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PTFE TLFG 3124

(PTFE with fillers)

PTFE-TLFG 3124 is a suspension Polytetrafluorethylen (PTFE), which is filled with a special sliding type carbon and additional fillers.

Since this material is able to reach extremely low friction coefficients with at the same time improved allowable pressure it is favourably suitable for use in sliding applications, especially bridge bearings.

PTFE-TLFG 3124 is manufactured according to the same guidelines as the white virgin types PTFE, which are certified according to EN 1337 for the use in bridge bearings.

The mechanic and friction data measured at the MPA Stuttgart according to the friction and deformation values for rods and sheets thicker than 5,0 mm in bridge bearing quality can be taken from the following diagram:

Property Measuring
method
Dimension PTFE
standard
white virgin
PTFE
TLBQ 3070
white virgin
PTFE
TLFG 3124
filled
Density DIN EN ISO
1183-1
kg/m3 2140 - 2200 2140 - 2200 > 2120
Tensile strength DIN EN ISO
527-1 und -3
N/mm2 23 29 - 40 > 15
Tensile elongation DIN EN ISO
527-1 und -3
% > 260 > 300 > 250
Ball thrust hardness DIN EN ISO
2039-1
N/mm2 22 23 - 33 37
dyn. coefficient of
friction dry1)
EN 1337-2 µ n.a. < 0,06 < 0,07
dyn. coefficient of
friction lubricated1)2)
EN 1337-2 µ n.a. < 0,012 < 0,02
max. allowable
pressure3)
EN 1337-2 N/mm2 20 30 45

1) At approx. 21°C, counter plate stainless steel Rz <1µm
2) Lubricated with silicon grease acc. to EN 1337
3) Load and recess of PTFE sheets according to EN 1337-2