Dow Isoplast® 2520 Polyurethane (PUR-RT), Impact Modified

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Dow Isoplast® 2520 Polyurethane (PUR-RT), Impact Modified (discontinued **)
Categories:	Polymer; Thermoplastic; Polyurethane, TP
Material Notes:	ISOPLAST® 2520 resin is an impact modified amorphous polymer with the chemical resistance of crystalline resins specially designed for medical applications. Its outstanding properties include excellent chemical resistance, high heat, low moisture sensitivity, toughness, and dimensional stability. Data provided by Dow Chemical.
Key Words:	TPUR
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Physical Properties	Metric	English	Comments

Density	1.20 g/cc	0.0434 lb/in³	ASTM Data
Linear Mold Shrinkage	0.0050 cm/cm	0.0050 in/in

Mechanical Properties	Metric	English	Comments
Tensile Strength, Ultimate	62.0 MPa	8990 psi	ASTM Data
Tensile Strength, Yield	69.0 MPa	10000 psi	ASTM Data
Elongation at Break	90 %	90 %	ASTM Data
Elongation at Yield	8.5 %	8.5 %	ISO Data
Tensile Modulus	1.79 GPa	260 ksi	ASTM Data
Izod Impact, Notched	5.30 J/cm	9.93 ft-lb/in	ASTM Data
Charpy Impact Unnotched	NB	NB	ISO Data
	NB	NB	ISO Data, Low Temp
Charpy Impact, Notched	1.40 J/cm²	6.66 ft-lb/in²	ISO Data, Low Temp
	3.60 J/cm²	17.1 ft-lb/in²	ISO Data
Instrumented Impact Total Energy	45.0 J @Temperature 23.0 °C	33.2 ft-lb @Temperature 73.4 °F

Thermal Properties	Metric	English	Comments
CTE, linear, Parallel to Flow	67.0 µm/m-°C @Temperature 20.0 °C	37.2 µin/in-°F @Temperature 68.0 °F	ASTM data
Deflection Temperature at 0.46 MPa (66 psi)	130 °C	266 °F	Unannealed; ASTM Data
	140 °C	284 °F	Annealed; ASTM Data
Deflection Temperature at 1.8 MPa (264 psi)	120 °C	248 °F	Unannealed; 140°C (284°F) annealed; ASTM Data
Vicat Softening Point	144 °C	291 °F

**
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PDW065 / 34296

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