Covestro Baydur® 646 Polyurethane Structural Foam RIM, Density 25 pcf, MDI-based 2-Component Liquid System

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Covestro Baydur® 646 Polyurethane Structural Foam RIM, Density 25 pcf, MDI-based 2-Component Liquid System (discontinued **)
Categories:	Other Engineering Material; Composite Core Material; Polymer; Thermoset; Polyurethane, TS; Thermoset Polyurethane Foam, Unreinforced
Material Notes:	0.25 in. thickness. RIM = Reaction Injection Molding Information provided by Bayer Corporation, Polyurethanes Division 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	0.400 g/cc	ASTM D792
Apparent Bulk Density	0.400 g/cc	ASTM D792

Mechanical Properties	Original Value	Comments
Hardness, Shore D	46	ASTM D2240
Tensile Strength, Ultimate	8.30 MPa	ASTM D638/D412
Elongation at Break	7.0 %	ASTM D638/D412
Flexural Yield Strength	14.0 MPa	ASTM D790
Flexural Modulus	0.470 GPa	ASTM D790
Compressive Yield Strength	7.90 MPa	ASTM D395
Charpy Impact, Notched	0.740 J/cm²	Bayer Test

**
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PB2B02 / 26577

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