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	Original Value	Comments

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

Mechanical Properties	Original Value	Comments
Hardness, Rockwell M	30	ASTM D785
Tensile Strength at Break	6300 psi	ASTM D638
Elongation at Break	6.7 %	ASTM D638
Elongation at Yield	3.6 %	ASTM D638
Tensile Modulus	430 ksi	ASTM D638
Flexural Strength	10800 psi	ASTM D790
Flexural Modulus	330 ksi	ASTM D790
Izod Impact, Notched	2.00 ft-lb/in @Diameter 6.35 mm	BAR; ASTM D256
	0.800 ft-lb/in @Diameter 6.35 mm, Temperature 0.000 °C	BAR; ASTM D256

Thermal Properties	Original Value	Comments
CTE, linear	40.0 µin/in-°F @Temperature 0.000 - 100 °C	ASTM D696
Deflection Temperature at 1.8 MPa (264 psi)	163 °F @Thickness 6.35 mm	Annealed; ASTM D648
Vicat Softening Point	210 °F	ASTM D1525

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

Processing Properties	Original Value	Comments
Middle Barrel Temperature	375 - 450 °F	Cylinder Temp
Melt Temperature	410 - 450 °F
Mold Temperature	120 - 180 °F
Drying Temperature	160 °F
Dry Time	3 - 4 hour

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