Covestro Desmopan® 5377A Polyurethane

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Covestro Desmopan® 5377A Polyurethane
Categories:	Polymer; Thermoplastic; Polyurethane, TP
Material Notes:	Extrusion- and injection molding grade; improved microbial resistance; Improved hydrolysis resistance; Application; Textile coating; Wristwatch straps; hard - soft systems 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	1.14 g/cc	0.0412 lb/in³	ISO 1183

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	77	77	ISO 868
Hardness, Shore D	28	28	ISO 868
Tensile Strength, Ultimate	27.0 MPa	3920 psi	200 mm/min; DIN 53504
Tensile Stress at Strain	1.30 MPa @Strain 10 %	189 psi @Strain 10 %	200 mm/min; DIN 53504
	3.60 MPa @Strain 50 %	522 psi @Strain 50 %	200 mm/min; DIN 53504
	4.90 MPa @Strain 100 %	711 psi @Strain 100 %	200 mm/min; DIN 53504
	8.90 MPa @Strain 300 %	1290 psi @Strain 300 %	200 mm/min; DIN 53504
Elongation at Break	644 %	644 %	200 mm/min; DIN 53504
Tensile Modulus	0.0210 GPa @Temperature 60.0 °C	3.05 ksi @Temperature 140 °F	storage; ISO 6721-1,-4
	0.0290 GPa @Temperature 20.0 °C	4.21 ksi @Temperature 68.0 °F	storage; ISO 6721-1,-4
	0.180 GPa @Temperature -20.0 °C	26.1 ksi @Temperature -4.00 °F	storage; ISO 6721-1,-4
Rebound	45 %	45 %	Resilience; ISO 4662
Tear Strength	40.0 kN/m	228 pli	500 mm/min; ISO 34-1
Abrasion	80	80	mm³, Method A; ISO 4649
Compression Set	20 % @Temperature 23.0 °C	20 % @Temperature 73.4 °F	72 hr; ISO 815
	29 % @Temperature 70.0 °C	29 % @Temperature 158 °F	24 hr, Method C; ISO 815
	43 % @Temperature 70.0 °C	43 % @Temperature 158 °F	24 hr; ISO 815

Processing Properties	Metric	English	Comments
Melt Temperature	170 - 190 °C	338 - 374 °F	Extrusion
	180 - 200 °C	356 - 392 °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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PB09765 / 92605

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