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Ensinger PEI

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Covestro Texin® 250 Thermoplastic Polyurethanes (TPU)
Categories: Polymer; Thermoplastic; Polyurethane, TP

Material Notes: Characterization: Texin 250 resin is an aromatic polyester-based thermoplastic polyurethane with a Shore hardness of approximately 50D. It is processed primarily by extrusion and blow molding but can also be used for injection molding.

Properties / Applications: Texin 250 resin is characterized by a low gel content, good clarity, good abrasion resistance, and very good chemical resistance to oils, solvents, and other nonaqueous solutions. Texin 250 natural color resin complies with FDA food-contact regulations 21 CFR 177.1680 (Polyurethane Resins) and 177.2600 (Rubber Articles Intended for Repeated Use), subject to the limitations of these and any other applicable regulations. A major feature of Texin 250 resin is its wide processing window, which allows for ease of film and sheet production. Typical applications include belting, hose, cable jackets, hose jackets, athletic soles, film, tubing, and extruded profiles. As with any product, use of Texin 250 resin 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 PropertiesOriginal ValueComments
Specific Gravity 1.22 g/ccASTM D792
Linear Mold Shrinkage, Flow 0.0080 cm/cm
@Thickness 2.54 mm
ASTM D955
Linear Mold Shrinkage, Transverse 0.0080 cm/cm
@Thickness 2.54 mm
ASTM D955
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore A 95ASTM D2240
Hardness, Shore D 50ASTM D2240
Tensile Strength at Break 46.2 MPaASTM D412
Tensile Stress at Strain 11.7 MPa
@Strain 100 %
ASTM D412
 31.7 MPa
@Strain 300 %
ASTM D412
Elongation at Break 400 %ASTM D412
Flexural Modulus 36.0 MPa
@Temperature 70.0 °C
ASTM D790
 83.0 MPa
@Temperature 23.0 °C
ASTM D790
Resilience 25[%], Bayshore; ASTM D2632
Tear Strength 136 kN/mDie C; ASTM D624
Taber Abrasion, mg/1000 Cycles 70
@Load 1.00 kg
[mg] Loss, H-18; ASTM D3489
Compression Set 15 %
@Temperature 23.0 °C,
Time 79200 sec
postcured; ASTM D395-B
 35 %
@Temperature 70.0 °C,
Time 79200 sec
postcured; ASTM D395-B
 
Thermal PropertiesOriginal ValueComments
Vicat Softening Point 115 °CRate A; ASTM D1525
Glass Transition Temp, Tg -20.0 °C
 
Processing PropertiesOriginal ValueComments
Rear Barrel Temperature 180 - 200 °CExtrusion
 190 - 210 °CInjection
Middle Barrel Temperature 180 - 205 °CExtrusion
 190 - 215 °CInjection
Front Barrel Temperature 180 - 210 °CExtrusion
 200 - 220 °CInjection
Nozzle Temperature 205 - 225 °CInjection
Die Temperature 185 - 210 °CExtrusion
Melt Temperature 190 - 205 °CExtrusion
 205 - 215 °CInjection
Mold Temperature 15.0 - 40.0 °C
Injection Pressure 6000 - 15000 psiInjection
Back Pressure <= 200 psiInjection
Cushion <= 0.125 in
 
Compliance PropertiesOriginal ValueComments
FDA Yes

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 go back to viewing the property data in MatWeb's normal format.

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