Covestro Baydur® 645 Polyurethane Structural Foam RIM, Density 30 pcf

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Covestro Baydur® 645 Polyurethane Structural Foam RIM, Density 30 pcf
Categories:	Polymer; Thermoset; Polyurethane, TS; Thermoset Polyurethane Foam, Unreinforced
Material Notes:	Characterization: Baydur 645 is a rigid polyurethane structural foam system used in the reaction injection molding (RIM) process. Properties / Applications: Baydur 645 is a rigid polyurethane structural foam system used in the reaction injection molding (RIM) process. The system is supplied as two reactive liquid components. Component A is a polymeric diphenylmethane diisocyanate (PMDI), and Component B is a formulated polyol system containing no CFC- or HCFC-blowing additives. The Baydur 645 system is used to produce foam cores for composite applications, such as water skis, agricultural and construction equipment, and various components for the transportation and marine markets. As with any product, use of the Baydur 645 system in a given application must be tested (including field testing, etc.) in advance by the user to determine suitability. Information provided by Covestro
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Physical Properties	Original Value	Comments

Specific Gravity	0.480 g/cc @Thickness 6.35 mm	ASTM D792
	0.480 g/cc @Thickness 12.7 mm	ASTM D792

Mechanical Properties	Original Value	Comments
Hardness, Shore D	55 @Thickness 6.35 mm	ASTM D2240
	55 @Thickness 12.7 mm	ASTM D2240
Tensile Strength at Break	10.0 MPa @Thickness 12.7 mm	ASTM D638
	12.0 MPa @Thickness 6.35 mm	ASTM D638
Elongation at Break	7.0 % @Thickness 6.35 mm	ASTM D638
	9.0 % @Thickness 12.7 mm	ASTM D638
Flexural Strength	16.5 MPa @Thickness 6.35 mm	ASTM D790
	20.0 MPa @Thickness 12.7 mm	ASTM D790
Flexural Modulus	517 MPa @Thickness 12.7 mm	ASTM D790
	572 MPa @Thickness 6.35 mm	ASTM D790
Compressive Strength	10.3 MPa @Thickness 6.35 mm	ASTM D695
	10.3 MPa @Thickness 12.7 mm	ASTM D695
Charpy Impact Unnotched	8.82 kJ/m² @Thickness 6.35 mm
	9.03 kJ/m² @Thickness 12.7 mm

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PCOVEST0085 / 201868

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