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Elmet Technologies

Röhm CYROLITE G-20 Acrylic-Based Multipolymer Molding Compound
Categories: Polymer; Thermoplastic; Acrylic (PMMA); Acrylic, Impact Modified, Molded
Material Notes: CYROLITE G-20 compound is a impact-modified acrylic-based multipolymer for molding and extrusion of medical applications. Typical properties of CYROLITE G-20 compound are:
  • excellent chemical resistance to fats and oils
  • excellent bonding and welding capabilities
  • excellent bonding to PVC tubing
  • good impact strength
  • good light transmission
  • good heat resistance
  • good resistance to EtO, gamma and E-beam sterilization
Applications: Used for injection molding and extrusion of medical devices, medical packaging, as well as food packaging, toys and appliance parts.

Information Provided by Evonik CYRO. The former Evonik Methacrylates business has been sold to Röhm (Roehm) GmbH.

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 PropertiesMetricEnglishComments
Density 1.11 g/cc0.0401 lb/in³ASTM D792
Water Absorption <= 0.30 %<= 0.30 %ASTM D570
Viscosity 975000 cP
@Shear Rate 100 1/s,
Temperature 240 °C		975000 cP
@Shear Rate 100 1/s,
Temperature 464 °F		Approximate value
Linear Mold Shrinkage 0.0040 - 0.0070 cm/cm0.0040 - 0.0070 in/inASTM D551
Melt Flow 2.2 g/10 min
@Load 5.00 kg,
Temperature 230 °C		2.2 g/10 min
@Load 11.0 lb,
Temperature 446 °F		ASTM D1238
Spiral Flow 46.0 cm18.1 in215°C
 
Mechanical PropertiesMetricEnglishComments
Hardness, Rockwell M 3939ASTM D785
Tensile Strength, Ultimate 47.0 MPa6820 psiASTM D638
Elongation at Break 6.7 %6.7 %ASTM D638
Elongation at Yield 4.0 %4.0 %ASTM D638
Tensile Modulus 2.20 GPa319 ksiASTM D638
Flexural Yield Strength 72.0 MPa10400 psiASTM D790
Flexural Modulus 2.30 GPa334 ksiASTM D790
Compressive Yield Strength 79.0 MPa11500 psiASTM D695
Izod Impact, Notched 0.590 J/cm
@Thickness 6.35 mm,
Temperature 0.000 °C		1.11 ft-lb/in
@Thickness 0.250 in,
Temperature 32.0 °F		bar; ASTM D256
 1.01 J/cm
@Diameter 6.35 mm		1.89 ft-lb/in
@Diameter 0.250 in		bar; ASTM D256
 
Thermal PropertiesMetricEnglishComments
CTE, linear 92.5 µm/m-°C
@Temperature 0.000 - 100 °C		51.4 µin/in-°F
@Temperature 32.0 - 212 °F
Specific Heat Capacity  1.30 J/g-°C
@Temperature 25.0 °C		0.311 BTU/lb-°F
@Temperature 77.0 °F
 1.90 J/g-°C
@Temperature 100 °C		0.454 BTU/lb-°F
@Temperature 212 °F
 2.30 J/g-°C
@Temperature 175 °C		0.550 BTU/lb-°F
@Temperature 347 °F
Thermal Conductivity 0.220 W/m-K1.53 BTU-in/hr-ft²-°F
Deflection Temperature at 1.8 MPa (264 psi) 86.0 °C187 °FAnnealed; ASTM D648
Vicat Softening Point 101 °C214 °FASTM D1525
Flammability, UL94 HBHB
Oxygen Index 19 %19 %ASTM D2863
 
Optical PropertiesMetricEnglishComments
Refractive Index 1.5151.515ASTM D542
Haze 7.0 %7.0 %ASTM D1003
Yellow Index -0.300 %-0.300 %
Transmission, Visible 90 %90 %ASTM D1003
 
Processing PropertiesMetricEnglishComments
Melt Temperature 216 - 249 °C421 - 480 °F

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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