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Rulon Bearings

General Plastics LAST-A-FOAM® TR-20 Polyurethane Foam
Categories: Other Engineering Material; Composite Core Material; Polymer; Thermoset; Polyurethane, TS; Thermoset Polyurethane Foam, Unreinforced

Material Notes:

Information provided by General Plastics Manufacturing Company

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Physical PropertiesMetricEnglishComments
Density 0.320 g/cc0.0116 lb/in³ASTM D1623
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore D 38.138.1ASTM D2240
Tensile Strength 4.93 MPa715 psiPerpendicular to Rise; ASTM D1623
 5.44 MPa789 psiParallel to Rise; ASTM D1623
Tensile Modulus 0.46238 GPa67.062 ksiParallel to Rise; ASTM D1623
 0.47108 GPa68.324 ksiPerpendicular to Rise; ASTM D1623
Flexural Strength 7.060 MPa1024 psiRise Parallel to Test Span; ASTM D790
 7.067 MPa1025 psiRise Parallel to Beam Thick.; ASTM D790
Flexural Modulus 0.24447 GPa35.458 ksiRise Parallel to Beam Thick.; ASTM D790
 0.26886 GPa38.995 ksiRise Parallel to Test Span; ASTM D790
Compressive Strength  5.30 MPa
@Temperature 71.1 °C
769 psi
@Temperature 160 °F
Perpendicular to Rise; ASTM D1621
 5.54 MPa
@Temperature 71.1 °C
804 psi
@Temperature 160 °F
Parallel to Rise; ASTM D1621
 7.288 MPa
@Temperature 23.9 °C
1057 psi
@Temperature 75.0 °F
Parallel to Rise; ASTM D1621
 7.322 MPa
@Temperature 23.9 °C
1062 psi
@Temperature 75.0 °F
Perpendicular to Rise; ASTM D1621
 11.33 MPa
@Temperature -51.1 °C
1643 psi
@Temperature -60.0 °F
Perpendicular to Rise; ASTM D1621
 11.48 MPa
@Temperature -51.1 °C
1665 psi
@Temperature -60.0 °F
Parallel to Rise; ASTM D1621
Compressive Modulus  0.16358 GPa
@Temperature 71.1 °C
23.725 ksi
@Temperature 160 °F
Perpendicular to Rise; ASTM D1621
 0.17702 GPa
@Temperature 71.1 °C
25.675 ksi
@Temperature 160 °F
Parallel to Rise; ASTM D1621
 0.20269 GPa
@Temperature 23.9 °C
29.397 ksi
@Temperature 75.0 °F
Perpendicular to Rise; ASTM D1621
 0.23684 GPa
@Temperature -51.1 °C
34.351 ksi
@Temperature -60.0 °F
Perpendicular to Rise; ASTM D1621
 0.23944 GPa
@Temperature -51.1 °C
34.728 ksi
@Temperature -60.0 °F
Parallel to Rise; ASTM D1621
 0.24736 GPa
@Temperature 23.9 °C
35.876 ksi
@Temperature 75.0 °F
Parallel to Rise; ASTM D1621
Poissons Ratio 0.300.30
Shear Modulus 0.06695 GPa9.711 ksiRise Parallel to Specimen Length; ASTM C273
 0.07177 GPa10.41 ksiRise Parallel to Specimen Thickness; ASTM C273
Shear Strength 4.57 MPa663 psiRise Parallel to Specimen Length; ASTM C273
 4.59 MPa666 psiRise Parallel to Specimen Thickness; ASTM C273
 
Thermal PropertiesMetricEnglishComments
CTE, linear 57.6 µm/m-°C
@Temperature -28.9 - 71.1 °C
32.0 µin/in-°F
@Temperature -20.0 - 160 °F
GP Method
Thermal Conductivity 0.0568 W/m-K0.394 BTU-in/hr-ft²-°FASTM C518
Glass Transition Temp, Tg 124 °C256 °FASTM E1824
 
Descriptive Properties
Closed Cell Content97.2%ASTM D2856 Procedure B
Tumbling Friability (%)1.820 mins at 60 rpm, ASTM C421

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