GEHR Plastics PMMA Acrylic

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GEHR Plastics PMMA Acrylic
Categories:	Polymer; Thermoplastic; Acrylic (PMMA)
Material Notes:	Polymethylmethacrylate is refractory and shows a good mechanical strength, tensile strength and hardness. PMMA is also scratch resistant and easy to polish. It shows good temperature resistance and UV-stability. The operating temperature of PMMA ranges from -40°C to approximately 70°C. Properties: very high mechanical strength and hardness high mechanical rigidity excellent transparency easy to polish good thermal stability good insulation properties low water absorption excellent weather resistance possible stress problems low chemical resistance brittle Applications: Display Advertisement food industry conduit pipe for milk tubes for lamps hand rails automotive parts
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Physical Properties	Metric	English	Comments

Specific Gravity	1.19 g/cc	1.19 g/cc	ISO 1183
Moisture Absorption at Equilibrium	0.40 %	0.40 %	ISO 62
Water Absorption at Saturation	2.1 %	2.1 %	ISO 62

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	90	90	ISO 868
Tensile Strength, Yield	72.0 MPa	10400 psi	ISO 527
Elongation at Break	8.0 %	8.0 %	ISO 527
Modulus of Elasticity	3.215 GPa	466.3 ksi	ISO 527
Charpy Impact Unnotched	2.00 J/cm²	9.52 ft-lb/in²	ISO 179

Electrical Properties	Metric	English	Comments
Volume Resistivity	3.00e+13 ohm-cm	3.00e+13 ohm-cm	IEC 60093
Surface Resistance	>= 1.00e+13 ohm	>= 1.00e+13 ohm	IEC 60093
Dielectric Constant	2.8 @Frequency 1e+6 Hz	2.8 @Frequency 1e+6 Hz	IEC 60250
Dielectric Strength	30.0 kV/mm	762 kV/in	IEC 60243-1
Dielectric Loss Index	0.030 @Frequency 1e+6 Hz	0.030 @Frequency 1e+6 Hz	IEC 60250
Comparative Tracking Index	600 V	600 V	IEC 60112

Thermal Properties	Metric	English	Comments
CTE, linear	80.0 µm/m-°C	44.4 µin/in-°F	ISO 11359
Thermal Conductivity	0.190 W/m-K @Temperature 20.0 °C	1.32 BTU-in/hr-ft²-°F @Temperature 68.0 °F	ISO 22007-4
Melting Point	106 °C	223 °F	DIN EN ISO 3146
Maximum Service Temperature, Air	70.0 °C	158 °F	UL 746B
Deflection Temperature at 0.46 MPa (66 psi)	100 °C	212 °F	ISO 75
Deflection Temperature at 1.8 MPa (264 psi)	95.0 °C	203 °F	ISO 75
Vicat Softening Point	103 °C	217 °F	VST/B/50; ISO 306
Glass Transition Temp, Tg	106 °C	223 °F	DIN EN ISO 3146
Flammability, UL94	HB	HB	test results without UL registration; UL 94
Oxygen Index	17 %	17 %	ASTM D2863

Optical Properties	Metric	English	Comments
Transmission, Visible	90 %	90 %	"transparent" but not quantified

Compliance Properties	Metric	English	Comments
FDA	Yes	Yes	Physiological indifference

Descriptive Properties
Acid Resistance	yes
Aromatic Resistance	no
Bondability	yes
CKW Resistance	limited
Color	transparent
Hydrocarbonate Resistance	yes
Hydroxide Resistance	yes
Ketone Resistance	limited
Physiological indifference	yes, EEC
Resistance Against Hot Water	limited
UV Stabilization	yes

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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