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Data for Polytetrafluoroethylene

Density 2.2 g/cc
UTS 2.1 (1.0 Compressive) kpsi
Hardness 60D Shore Durometer
Heat-Deflection 65 (Usable at 260) C
Melting 327 C
Price point $11.97 Per Foot 3/4" rod, SmallParts ZRT-12-24
Recycle -

History/Interest

Discovered in 1938 when Dr. Roy Plunkett was trying to develop a new CFC refrigerant and accidentally polymerized tetrafluoroethylene to make PTFE (Teflon).

Commercially available in 1946, by 1950 DuPont was producing 1 million lbs per year.

Properties

Generally low friction (fluorine has have high electronegativity), high resistance to solvents, acids, bases,

Tough, durable

Coeff of friction w/ steel ~0.1 (second lowest after diamond-like carbon - insects canít climb PTFE walls!)

Extemely low dielectric constant (great insulator)

UV/Ozone resistant

Chemically inert

Non-elastic

Will creep

Uses

Non-stick coatings,

Bearings, bushings

Thread-sealing tape

Coating on armor-piercing ammunition (to reduce wear on firearmís rifling)

Gore-Tex is a PTFE membrane with micropores