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Rulon Bearings

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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

Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesOriginal ValueComments
Specific Gravity 1.19 g/ccISO 1183
Moisture Absorption at Equilibrium 0.40 %ISO 62
Water Absorption at Saturation 2.1 %ISO 62
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 90ISO 868
Tensile Strength, Yield 72.0 MPaISO 527
Elongation at Break 8.0 %ISO 527
Modulus of Elasticity 3.215 GPaISO 527
Charpy Impact Unnotched 20.0 kJ/m²ISO 179
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 3.00e+13 ohm-cmIEC 60093
Surface Resistance >= 1.00e+13 ohmIEC 60093
Dielectric Constant 2.8
@Frequency 1e+6 Hz
IEC 60250
Dielectric Strength 30.0 kV/mmIEC 60243-1
Dielectric Loss Index 0.030
@Frequency 1e+6 Hz
IEC 60250
Comparative Tracking Index 600 VIEC 60112
 
Thermal PropertiesOriginal ValueComments
CTE, linear 80.0 µm/m-°CISO 11359
Thermal Conductivity 0.190 W/m-K
@Temperature 20.0 °C
ISO 22007-4
Melting Point 106 °CDIN EN ISO 3146
Maximum Service Temperature, Air 70.0 °CUL 746B
Deflection Temperature at 0.46 MPa (66 psi) 100 °CISO 75
Deflection Temperature at 1.8 MPa (264 psi) 95.0 °CISO 75
Vicat Softening Point 103 °CVST/B/50; ISO 306
Glass Transition Temp, Tg 106 °CDIN EN ISO 3146
Flammability, UL94 HBtest results without UL registration; UL 94
Oxygen Index 17 %ASTM D2863
 
Optical PropertiesOriginal ValueComments
Transmission, Visible 90 %"transparent" but not quantified
 
Compliance PropertiesOriginal ValueComments
FDA YesPhysiological indifference
 
Descriptive Properties
Acid Resistanceyes
Aromatic Resistanceno
Bondabilityyes
CKW Resistancelimited
Colortransparent
Hydrocarbonate Resistanceyes
Hydroxide Resistanceyes
Ketone Resistancelimited
Physiological indifferenceyes, EEC
Resistance Against Hot Waterlimited
UV Stabilizationyes

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 go back to viewing the property data in MatWeb's normal format.

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