Dow Isoplast® 302 Polyurethane (PUR-RT), Clear Amorphous Polymer

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Dow Isoplast® 302 Polyurethane (PUR-RT), Clear Amorphous Polymer (discontinued **)
Categories:	Polymer; Thermoplastic; Polyurethane, TP
Material Notes:	ISOPLAST® 302 resin is a clear amorphous polymer with the chemical resistance of crystalline resins. Its outstanding properties include clarity, excellent chemical resistance, toughness and high heat. 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
Melt Density	1.14 g/cc	0.0412 lb/in³
Linear Mold Shrinkage	0.0050 cm/cm	0.0050 in/in

Mechanical Properties	Metric	English	Comments
Tensile Strength, Ultimate	69.0 MPa	10000 psi	ASTM Data
Tensile Strength, Yield	82.7 MPa	12000 psi	ASTM Data
Elongation at Break	30 %	30 %	ASTM Data
Elongation at Yield	6.8 %	6.8 %	ISO Data
Tensile Modulus	1.93 GPa	280 ksi	ASTM Data
Izod Impact, Notched	1.07 J/cm	2.00 ft-lb/in	ASTM Data
Charpy Impact Unnotched	NB	NB	ISO Data
	NB	NB	ISO Data, Low Temp
Charpy Impact, Notched	0.500 J/cm²	2.38 ft-lb/in²	ISO Data, Low Temp
	1.10 J/cm²	5.24 ft-lb/in²	ISO Data
Instrumented Impact Total Energy	67.8 J @Temperature 23.0 °C	50.0 ft-lb @Temperature 73.4 °F

Thermal Properties	Metric	English	Comments
CTE, linear, Parallel to Flow	57.6 µm/m-°C @Temperature 20.0 °C	32.0 µin/in-°F @Temperature 68.0 °F	ASTM data
Specific Heat Capacity	2.25 J/g-°C	0.538 BTU/lb-°F
Thermal Conductivity	0.230 W/m-K	1.60 BTU-in/hr-ft²-°F
Deflection Temperature at 0.46 MPa (66 psi)	132 °C	270 °F	Unannealed; ASTM Data
	143 °C	289 °F	Annealed; ASTM Data
Deflection Temperature at 1.8 MPa (264 psi)	116 °C	241 °F	Unannealed; 138°C (280°F) annealed; ASTM Data
Vicat Softening Point	147 °C	297 °F

Optical Properties	Metric	English	Comments
Transmission, Visible	88 %	88 %

**
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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PDW071 / 34302

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