Covestro Desmopan® 790 Polyurethane

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Covestro Desmopan® 790 Polyurethane
Categories:	Polymer; Thermoplastic; Polyurethane, TP
Material Notes:	Extrusion- and injection molding grade; high mechanical strength; Application; Toothed belts; Profiles; Injection molded engineering parts As of 1 September 2015, Bayer MaterialScience was separated from Bayer AG and officially adopted its new name – Covestro.
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Physical Properties	Metric	English	Comments

Density	1.21 g/cc	0.0437 lb/in³	ISO 1183

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	92	92	ISO 868
Hardness, Shore D	40	40	ISO 868
Tensile Strength, Ultimate	48.0 MPa	6960 psi	200 mm/min; DIN 53504
Tensile Stress at Strain	3.40 MPa @Strain 10 %	493 psi @Strain 10 %	200 mm/min; DIN 53504
	8.50 MPa @Strain 50 %	1230 psi @Strain 50 %	200 mm/min; DIN 53504
	11.7 MPa @Strain 100 %	1700 psi @Strain 100 %	200 mm/min; DIN 53504
	32.2 MPa @Strain 300 %	4670 psi @Strain 300 %	200 mm/min; DIN 53504
Elongation at Break	434 %	434 %	200 mm/min; DIN 53504
Tensile Modulus	0.0530 GPa @Temperature 60.0 °C	7.69 ksi @Temperature 140 °F	storage; ISO 6721-1,-4
	0.100 GPa @Temperature 20.0 °C	14.5 ksi @Temperature 68.0 °F	storage; ISO 6721-1,-4
	0.630 GPa @Temperature -20.0 °C	91.4 ksi @Temperature -4.00 °F	storage; ISO 6721-1,-4
Rebound	32 %	32 %	Resilience; ISO 4662
Tear Strength	85.0 kN/m	485 pli	500 mm/min; ISO 34-1
Abrasion	30	30	mm³, Method A; ISO 4649
Compression Set	25 % @Temperature 23.0 °C	25 % @Temperature 73.4 °F	72 hr; ISO 815
	42 % @Temperature 70.0 °C	42 % @Temperature 158 °F	24 hr; ISO 815
	34 % @Temperature 70.0 °C, Time 86400 sec	34 % @Temperature 158 °F, Time 24.0 hour	Method C; ISO 815-1

Processing Properties	Metric	English	Comments
Melt Temperature	200 - 220 °C	392 - 428 °F	Extrusion
	210 - 230 °C	410 - 446 °F	Injection
Mold Temperature	20.0 - 40.0 °C	68.0 - 104 °F	Injection
Drying Temperature	80.0 °C	176 °F

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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PB09769 / 92609

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