Covestro Texin® 260 Thermoplastic Polyurethanes (TPU)

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Covestro Texin® 260 Thermoplastic Polyurethanes (TPU)
Categories:	Polymer; Thermoplastic; Polyurethane, TP
Material Notes:	Texin 260 resin is an aromatic polyester-based thermoplastic polyurethane with a Shore hardness of approximately 60D. It can be processed by injection molding; extrusion processes are not recommended. Properties / Applications: Texin 260 resin offers outstanding abrasion resistance, impact strength, toughness, and flexibility. It also exhibits excellent fuel and oil resistance. Texin 260 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. Typical applications include toplifts, casters, grommets, and seals. Information provided by Covestro
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Physical Properties	Original Value	Comments

Specific Gravity	1.22 g/cc	ASTM 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 Properties	Original Value	Comments
Hardness, Shore D	60	ASTM D2240
Tensile Strength at Break	60.0 MPa	ASTM D412
Tensile Stress	64.2 MPa @Treatment Temp. 100 °C, Time 252000 sec	Hot Air; 4.2% strain; ASTM D573
Tensile Stress at Strain	20.0 MPa @Strain 50 %	ASTM D412
	22.1 MPa @Strain 100 %	ASTM D412
	40.0 MPa @Strain 300 %	ASTM D412
Elongation at Break	420 %	ASTM D412
Compressive Strength	0.340 MPa	2% Deflection; ASTM D 575
	3.60 MPa	5% Deflection; ASTM D 575
	9.40 MPa	10% Deflection; ASTM D 575
	13.4 MPa	15% Deflection; ASTM D 575
	17.4 MPa	20% Deflection; ASTM D 575
	21.7 MPa	25% Deflection; ASTM D 575
	53.7 MPa	50% Deflection; ASTM D 575
Resilience	35	[%], Bayshore; ASTM D2632
Tear Strength	175 kN/m	Die C; ASTM D624
Taber Abrasion, mg/1000 Cycles	50 @Load 1.00 kg	[mg] Loss, H-18; ASTM D3489
Compression Set	27 % @Temperature 23.0 °C, Time 79200 sec	ASTM D395-B
	55 % @Temperature 70.0 °C, Time 79200 sec	ASTM D395-B

Thermal Properties	Original Value	Comments
CTE, linear	70.0 µin/in-°F	ASTM D696
Deflection Temperature at 0.46 MPa (66 psi)	60.0 °C	ASTM D648
Vicat Softening Point	190 °C	Rate A; ASTM D1525
Brittleness Temperature	>= -68.0 °F	ASTM D746
Glass Transition Temp, Tg	-15.0 °C

Processing Properties	Original Value	Comments
Rear Barrel Temperature	190 - 210 °C
Middle Barrel Temperature	190 - 215 °C
Front Barrel Temperature	200 - 220 °C
Nozzle Temperature	205 - 225 °C
Melt Temperature	210 - 220 °C
Mold Temperature	15.0 - 40.0 °C
Injection Pressure	6000 - 15000 psi
Back Pressure	<= 200 psi
Cushion	<= 0.125 in

Compliance Properties	Original Value	Comments
FDA	Yes

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PCOVEST0977 / 202760

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