TORLON BALLS

Amorphous thermoplastic material balls, they provide excellent mechanical and stiffness/thoughness features (the best ones among plastics), very good thermal stability and creep resistance, they are suitable for high temperature applications. Torlon 4301 has better friction and wear resistance properties. They are electric insulators.
Applications
Special bearings (when it is demanded lubrication absence, high temperature and wear resistance), automotive components (transmission). They are used in aviation/aerospace and electrionic industry. Applications even in naval industry and angling.
Technical name
Commercial name
Abbreviation
Polyamide-polyimide
Torlon 4301
PAI + graphite + PTFE
Polyamide-polyimide
Torlon 4203L
PAI
Physical / mechanical / thermal / electric / magnetic properties
Property
Symbol
U.o.M.
Type
Notes
Values
Density
δ
[g/cm3]
Physical
Room temp.
1.42
Young's modulus
E
[MPa]
Mechanical
4203L / 4301
4135 / 6800
Friction coefficient
µ
-
Mechanical
Room temp.
0.21
Water absorption
Aw
%
Physical
24 h
0.34
Coefficient of linear thermal expansion
α
[10^-6/ºC]
Thermal
(ΔT=0-100°C)
28
Thermal conductivity
λ
[W/(m·K)]
Thermal
Room t. 4203L / 4301
0.26 / 0.54
Volume resistivity
ρ
[Ω*m]
Electric
-
> 10^13
Relative magnetic permeability
µ
-
Magnetic
Diamagnetic
<~1
Technical data
Property
Type
U.o.M.
Values
U.o.M.
Values
Hardness
Mechanical
[Shore D]
80 - 85
-
-
Compressive yield strength
Mechanical
[MPa]
150 - 220
[psix10^3]
22 - 32
Service temperature
Thermal
[ºC]
-196 / 200
[ºF]
-320.8 / 392
Range
Diameters (min/max)
U.o.M.
Diameters (min/max)
U.o.M.
Precision Grade
1.500 - 350.000
[mm]
1/16 - 14
["]
0 - I - II - III
Corrosion Resistance
Torlon is resisting in contact with aliphatic, aromatic, chlorine and fluorine hydrocarbons, most acids compounds at moderate temperatures, automotive and aviation lubricants. Fair resistance to saturated steam, strong basis, high temperature acids.
Revision n.6


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