PEEK (POLYETHERETHERKETONE)
VICTREX®   ARLON®

SPECIFICATIONS:
   FDA TITLE 21 CFR 177.2415

NATURAL COLOUR:
   DARK TAN

A tough, semi-crystalline THERMOPLASTIC material; PEEK offers very good mechanical, electrical and chemical resistance properties combined with quite high temperature resistance. Particularly important is PEEK's resistance has to hydrolysis. It can withstand high temperature, high pressure steam for long periods and is used in steam valve seats and "down-the-hole" applications that are subjected to severe chemical environments. With high temperature resistance, high impact strength and high fatigue resistance, PEEK is an ideal material for compressor discs, plates and rings. PEEK has very good electrical insulation properties that are maintained at high temperatures. Equally important is the very low smoke and toxic fume emissions of PEEK on exposure to flames. Also, PEEK offers excellent radiation resistance, as good or better than Polystyrene, but with far higher temperature and physical strength capabilities and maintains it in acidic and basic environments. Oxidizers deteriorate PEEK and the only common solvent is concentrated sulphuric acid. PEEK machines well using high speed tooling with heavy cuts at high speed being possible. Water is a suitable coolant. Bonding using polar adhesives such as epoxies, etc. works well. Bonds are enhanced by mechanically or chemically etching the surface.

GENERAL PROPERTIES
  ASTM
test		 450G 450CA30 D450HF30 450GL30 PR-1045
SPECIFIC GRAVITY   D792 1.32 1.44 1.48 1.49 1.89
TENSILE STRENGTH psi D638 13300 30200 17100 22800 19600
TENSILE MODULUS 105 psi D638 5.22 18.85 10.50 14.07 12.30
ELONGATION % D638 50.0 1.3 3.0 2.2 8.0
FLEXURAL STRENGTH psi D790 24700 46100 30500 33800 43800
FLEXURAL MODULUS 105 psi D790 5.31 18.85 14.52 14.95 25.95
COMPRESSIVE STRENGTH 10% psi D695 17300 22200 21700 21600 27600
COMPRESSIVE MODULUS 105 psi D695          
HARDNESS rockwell M D785 M99 M107 M100 M103 M100
IMPACT STRENGTH
(1/2" x 1/2")		 ft-lb/inch of notch D256 1.6 1.6 1.9 1.8 2.0
THERMAL EXPANSION 10-5/°F D696 2.6 0.8 1.1 1.2 0.9
HEAT RESISTANCE
(continuous in air)		 °F   480 480 480 480 585
DEFLECTION TEMPERATURE   D648          
@ 264 psi °F   320 600 530 600 640
@ 66 psi °F   N/A N/A N/A N/A N/A
DIELECTRIC STRENGTH v/mil D149 480 N/A N/A 400 400
DIELECTRIC CONSTANT   D150 3.2 to 3.5 N/A N/A    
DISSIPATION FACTOR 10-3 D150 1 to 3 N/A N/A    
WATER ABSORPTION 24hrs % D570 0.50 0.06 0.09 0.11 0.09
FLAMMABILITY in/min D635          
BEARING PROPERTIES
WEAR FACTOR, 'K' 10-10-in3-min
ft-lb-hr		 D3702 200 60 100 N/A N/A
COEFFICIENT of FRICTION (DRY)              
against self - static 40 psi         N/A N/A
against self - dynamic 40 psi /
50fpm		         N/A N/A
against steel - static 40 psi   0.20 0.19 0.18 N/A N/A
against steel - dynamic 40 psi /
50fpm		   0.25 0.13 0.20 N/A N/A
LIMITING PV lb-ft/in2-min @10fpm 19000 41000 51000 N/A N/A
    @40fpm 18000 40000 51000 N/A N/A
    @100fpm 15800 36000 48000 N/A N/A
    @400fpm 7000 18000 40800 N/A N/A
    @1000fpm N/A 13000 31000 N/A N/A

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.


PEEK GRADES
GRADE 450G 450CA30 D450HF30 450GL30 PR-1045
           
ADDITIVE unfilled 30% carbon fibre proprietary 30% glass fibre mineral filled
           
FEATURES   - highest
  strength
- replace metals		 - high strength
- low friction
- low wear		 - high heat
  resistance
- chemical
  resistance
- high strength
- electrical
  insulation		 - ultimate in
  asbestos filled
  composite
  substitute
- highest heat
           
END USES - nuclear and
  steam valve
  seats & seals
- electrical
  insulators		 - valve plates
- compressor
  and pump
  vanes		 - bearings
  and wear parts
  at high
  pressure and
  temperature		 - electrical
  insulators
- high pressure		 - back-up rings
- electrical
  insulators
- pressure seals

PLEASE NOTE:
As a semi-crystalline polymer, natural PEEK 450G, has a different coefficient of thermal expansion above and below its glass-transition temperature (Tg). The figure shown in the GENERAL PROPERTIES chart of the PEEK cover page, as with all other materials, is the figure at room temperature. With PEEK the change at its glass transition temperature of 302°F is dramatic; up to 6.0 x 10-5 in/in/°F! You should take this into consideration in any designs where PEEK could be exposed to temperatures above Tg. The presence of fillers significantly decreases the spread between the thermal expansion values.