Chevron Phillips Ryton® R-7-220NA Polyphenylene Sulfide Resin

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Chevron Phillips Ryton® R-7-220NA Polyphenylene Sulfide Resin (discontinued **)
Categories:	Polymer; Thermoplastic; Polyphenylene Sulfide (PPS)
Material Notes:	Ryton® R-7-220 is a glass and mineral filled polyphenylene sulfide compound developed to provide good mechanical strength and enhanced hydrolytic stability in applications requiring constant or repeated exposure to high temperature water. Measured on 102mm x 102mm x 3.2 mm plaques, edge gated. Information provided by Chevron Phillips Solvay Specialty Polymers has acquired the Ryton product line. This product was discontinued prior to the acquisition and is listed under the Chevron Phillips name for historical purposes.
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Physical Properties	Original Value	Comments

Density	1.95 g/cc	ISO 1183A
Water Absorption	0.020 %	ASTM D-570
Linear Mold Shrinkage, Flow	0.0020 cm/cm
Linear Mold Shrinkage, Transverse	0.0050 cm/cm

Mechanical Properties	Original Value	Comments
Tensile Strength, Yield	165 MPa	ISO 527
Elongation at Yield	1.2 %	ISO 527
Flexural Strength	255 MPa	ISO 178
Flexural Modulus	19.0 GPa	ISO 178
Compressive Strength	275 MPa	ISO 604
Izod Impact, Notched (ISO)	7.00 kJ/m²	ISO 180A
Izod Impact, Unnotched (ISO)	25.0 kJ/m²	ISO 180A

Electrical Properties	Original Value	Comments
Volume Resistivity	1.00e+15 ohm-cm	ASTM D-257
Dielectric Constant	4.5 @Frequency 1000 Hz	ASTM D-150
	4.5 @Frequency 1e+6 Hz	ASTM D-150
Dielectric Strength	18.0 kV/mm	ASTM D-149
Dissipation Factor	0.0020 @Frequency 1000 Hz	ASTM D-150
	0.0030 @Frequency 1e+6 Hz	ASTM D-150
Arc Resistance	180 sec	ASTM D-495

Thermal Properties	Original Value	Comments
CTE, linear	15.0 µm/m-°C @Temperature -50.0 - 50.0 °C	Axial; ISO 11359-2
	15.0 µm/m-°C @Temperature 100 - 200 °C	Axial; ISO 11359-2
CTE, linear, Transverse to Flow	30.0 µm/m-°C @Temperature -50.0 - 50.0 °C	ISO 11359-2
	70.0 µm/m-°C @Temperature 100 - 200 °C	ISO 11359-2
Deflection Temperature at 1.8 MPa (264 psi)	>= 260 °C	ISO 75
Flammability, UL94	V-0

Processing Properties	Original Value	Comments
Melt Temperature	315 - 345 °C
Mold Temperature	135 °C

Descriptive Properties
Hydrolytic Stability; Tensile Strength Retained	>75%	1000 hr in water at 140°C
Hydrolytic Stability; Weight Gain %	<1	1000 hr in water at 140°C

**
Materials flagged as discontinued () are no longer part of the manufacturer’s standard product line according to our latest information. These materials may be available by special order, in distribution inventory, or reinstated as an active product. Data sheets from materials that are no longer available remain in MatWeb to assist users in finding replacement materials.

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