Teknor Apex Monprene® WR-12250 CLR Thermoplastic Elastomer

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Teknor Apex Monprene® WR-12250 CLR Thermoplastic Elastomer
Categories:	Polymer; Thermoplastic; Elastomer, TPE
Material Notes:	Notes: Monprene WR-12250 is a high performance clear thermoplastic elastomer designed for a variety of consumer application, including writing instrument requiring a soft, rubber-like feel. Monprene WR-12250 is a medium hardness, low density, lubricated, non-filled grade that exhibits excellent adhesion to PP for injection molding. Availability: Africa & Middle East; Asia Pacific; Europe; Latin America; North America Features: Chemical Resistant; Good Adhesion; Good Colorability; Good Flexibility; Good Moldability; Good Toughness; High Flow; Low Density; Medium Hardness; Low Specific Gravity; Lubricated; Slip; Without Fillers Uses: Consumer Applications; Flexible Grips; Handles; Overmolding; Rubber Replacement; Soft Touch Applications; Writing Instruments RoHS Compliance: RoHS Compliant Form: Pellets Processing Method: Injection Molding; Multi Injection Molding Information provided by Teknor Apex
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Physical Properties	Metric	English	Comments

Density	0.890 g/cc	0.0322 lb/in³	ASTM D792
Melt Flow	20 g/10 min @Load 2.16 kg, Temperature 190 °C	20 g/10 min @Load 4.76 lb, Temperature 374 °F	ASTM D1238

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	50 @Time 5.00 sec	50 @Time 0.00139 hour	Injection Molded; ASTM D2240
	52 @Time 1.00 sec	52 @Time 0.000278 hour	Injection Molded; ASTM D2240
Tensile Strength at Break	6.49 MPa	941 psi	Die C, 20 in/min, Across Flow; ASTM D412
	7.65 MPa	1110 psi	Die C, 20 in/min, Flow; ASTM D412
Tensile Stress at Strain	1.72 MPa @Strain 100 %	249 psi @Strain 100 %	Die C, 20 in/min, Across Flow; ASTM D412
	2.19 MPa @Strain 100 %	317 psi @Strain 100 %	Die C, 20 in/min, Flow; ASTM D412
	2.71 MPa @Strain 300 %	393 psi @Strain 300 %	Die C, 20 in/min, Across Flow; ASTM D412
	3.17 MPa @Strain 300 %	460 psi @Strain 300 %	Die C, 20 in/min, Flow; ASTM D412
Elongation at Break	630 %	630 %	Die C, 20 in/min, Across Flow; ASTM D412
	690 %	690 %	Die C, 20 in/min, Flow; ASTM D412
Tear Strength	27.9 kN/m	159 pli	Die C, 20 in/min, Across Flow; ASTM D624
	29.3 kN/m	167 pli	Die C, 20 in/min, Flow; ASTM D624
Compression Set	21 % @Temperature 22.8 °C, Time 79200 sec	21 % @Temperature 73.0 °F, Time 22.0 hour	Type 1; ASTM D395B

Processing Properties	Metric	English	Comments
Rear Barrel Temperature	182 - 204 °C	360 - 400 °F
Middle Barrel Temperature	182 - 204 °C	360 - 400 °F
Front Barrel Temperature	182 - 204 °C	360 - 400 °F
Nozzle Temperature	182 - 204 °C	360 - 400 °F
Melt Temperature	182 - 204 °C	360 - 400 °F
Mold Temperature	15.6 - 32.2 °C	60.0 - 90.0 °F
Injection Pressure	1.38 - 5.52 MPa	200 - 800 psi
Back Pressure	0.172 - 0.689 MPa	25.0 - 100 psi
Cushion	0.381 - 2.54 cm	0.150 - 1.00 in
Screw Speed	50 - 100 rpm	50 - 100 rpm

Descriptive Properties
Appearance	Clear/Transparent

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.

PTEKNQ0970 / 237461

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