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TDS - R-7-220
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Ryton®  R-7-220
Polyphenylene Sulfide Resins
Ryton® R-7-220 is a glass and mineral filled polyphenylene sulfide compound that provides good strength and enhanced hydrolytic stability in applications requiring constant or repeated exposure to high temperature water.
Nominal Engineering Properties(1) R-7-220NA R-7-220BL Test Method
  Tensile Strength, Ksi 24.0 22.0 ASTM D638
  Elongation, % 1.1 1.1 ASTM D638
  Flexural Strength, Ksi 37.0 36.0 ASTM D790
  Flexural Modulus, Msi 2.8 2.8 ASTM D790
  Notched Izod Impact, ft·lb/in, 1/8 in specimen 1.4 1.4 ASTM D256
  Unnotched Izod Impact, ft·lb/in, 1/8 in specimen 6.0 5.0 ASTM D256
  Compressive Strength, Ksi 43.0 43.0 ASTM D695
  Heat Deflection Temperature 264 psi,°F >500 >500 ASTM D648
  UL Temperature Index,°C ----- 220 / 240 UL 746B
  Coefficient of Linear Thermal Exp., X 10-6 in/in/°C     ASTM E831
      Axial Direction, -50°C to 50°C 15 15  
      Axial Direction, 100°C to 200°C 10 10  
      Transverse Direction, -50°C to 50°C 30 30  
      Transverse Direction, 100°C to 200°C 75 75  
  Flammability Rating V-0(4) V-0 UL 94
  Thermal Conductivity, BTU·in/hr·ft2·°F 3.5 3.5  
  Dielectric Strength, V/mil 450 450 ASTM D149
  Dielectric Constant, 78° F     ASTM D150
      1kHz 5.2 5.2  
      1MHz 4.8 4.8  
  Dissipation Factor, 78°F       ASTM D150
      1 kHz 0.03 0.03   
      1 MHz 0.01 0.01   
  Volume Resistivity, ohm·cm 1 x 1015 1 x 1015 ASTM D257
  Arc Resistance, sec 185 185 ASTM D495
  Comparative Tracking Index, V 175(4) 175 UL 746A
  Insulation Resistance, ohm (90°C, 95% RH, 48 hr) 1 x 1011 1 x 1011  
  Mold Shrinkage(2) in/in, Flow/Transverse 0.002 / 0.004 0.002 / 0.004  
  Density, g/cc 1.95 1.95 ASTM D792
  Water Absorption, % (23°C, 24 hr) 0.02 0.02 ASTM D570
  Color Natural Black  
  Hydrolytic Stability(3)      
      Tensile Strength Retained, % >75 >75  
      Weight Gain, % <1.0 <1.0  
(1) Test specimen molding conditions:  Stock Temperature, 600-650°F; Mold Temperature, 275°F
(2) Measured on 4 in X 4 in X 1/8 in Plaques, Edge Gated
(3) Test specimens aged 1000 hours in water at 140°C (284°F)
(4) This product is not currently UL Listed; test results indicate this level of performance
The nominal properties reported herein are typical of the product but do not reflect normal testing variances and therefore should not be used for specification purposes.
Ryton® R-7-220
Polyphenylene Sulfide Resins
Ryton® R-7-220 is a glass and mineral filled polyphenylene sulfide compound that provides good strength and enhanced hydrolytic stability in applications requiring constant or repeated exposure to high temperature water.
Nominal Engineering Properties(5) R-7-220NA R-7-220BL Method
  Tensile Strength, MPa 165 165 ISO 527
  Elongation, % 1.2 1.0 ISO 527
  Flexural Strength, MPa 245 240 ISO 178
  Flexural Modulus, GPa 19 19 ISO 178
  Notched Izod Impact, kJ/m2 7.5 7.5 ISO 180A
  Unnotched Izod Impact, kJ/m2 25 20 ISO 180U
  Compressive Strength, MPa 295 295 ISO 604
  Heat Deflection Temperature 1.8 MPa,°C >260 >260 ISO 75
  UL Temperature Index,°C ----- 220 / 240 UL 746B
  Coefficient of Linear Thermal Exp., X 10-6 m/m/°C     ISO 11359-2
      Axial Direction, -50°C to 50°C 15 15   
      Axial Direction, 100°C to 200°C 10 10   
      Transverse Direction, -50°C to 50°C 30 30   
      Transverse Direction, 100°C to 200°C 75 75    
  Flammability Rating V-0(8) V-0 UL 94
  Thermal Conductivity, W/m·K 0.51 0.51  
  Dielectric Strength, kV/mm 18 18 ASTM D149
  Dielectric Constant, 25°C       ASTM D150
      1kHz 5.2 5.2   
      1MHz 4.8 4.8   
  Dissipation Factor, 25°C       ASTM D150
      1 kHz 0.03 0.03   
      1 MHz 0.01 0.01   
  Volume Resistivity, ohm·cm 1 x 1015 1 x 1015 ASTM D257
  Arc Resistance, sec 185 185 ASTM D495
  Comparative Tracking Index, V 175(8) 175 UL 746A
  Insulation Resistance, ohm (90°C, 95% RH, 48 hr) 1 x 1011 1 x 1011  
  Mold Shrinkage(6) m/m, Flow/Transverse 0.002 / 0.004 0.002 / 0.004  
  Density, g/cc 1.95 1.95 ISO 1183A
  Water Absorption, % 0.02 0.02 ASTM D570
  Color Natural Black  
  Hydrolytic Stability(7)            
      Tensile Strength Retained, % >75 >75  
      Weight Gain, % <1.0 <1.0  
(5) Test specimen molding conditions:  Stock Temperature, 315-345°C; Mold Temperature, 135°C
(6) Measured on 102 mm X 102 mm X 3.2 mm Plaques, Edge Gated
(7) Test specimens aged 1000 hours in water at 140°C
(8) This product is not currently UL Listed; test results indicate this level of performance
The nominal properties reported herein are typical of the product but do not reflect normal testing variances and therefore should not be used for specification purposes.
MSDS #440880 Revision Date July, 2009
Before using this product, the user is advised and cautioned to make its own determination and assessment of the safety and suitability of the product for the specific use in question and is further advised against relying on the information contained herein as it may relate to any specific use or application. It is the ultimate responsibility of the user to ensure that the product is suited and the information is applicable to the user's  specific application. Chevron Phillips Chemical Company LP does not make, and expressly disclaims, all warranties, including warranties of merchantability or fitness for a particular purpose, regardless of whether oral or written, express or implied, or allegedly arising from any usage of any trade or from any course of dealing in connection with the use of the information contained herein or the product itself. The user expressly assumes all risk and liability, whether based in contract, tort or otherwise, in connection with the use of the information contained herein or the product itself. Further, information contained herein is given without reference to any intellectual property issues, as well as federal, state or local laws which may be encountered in the use thereof. Such questions should be investigated by the user.
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