Lubrizol Estagrip® ST80A Thermoplastic Polyurethane

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Lubrizol Estagrip® ST80A Thermoplastic Polyurethane
Categories:	Polymer; Thermoplastic; Polyurethane, TP
Material Notes:	Type: Estagrip ST80A TPU is an 80A polyether-type thermoplastic polyurethane Description: Low durometer soft feel for excellent grip; outstanding adhesion Uses: Injection molding; over molding Information provided by The 159 Corporation
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Physical Properties	Original Value	Comments

Specific Gravity	1.06 g/cc	ASTM D-792
Maximum Moisture Content	0.020

Mechanical Properties	Original Value	Comments
Hardness, Shore A	77 - 83	ASTM D-2240
Tensile Strength	22.8 MPa	ASTM D-412
Elongation at Break	750 %	ASTM D-412
100% Modulus	3.70 MPa @Strain 100 %	ASTM D-412
300% Modulus	6.70 MPa @Strain 300 %	ASTM D-412
Graves Tear Strength	390 pli	ASTM D-624 (die C)
Taber Abrasion, mg/1000 Cycles	45 @Load 1.00 kg	[mg], H18; ASTM D-3389

Thermal Properties	Original Value	Comments
Glass Transition Temp, Tg	-51.0 °C

Processing Properties	Original Value	Comments
Rear Barrel Temperature	193 °C
Middle Barrel Temperature	204 °C
Front Barrel Temperature	216 °C
Nozzle Temperature	216 °C
Melt Temperature	219 °C
Mold Temperature	5.00 - 25.0 °C
Drying Temperature	104 °C @Time 7200 - 14400 sec
Dew Point	-40.0 °C
Injection Pressure	290 - 1450 psi
Hold Pressure	145 - 725 psi
Back Pressure	30.0 - 50.0 psi
Screw Speed	30 - 80 rpm

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PLUBR5030 / 238900

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