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Rulon Bearings

Huntsman IROGRAN® A 78 P 4766 TPU-Polyether
Categories: Polymer; Thermoplastic; Elastomer, TPE; Polyurethane TPE; Polyurethane, TP; Thermoplastic Polyurethane, Elastomer, Ether Grade

Material Notes: Excellent resistance to hydrolysis and microbial attack. Suggested for injection molding and extrusion.

Information provided by Huntsman

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Physical PropertiesMetricEnglishComments
Density 1.16 g/cc0.0419 lb/in³ASTM D792
Linear Mold Shrinkage 0.012 cm/cm0.012 in/inASTM D995
Melt Flow 80 - 120 g/10 min80 - 120 g/10 minMelt Volume Rate (cm³/10 min)
Melt Index of Compound 110 g/10 min
@Load 21.6 kg,
Temperature 190 °C
110 g/10 min
@Load 47.6 lb,
Temperature 374 °F
cm3/10 min
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore A 8282ASTM D2240
Hardness, Shore D 3030ASTM D2240
Tensile Strength at Break 30.0 MPa4350 psiDIN 53504
Elongation at Break 910 %910 %ASTM D412
100% Modulus 5.20 MPa
@Strain 100 %
754 psi
@Strain 100 %
DIN 53504
300% Modulus 8.00 MPa
@Strain 300 %
1160 psi
@Strain 300 %
DIN 53504
Rebound 50 %50 %Bayshore; ASTM D2632
Tear Strength 71.9 kN/m410 pliASTM D624
Abrasion 4040[mm3]; ISO 4649
Compression Set  20 %
@Temperature 23.0 °C,
Time 252000 sec
20 %
@Temperature 73.4 °F,
Time 70.0 hour
ASTM D395
 36 %
@Temperature 70.0 °C,
Time 86400 sec
36 %
@Temperature 158 °F,
Time 24.0 hour
ASTM D395
 
Thermal PropertiesMetricEnglishComments
Melting Point 165 - 190 °C329 - 374 °FHuntsman/TMA
Flammability, UL94 V-0V-0Non-Halogen FR
 
Processing PropertiesMetricEnglishComments
Feed Temperature 25.0 - 40.0 °C77.0 - 104 °FExtrusion
Front Barrel Temperature 165 - 190 °C329 - 374 °FExtrusion
Nozzle Temperature 170 - 200 °C338 - 392 °FExtrusion
 180 - 200 °C356 - 392 °FInjection
Adapter Temperature 175 - 195 °C347 - 383 °FExtrusion
Die Temperature 175 - 200 °C347 - 392 °FExtrusion
Melt Temperature 170 - 195 °C338 - 383 °FInjection
Mold Temperature 20.0 - 70.0 °C68.0 - 158 °FInjection
 
Descriptive Properties
Heating Zone175-195°CInjection

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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