PTFE Performance Table
Teflon density 2.10-2.30 × 103 kg / m3

% Of PTFE crystals

PTFE resin 93 ~ 97

PTFE article quenching 50-65

Teflon is not quenched products 63 to 85

PTFE melting point ℃ 3 27

Teflon heat distortion temperature ℃ 55
 
Teflon Vicat softening point ℃ 110
 
PTFE thermal decomposition temperature ℃> 415
 
Teflon linear expansion coefficient ( perpendicular to the direction of pressure ) 1 / ℃
 20 ~ 60 ℃ 10.3 × 10-5
20 ~ 100 ℃ 10.5 × 10-5
20 ~ 150 ℃ 11.4 × 10-5
20 ~ 200 ℃ 12.8 × 10-5
 
Teflon thermal conductivity W / m.K 0.256
 
Teflon Poisson's ratio (25 ℃) 0.40
 
Teflon Refractive index 1.37 %
 
Teflon water absorption < 0.01
 
 Teflon contact angle of water 114 ° -115 °
 
 Teflon surface expansion force N / Cm 18.5 × 10-5
 
PTFE dielectric constant (10H2) ≤ 1.8-2.2
 
Teflon volume resistivity Ωm ≥ 1 × 1015
 
Teflon surface resistivity Ω> 1010
 
Arc -resistant PTFE s ≥ 300
 
Tensile strength MPa 27.6 PTFE
 
Elongation 238 % PTFE
 
PTFE compression modulus
 MPa 280
 
PTFE compression strength 5% MPa 12.9
 
 Teflon impact strength ( notched ) KJ/m2 2.0
 
Bending strength MPa 20.7 PTFE
 
 PTFE bending modulus MPa 700
 
Teflon friction coefficient ( load 2MPa) ( Time 30mm)
 0.11

Teflon wear amount ( ibid. ) mg 249
 
Teflon wear scar width ( ibid. ) mm 15.8