VICI Jour Physical Data about PEEK and other Polymers

Physical Data about the PEEK and Other Polymers that We Use

PTFE = Polytetrafluor ethylene
FEP = Fluorinated ethylene propylene
PFA = Perfluoralkoxy
ETFE = Ethylenetetra fluoroethylene
PVDF = Polyvinylidene fluoride
PEEK = Polyether ether ketone

Specification	ASTM Method	PTFE	FEP	PFA	ETFE	PVDF	PEEK
Tensile Strength kp/cm2	D638	220	210	280	450	400	970 (ISO R257)
Elongation %	D638	350	300	300	200	50	150 (ISO R257)
Flexural modulus kp/cm2	D790	6800	6800	6800	14000	17500	41.000 (ISO R178)
Hardness	D785	D55	D55	D55	D75	D78	D126
Melting point °C		+327	+279	+305	+270	+180	+340
Max service temp °C		+260	+200	+260	+150	+130	+240
Low temp °C		-200	-200	-200	-200	-20	-100
Non flammability		Exc.	Exc.	Exc.	Very good	Very good	Exc.
Water absorbtion 20°C, %		< 0.01	< 0.01	< 0.01	< 0.01	< 0.3	< 0.5
Weather resistance		Exc.	Exc.	Exc.	Exc.	Very good	Exc.
Density g/cm3	D792	2.1	2.1	2.1	1.7	1.8	1.3 (ISO 250)
Dielectric constant 100 Hz, 1 kHz, 1 MHz	D150	2.1	2.1	2.1	2.6	7.7	3.2 (50HZ – 100 MHz)
Dissipation factor (106Hz)	D150	0.0002	0.0007	0.0002	0.005	0.018	0.003 (ISO 112)
Resistance against organic solvents		Exc.	Exc.	Exc.	Very good	Good	Very good
Resistance against acids and alkalies		Exc.	Exc.	Exc.	Very good	Good	Poor with acids Good with alkalines
Flexibility		Good	Good	Good	Good	Fair	Good
Radiation resistance, rad		105	106	106	108	108	109