RT18 PMP Granules

Goodfellow’s RT18 PMP Granules are made of polymethylpentene, a thermoplastic polymer. They are characterized by high impact strength, low density, and good chemical resistance. The granules are well suited to injection molding applications that require precision parts with tight tolerances. They also work well for extrusion processes to create continuous profiles or films. As part of Goodfellow’s range of thermoplastic polymer granules, RT18 PMP Granules enable the production of durable, lightweight components across industrial sectors.

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100g

200g

300g

500g

$180.04each
5+ for $145.83ea
10+ for $133.23ea

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$191.41each
5+ for $155.04ea
10+ for $141.64ea

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$201.64each
5+ for $163.33ea
10+ for $149.22ea

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$220.29each
5+ for $178.43ea
10+ for $163.01ea

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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