Röhm CYROLITE GS-90 Acrylic-Based Multipolymer Compound

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Röhm CYROLITE GS-90 Acrylic-Based Multipolymer Compound
Categories:	Polymer; Thermoplastic; Acrylic (PMMA); Acrylic, Gamma Radiation Resistant, Molded
Material Notes:	CYROLITE GS-90 compound is an impact-modified acrylic-based multipolymer for molding and extrusion of medical applications. Typical properties of CYROLITE 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 resistance to EtO, gamma and E-beam sterilization The special properties of CYROLITE GS-90 compound are: superior gamma sterilization color stability excellent melt flow rate very good transmission and clarity Applications: Used for injection molding and extrusion of medical devices, medical packaging, as well as toys and appliance parts. Information Provided by Evonik CYRO. The former Evonik Methacrylates business has been sold to Röhm (Roehm) GmbH.
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Physical Properties	Metric	English	Comments

Specific Gravity	1.11 g/cc	1.11 g/cc	ASTM D792
Bulk Density	0.650 g/cc	0.0235 lb/in³	ASTM D1895
Water Absorption	<= 0.30 %	<= 0.30 %	ASTM D570
Linear Mold Shrinkage	0.0040 - 0.0060 cm/cm	0.0040 - 0.0060 in/in	ASTM D951
Melt Flow	6.5 g/10 min @Load 5.00 kg, Temperature 230 °C	6.5 g/10 min @Load 11.0 lb, Temperature 446 °F	ASTM D1238

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell M	30	30	ASTM D785
Tensile Strength at Break	43.4 MPa	6300 psi	ASTM D638
Elongation at Break	6.7 %	6.7 %	ASTM D638
Elongation at Yield	3.6 %	3.6 %	ASTM D638
Tensile Modulus	2.96 GPa	430 ksi	ASTM D638
Flexural Strength	74.5 MPa	10800 psi	ASTM D790
Flexural Modulus	2.28 GPa	330 ksi	ASTM D790
Izod Impact, Notched	1.07 J/cm @Diameter 6.35 mm	2.00 ft-lb/in @Diameter 0.250 in	BAR; ASTM D256
	0.427 J/cm @Diameter 6.35 mm, Temperature 0.000 °C	0.800 ft-lb/in @Diameter 0.250 in, Temperature 32.0 °F	BAR; ASTM D256

Thermal Properties	Metric	English	Comments
CTE, linear	72.0 µm/m-°C @Temperature 0.000 - 100 °C	40.0 µin/in-°F @Temperature 32.0 - 212 °F	ASTM D696
Deflection Temperature at 1.8 MPa (264 psi)	72.8 °C @Thickness 6.35 mm	163 °F @Thickness 0.250 in	Annealed; ASTM D648
Vicat Softening Point	98.9 °C	210 °F	ASTM D1525

Optical Properties	Metric	English	Comments
Refractive Index	1.51	1.51	ASTM D542
Haze	3.0 %	3.0 %	ASTM D1003
Yellow Index	-0.300 %	-0.300 %	ASTM E313
Transmission, Visible	89 %	89 %	ASTM D1003

Processing Properties	Metric	English	Comments
Middle Barrel Temperature	191 - 232 °C	375 - 450 °F	Cylinder Temp
Melt Temperature	210 - 232 °C	410 - 450 °F
Mold Temperature	48.9 - 82.2 °C	120 - 180 °F
Drying Temperature	71.1 °C	160 °F
Dry Time	3 - 4 hour	3 - 4 hour

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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