Covestro Baytec® MS-051 Polyurethane

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Covestro Baytec® MS-051 Polyurethane
Categories:	Polymer; Thermoset; Polyurethane, TS
Material Notes:	Characterization: Baytec MS-051 is a modified diphenylmethane diisocyanate (MDI)-terminated polyester prepolymer. Properties / Applications: Baytec MS-051 is a modified diphenylmethane diisocyanate (MDI)-terminated polyester prepolymer used in the manufacture of high-property solid cast polyurethane elastomers. The excellent resilience and low compression-set properties have enabled this material to be used for low-durometer wheels, printing rolls, and squeegee blades. As with any product, use of Baytec MS-051 prepolymer 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	Metric	English	Comments

Specific Gravity	1.17 g/cc @Temperature 100 °C	1.17 g/cc @Temperature 212 °F
	1.18 g/cc @Temperature 80.0 °C	1.18 g/cc @Temperature 176 °F
Viscosity	700 cP @Temperature 100 °C	700 cP @Temperature 212 °F
	2700 cP @Temperature 80.0 °C	2700 cP @Temperature 176 °F

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	80	80	BDO; ASTM D2240
	93	93	HQEE; ASTM D2240
Tensile Strength at Break	26.3 MPa	3810 psi	HQEE; ASTM D412
	37.0 MPa	5370 psi	BDO; ASTM D412
	4.41 MPa @Thickness 2540 mm	640 psi @Thickness 100 in	BDO; ASTM D412
	6.00 MPa @Thickness 5080 mm	870 psi @Thickness 200 in	BDO; ASTM D412
	8.07 MPa @Thickness 2540 mm	1170 psi @Thickness 100 in	HQEE; ASTM D412
	8.14 MPa @Thickness 7620 mm	1180 psi @Thickness 300 in	BDO; ASTM D412
	9.89 MPa @Thickness 5080 mm	1430 psi @Thickness 200 in	HQEE; ASTM D412
	11.8 MPa @Thickness 7620 mm	1710 psi @Thickness 300 in	HQEE; ASTM D412
Elongation at Break	525 %	525 %	BDO; ASTM D412
	650 %	650 %	HQEE; ASTM D412
Compressive Strength	0.241 MPa @Strain 2 %	35.0 psi @Strain 2 %	BDO; ASTM D575
	0.621 MPa @Strain 2 %	90.1 psi @Strain 2 %	HQEE; ASTM D575
	0.724 MPa @Strain 5.0 %	105 psi @Strain 5.0 %	BDO; ASTM D575
	1.52 MPa @Strain 10 %	220 psi @Strain 10 %	BDO; ASTM D575
	1.69 MPa @Strain 5.0 %	245 psi @Strain 5.0 %	HQEE; ASTM D575
	2.28 MPa @Strain 15 %	331 psi @Strain 15 %	BDO; ASTM D575
	2.90 MPa @Strain 10 %	421 psi @Strain 10 %	HQEE; ASTM D575
	3.07 MPa @Strain 20 %	445 psi @Strain 20 %	BDO; ASTM D575
	3.93 MPa @Strain 25 %	570 psi @Strain 25 %	BDO; ASTM D575
	3.96 MPa @Strain 15 %	574 psi @Strain 15 %	HQEE; ASTM D575
	5.03 MPa @Strain 20 %	730 psi @Strain 20 %	HQEE; ASTM D575
	6.21 MPa @Strain 25 %	901 psi @Strain 25 %	HQEE; ASTM D575
	10.9 MPa @Strain 50 %	1580 psi @Strain 50 %	BDO; ASTM D575
	18.4 MPa @Strain 50 %	2670 psi @Strain 50 %	HQEE; ASTM D575
Resilience	52	52	Bayshore, BDO; ASTM D2632
	54	54	Bayshore, HQEE; ASTM D2632
Tear Strength	18.4 kN/m	105 pli	Split, BDO; ASTM D1938
	49.1 kN/m	280 pli	Split, HQEE; ASTM D1938
	66.6 kN/m	380 pli	Die C, BDO; ASTM D624
	108 kN/m	615 pli	Die C, HQEE; ASTM D624
Taber Abrasion, mg/1000 Cycles	16 @Load 1.00 kg	16 @Load 2.20 lb	H-18, BDO; ASTM D4060
	34 @Load 1.00 kg	34 @Load 2.20 lb	H-18, HQEE; ASTM D4060
Compression Set	19 % @Temperature 70.0 °C, Time 79200 sec	19 % @Temperature 158 °F, Time 22.0 hour	HQEE; ASTM D395-B
	24 % @Temperature 70.0 °C, Time 79200 sec	24 % @Temperature 158 °F, Time 22.0 hour	BDO; ASTM D395-B

Thermal Properties	Metric	English	Comments
Flash Point	>= 93.0 °C	>= 199 °F

Processing Properties	Metric	English	Comments
Mold Temperature	100 - 110 °C	212 - 230 °F

Descriptive Properties
Appearance	Light amber liquid
Content	4.9-5.2%		NCO

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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PCOVEST0253 / 202036

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