ECTFE

Units

Test method

Property

240-245

^.C

Melting point

1.68

Specific gravity

150

^.C

Max continuous service temperature

250-280

^.C

Oven process temperature

8

10^-5/^.C

Thermal expansion coefficient

1,700

MPa

ASTM D790

Flexural modulus @ 22^.C

1,700

MPa

ASTM D638

Tensile modulus @ 22^.C

32

MPa

ASTM D638

Yield stress @ 22^.C

48

MPa

ASTM D638

Tensile strength at break @ 22^.C

90

ASTM D785

Hardness Rockwell R

HB-2B

Hardness Pencil

70-75

ASTM D2 240

Hardness Shore D

no break

j/m

Impact strength notch Izod @ 25^.C

94 V-O

Flammability

60

%

Oxygen index

10¹⁶

ohm.cm

ASTM D257

Volume resistivity

2.5

Dielectric constant @ 1 MHz

14.5

kV/mm

Dielectric strength 3mm thick

0.009

Dissipation factor @1 MHz

>0.1

%

ASTM D570​​​​​​​

Water absorption

Permeability (cm³(STP)* mm/m²*atm*24h) *10²

0.2

O₂@ 25^.C

0.1

N₂@ 25^.C

7.5

H₂O (vapor) @ 25^.C

Permeability (g*mm/m²*24h)

0.5

HCI 37% @50^.C

0.3

Methanol @ 50^.C

0.5

H₂O (liq.) @ 50^.C

>-76

^.C

Low temperature embrittlement