compounds
Material Properties
 Mechanical Properties Conditions
State 1 State 2 ASTM
Elastic Modulus (MPa)   2208 - 2415  tensile   D638
Flexural Modulus (MPa)   2208 - 2415   23 ºC   D790
Tensile Strength (MPa)   56 - 63 at break   D638
Flexural Strength (MPa)
at yield or break		   78 - 87     D790
Elongation at break (%)   58     D638
Hardness   46 - 49  Rockwell   D638
Izod Impact (J/cm of notch)
1/8" thick specimen unless noted		   13.8 - 15.9     D256A

 Thermal Properties Conditions
Pressure State ASTM
Coef of Thermal Expansion (10-6/ºC)   52     D696
Deflection Temperature (ºC)  123   0.46 MPa   D648
 102   1.82 MPa   D648

 Physical & Electrical Properties Conditions
State ASTM
Specific Gravity  1.15   D792
Water Absorption (% weight increase)  0.3  after 24 hrs D570

 Processing Properties Conditions
Type ASTM
Melt Flow (gm/10 min)  3 - 4   D1238
Melting Temperature (ºC)  140  Tg, amorphous  
Processing Temperature (ºC)  233 - 266  injection molding  
 222 - 249  extrusion  
Molding Pressure (MPa)   35 - 138    
Linear Mold Shrinkage (cm/cm)  0.004 - 0.008   D955

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Cyro Industries Rockaway, NJ  800-631-5384

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