RT18 PMP Rod

Grade: RT18

Formula: PMP TPX®

Form: Rod

Material: Polymethylpentene (PMP, TPX™)

Commodity: Polymers

Our range of RT18 PMP Rods are a thermoplastic material made from polymethylpentene (PMP). This is known for its high impact strength, low density and excellent chemical resistance. These rods are commonly used for machined parts, bearings, rollers and wear strips across industrial, chemical and food processing applications, where durability, weight savings and corrosion resistance are required. With 72 size options available, our PMP rods offer versatile solutions for prototyping and production needs.

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

Electrical Properties

Element	Value
Dielectric constant @1MHz	2.12
Dissipation factor @ 1kHz	0.0002
Volume resistivity( Ohmcm )	>10¹⁶

Physical Properties

Element	Value
Flammability	HB
Refractive index	1.463
Resistance to Ultra-violet	Poor
Limiting oxygen index( % )	17
Water absorption - over 24 hours( % )	0.01
Density( gcm⁻³ )	0.835

Mechanical Properties

Element	Value
Hardness - Rockwell	R85
Elongation at break( % )	15
Tensile modulus( GPa )	1.5
Izod impact strength( J m⁻¹ )	49
Tensile strength( MPa )	25.5

Thermal Properties

Element	Value
Heat-deflection temperature - 0.45MPa( C )	100
Heat-deflection temperature - 1.8MPa( C )	40
Lower working temperature( C )	20
Upper working temperature( C )	75-115
Specific heat( J K⁻¹ kg⁻¹ )	2000
Thermal conductivity( W m⁻¹ K⁻¹ )	0.17@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	117

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RT18 PMP Rod

Tolerances

Material Properties for Polymers