PPS (POLY(PHENYLENE SULPHIDE))
RYTON®   FORTRON®   TEDUR®

SPECIFICATIONS:

FDA TITLE 21 CFR 121.2621
ASTM D4067

NATURAL COLOUR:
   LIGHT TAN

PPS, as another of the crystalline, high temperature resistant polymers, exhibits very good chemical and flame resistance along with high strength and good electrical insulation properties both of which are maintained at high temperatures. However, PPS is a brittle material and is often filled with a variety of materials; glass fibres to improve strength and toughness, carbon fibres to improve toughness and tribiological properties, PTFE and/or silicone oil to reduce friction and wear for bearing applications, carbon fibres to improve toughness, strength, tribiological properties and to reduce the wear factor and galling associated with glass fibre reinforcement. Some PPS composite grades meet severe FAA Fire Safety Regulations due to their flame resistance, high flash and self-ignition temperatures, low smoke density and low toxicity of smoke gases. Unfilled PPS meeting FDA regulations has no known solvents at temperatures below 400°F and is slowly affected by concentrated oxidizing acids and amines and halogens above 400°F. PPS machines well due to its hardness, stiffness, thermal resistance and dimensional stability with any machining lubricant being suitable. Polar adhesives must be used for bonding.

GENERAL PROPERTIES
  ASTM
test		 Unfilled 45%
Glass		 Mineral
Filled		 30%
Glass
15%
PTFE		 30%
Graphite
15%
PTFE
SPECIFIC GRAVITY   D792 1.35 1.78 1.90 1.80 1.58
TENSILE STRENGTH psi D638 10000 21000 22800 17000 17500
TENSILE MODULUS 105 psi D638 3.6 8.2 9.0 6.5  
ELONGATION % D638 3 2 2 5  
FLEXURAL STRENGTH psi D790 20000 37000 38200 33000 23000
FLEXURAL MODULUS 105 psi D790 4.2 12.8 13.0 12.0 13.9
COMPRESSIVE STRENGTH 10% psi D695 16000 28000 34500 25500 31000
COMPRESSIVE MODULUS 105 psi D695          
HARDNESS rockwell M D785 M93 M103 M105 M90  
IMPACT STRENGTH
(1/2" x 1/2")		 ft-lb/inch of notch D256 0.3 0.5   2.0 0.8
THERMAL EXPANSION 10-5/°F D696 3.0 2.3 1.8 2.4 2.0
HEAT RESISTANCE
(continuous in air)		 °F   4000 558 590 500  
DEFLECTION TEMPERATURE   D648          
@ 264 psi °F   278 535 510 435 500
@ 66 psi °F   400 550 550 480 515
DIELECTRIC STRENGTH v/mil D149 595 N/A 370 380 N/A
DIELECTRIC CONSTANT   D150 3.1 N/A 4.2 3.7 N/A
DISSIPATION FACTOR 10-3 D150 0.4 to 1.0 N/A 0.9 to 3.0 1.0 to 4.0 N/A
WATER ABSORPTION 24hrs % D570 0.020 0.015 0.023 0.015 0.030
FLAMMABILITY in/min D635 <0.1 <0.1 <0.1 <0.1 <0.1
BEARING PROPERTIES
WEAR FACTOR, 'K' 10-10-in3-min
ft-lb-hr		 D3702 540 N/A N/A 110 75
COEFFICIENT of FRICTION (DRY)              
against self - static 40 psi         0.08  
against self - dynamic 40 psi/50fpm         0.07  
against steel - static 40 psi   0.30 0.42   0.15 0.13
against steel - dynamic 40 psi/50fpm   0.24 0.29   0.17 0.15
LIMITING PV lb-ft/in2-min @10fpm 2500 N/A N/A 27000 268000
    @40fpm 2700 N/A N/A 30000 29700
    @100fpm 3000 N/A N/A 35000 34000
    @400fpm 3300 N/A N/A 32000 31200
    @1000fpm 4000 N/A N/A 30000 29500

PLEASE NOTE:
Values shown in the above table are averages and there will be variances from lot to lot. After selecting a material based upon these values, you must conduct tests specific to your application to be assured the material suits your needs.