Entec Enflex® S4025A Styrenic Block, TPE

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Entec Enflex® S4025A Styrenic Block, TPE
Categories:	Polymer; Thermoplastic; Elastomer, TPE; Styrenic TPE
Material Notes:	Product Description: 25 Shore A TPE (Styrenic Block Copolymer based) available in black and natural for injection molding and extrusion applications. This grade offers soft/tactile feel, adhesion (overmolding or co-extrusion) to Polypropylene and good sealing performance. Availability: North America Features: Acid Resistant; Alcohol Resistant; Base Resistant; Detergent Resistant; Good Adhesion; Good Colorability; Good Processability; High Elasticity; Low Compression Set; Oil Resistant; Ozone Resistant; Recyclable Material; Soft; Solvent Resistant; UV Resistant Appearance: Black; Natural Color Processing Method: Extrusion; Injection Molding Information provided by Entec Polymers
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Physical Properties	Metric	English	Comments

Density	0.890 g/cc	0.0322 lb/in³	ASTM D792
Melt Flow	8.0 g/10 min @Load 2.16 kg, Temperature 230 °C	8.0 g/10 min @Load 4.76 lb, Temperature 446 °F	ASTM D1238

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	23 @Time 10.0 sec	23 @Time 0.00278 hour	Extruded; ASTM D2240
	25 @Time 10.0 sec	25 @Time 0.00278 hour	Injection Molded; ASTM D2240
Tensile Strength at Break	3.62 MPa	525 psi	ASTM D412
Tensile Stress	0.862 MPa @Strain 100 %	125 psi @Strain 100 %	ASTM D412
Elongation at Break	750 %	750 %	ASTM D412
Tear Strength	18.4 kN/m	105 pli	ASTM D624
Compression Set	17 % @Temperature 22.8 °C, Time 79200 sec	17 % @Temperature 73.0 °F, Time 22.0 hour	ASTM D395B
	59 % @Temperature 70.0 °C, Time 79200 sec	59 % @Temperature 158 °F, Time 22.0 hour	ASTM D395B

Thermal Properties	Metric	English	Comments
Brittleness Temperature	-59.0 °C	-74.2 °F	ASTM D746

Processing Properties	Metric	English	Comments
Processing Temperature	160 - 177 °C	320 - 350 °F	Hopper, Extrusion
Rear Barrel Temperature	171 - 199 °C	340 - 390 °F
Middle Barrel Temperature	177 - 210 °C	350 - 410 °F
Front Barrel Temperature	191 - 221 °C	375 - 430 °F
Nozzle Temperature	199 - 229 °C	390 - 445 °F
Zone 1	171 - 191 °C	340 - 375 °F
Zone 3	179 - 199 °C	355 - 390 °F
Zone 5	191 - 210 °C	375 - 410 °F
Adapter Temperature	191 - 210 °C	375 - 410 °F
Die Temperature	191 - 210 °C	375 - 410 °F
Melt Temperature	191 - 199 °C	375 - 390 °F	Extrusion
	199 - 221 °C	390 - 430 °F	Injection
Mold Temperature	10.0 - 48.9 °C	50.0 - 120 °F	Injection
Drying Temperature	65.6 - 71.1 °C	150 - 160 °F	Injection
	65.6 - 71.1 °C	150 - 160 °F	Extrusion
Dry Time	2.00 - 3.00 hour	2.00 - 3.00 hour
Injection Pressure	5.17 - 8.96 MPa	750 - 1300 psi
Cushion	0.508 - 1.27 cm	0.200 - 0.500 in
Screw Speed	50 - 200 rpm	50 - 200 rpm	Injection
	100 - 200 rpm	100 - 200 rpm	Extrusion

Descriptive Properties
Dynamic Service Temperature	194°F

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.

PENTB625 / 311318

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