Torlon® 4435 / Bearing Grade Polyamide/imide Rod

Grade: Torlon® 4435 / Bearing Grade

Formula: PAI

Form: Rod

Material: Polyamide/imide (PAI)

Commodity: Polymers

Torlon® 4435 Polyamide/Imide Rods are high-performance plastic rods available in 18 variations. Known for its high strength and stiffness at elevated temperatures, as well as its chemical resistance, Torlon 4435 has applications in the aerospace, automotive, and oil and gas industries. These rods can be machined to high precision dimensions for use as bearings, bushings, rollers, and other demanding mechanical parts needing durability, dimensional stability and low friction properties. With their unique set of characteristics, Torlon 4435 rods offer engineers a versatile design material for harsh environments.

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Technical Data Sheet Safety Data Sheet Tolerance Properties

each

Tolerances

Rod

Diameter		+20% / -10%

Material Properties for Polymers

Chemical Resistance

Element	Value
Acids - concentrated	Fair-Poor
Acids - dilute	Fair
Alcohols	Good-Poor
Alkalis	Poor
Aromatic hydrocarbons	Good
Greases and Oils	Good
Halogenated Hydrocarbons	Good-Poor
Halogens	Good-Poor
Ketones	Good

Electrical Properties

Element	Value
Dielectric constant @1MHz	3.9-5.4
Dissipation factor @ 1MHz	0.03-0.042
Dielectric strength( kV mm⁻¹ )	23at 1mm
Surface resistivity( Ohm/sq )	8-50 x 10¹⁷
Volume resistivity( Ohmcm )	0.08-2 x 10¹⁷

Physical Properties

Element	Value
Flammability	V0
Radiation resistance	Good
Resistance to Ultra-violet	Good
Limiting oxygen index( % )	44-45
Water absorption - equilibrium( % )	03-Apr
Water absorption - over 24 hours( % )	0.3
Density( gcm⁻³ )	1.42-1.46

Mechanical Properties

Element	Value
Hardness - Rockwell	E72-86
Poisson's ratio	0.38
Elongation at break( % )	Jul-15
Tensile modulus( GPa )	4.5-6.8
Izod impact strength( J m⁻¹ )	60-140- notched
Tensile strength( MPa )	110-190

Thermal Properties

Element	Value
Heat-deflection temperature - 1.8MPa( C )	278-9
Lower working temperature( C )	-200
Upper working temperature( C )	200-260
Specific heat( J K⁻¹ kg⁻¹ )	1000
Thermal conductivity( W m⁻¹ K⁻¹ )	0.26-0.54@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	25-31