Covestro Desmopan® 3385A Polyurethane

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Covestro Desmopan® 3385A Polyurethane
Categories:	Polymer; Thermoplastic; Polyurethane, TP
Material Notes:	Extrusion- and injection molding grade; good wear resistance; short cycle times; high melt stability; Application; hard - soft systems; Hoses, non-reinforced; 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	Original Value	Comments

Density	1.20 g/cc	ISO 1183

Mechanical Properties	Original Value	Comments
Hardness, Shore A	85	ISO 868
Hardness, Shore D	33	ISO 868
Tensile Strength, Ultimate	52.0 MPa	200 mm/min; DIN 53504
Tensile Stress at Strain	2.00 MPa @Strain 10 %	200 mm/min; DIN 53504
	4.70 MPa @Strain 50 %	200 mm/min; DIN 53504
	5.80 MPa @Strain 100 %	200 mm/min; DIN 53504
	16.6 MPa @Strain 300 %	200 mm/min; DIN 53504
Elongation at Break	531 %	200 mm/min; DIN 53504
Tensile Modulus	0.0210 GPa @Temperature 60.0 °C	storage; ISO 6721-1,-4
	0.0280 GPa @Temperature 20.0 °C	storage; ISO 6721-1,-4
	0.0840 GPa @Temperature -20.0 °C	storage; ISO 6721-1,-4
Rebound	50 %	Resilience; ISO 4662
Tear Strength	70.0 kN/m	500 mm/min; ISO 34-1
Abrasion	25	mm³, Method A; ISO 4649
Compression Set	15 % @Temperature 23.0 °C	72 hr; ISO 815
	42 % @Temperature 70.0 °C	24 hr; ISO 815

Processing Properties	Original Value	Comments
Melt Temperature	175 - 205 °C	Extrusion
	190 - 210 °C	Injection
Mold Temperature	20.0 °C	Injection
Drying Temperature	80.0 °C

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PB09756 / 92596

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