Lubrizol Estane® S198A Thermoplastic Polyurethane

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Lubrizol Estane® S198A Thermoplastic Polyurethane (discontinued **)
Categories:	Polymer; Thermoplastic; Polyurethane, TP; Thermoplastic Polyurethane (TPUR), Polyester Grade
Material Notes:	Type: Estane® S198A is a Shore 98A, polyester grade thermoplastic polyurethane (TPU). FDA approved (21 CFR 177.2600, 177.1680). Uses: Injection Molding. Availability: Americas, Europe, Middle East, Africa, India and Asia Information Provided by The Lubrizol Corporation
Key Words:	TPU
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Physical Properties	Metric	English	Comments

Specific Gravity	1.23 g/cc	1.23 g/cc	ASTM D792
Linear Mold Shrinkage	0.0080 cm/cm	0.0080 in/in	ASTM D955

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	98	98	ASTM D2240
Hardness, Shore D	55	55	ASTM D2240
Tensile Strength, Ultimate	49.0 MPa	7110 psi	ASTM D412
Tensile Strength, Yield	15.7 MPa	2280 psi	at 100% elongation; ASTM D412
	29.4 MPa	4270 psi	at 300% elongation; ASTM D412
Elongation at Break	520 %	520 %	ASTM D412
Tear Strength	177 kN/m	1010 pli	Die C; ASTM D624
Abrasion	25	25	mm³ loss; ISO 4649
Compression Set	20 % @Temperature 23.0 °C, Time 79200 sec	20 % @Temperature 73.4 °F, Time 22.0 hour	ASTM D395
	40 % @Temperature 70.0 °C, Time 79200 sec	40 % @Temperature 158 °F, Time 22.0 hour	ASTM D395

Thermal Properties	Metric	English	Comments
Vicat Softening Point	143 °C	289 °F	ASTM D1525

Processing Properties	Metric	English	Comments
Feed Temperature	190 - 205 °C	374 - 401 °F
Nozzle Temperature	200 - 215 °C	392 - 419 °F
Mold Temperature	10.0 - 40.0 °C	50.0 - 104 °F
Drying Temperature	70.0 - 80.0 °C	158 - 176 °F
Dry Time	4.00 - 5.00 hour	4.00 - 5.00 hour
Injection Pressure	11.7 - 15.9 MPa	1700 - 2300 psi
Hold Pressure	8.27 - 12.4 MPa	1200 - 1800 psi
Back Pressure	0.207 - 0.552 MPa	30.0 - 80.0 psi
Cycle Time - Injection	25 - 35 sec	25 - 35 sec
Screw Speed	180 - 220 rpm	180 - 220 rpm

Compliance Properties	Metric	English	Comments
FDA	Yes	Yes

Descriptive Properties
Injection Time (s)	12-18
Metering Zone	200-215°C

**
Materials flagged as discontinued () are no longer part of the manufacturer’s standard product line according to our latest information. These materials may be available by special order, in distribution inventory, or reinstated as an active product. Data sheets from materials that are no longer available remain in MatWeb to assist users in finding replacement materials.

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