Trinseo Plexiglas® HT121 Acrylic

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Trinseo Plexiglas® HT121 Acrylic
Categories:	Polymer; Thermoplastic; Acrylic (PMMA); Acrylic, Heat Resistant, Molded
Material Notes:	Plexiglas® HT121 is a thermoplastic acrylic resin formulated for injection molding applications. It is characterized by its high heat resistance. Plexiglas® HT121 has excellent weatherability and optical properties allowing it to excel in applications requiring outdoor stability, high quality surface appearance and/or precision optics. It has excellent resistance to many chemicals including solutions of inorganic acids, alkalis and aliphatic hydrocarbons such as VM&P naphtha and heptane. Additionally, it is virtually unaffected by a wide range of commercial products including many beverages, foodstuffs, detergent solutions and cleaners. Appearance: Clear/Transparent; Colors Available; Opaque; Translucent Characteristics: High Clarity; High Scratch Resistance; Good Color Stability, Good Dimensional Stability; Low Shrinkage; Good Thermal Stability, Good UV Stability; High Heat Resistance; Good Weather Resistance Applications: Automotive Applications; Lighting Diffusers Arkema has sold the American Plexiglas® product line to Trinseo, finalized in 2021.
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Physical Properties	Metric	English	Comments

Specific Gravity	1.19 g/cc	1.19 g/cc	ASTM D792
Water Absorption	0.40 %	0.40 %	24 Hour immersion; ASTM D570
Linear Mold Shrinkage	0.0020 - 0.0060 cm/cm	0.0020 - 0.0060 in/in	ASTM D955
Melt Flow	2.6 g/10 min @Load 3.80 kg, Temperature 230 °C	2.6 g/10 min @Load 8.38 lb, Temperature 446 °F	ASTM D1238

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell M	99	99	ASTM D785
Tensile Strength, Ultimate	70.3 MPa	10200 psi	ASTM D638
Elongation at Break	3.0 %	3.0 %	ASTM D638
	3.0 %	3.0 %	ASTM D638
Tensile Modulus	3.28 GPa	475 ksi	ASTM D638
Flexural Yield Strength	<= 105 MPa	<= 15200 psi	ASTM D790
Flexural Modulus	3.28 GPa	475 ksi	ASTM D790
Izod Impact, Notched	0.160 J/cm	0.300 ft-lb/in	ASTM D256

Thermal Properties	Metric	English	Comments
Thermal Conductivity	0.187 W/m-K	1.30 BTU-in/hr-ft²-°F	ASTM C177
Deflection Temperature at 0.46 MPa (66 psi)	113 °C	235 °F	Annealing cycle: 4hrs at 95°C; ASTM D648
Deflection Temperature at 1.8 MPa (264 psi)	108 °C	226 °F	Annealing cycle: 4hrs at 95°C; ASTM D648
Vicat Softening Point	119 °C @Load 1.02 kg	246 °F @Load 2.25 lb	50°C/hr; ASTM D1525
	240 °C @Load 0.0000510 kg	464 °F @Load 0.000110 lb	50°C/hr; ASTM D1525
Flammability, UL94	HB	HB

Optical Properties	Metric	English	Comments
Refractive Index	1.49 @Wavelength 589.3 nm	1.49 @Wavelength 589.3 nm	ND; ASTM D542
Haze	<= 1.0 % @Thickness 3.17 mm	<= 1.0 % @Thickness 0.125 in	ASTM D1003
Transmission, Visible	92 % @Thickness 3.17 mm	92 % @Thickness 0.125 in	ASTM D1003

Descriptive Properties
ASTM Classification	PMMA 014 1 V2		ASTM D788

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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