Claremont Polymer Shapes - PEEK

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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.