Polypropylene Rod

Polypropylene Rod combines low density, chemical resistance, and fatigue durability, making it ideal for precision-machined components exposed to harsh service conditions. Resistant to moisture, acids, bases, and many organic solvents, it sees widespread use in chemical handling equipment, food processing systems, and marine hardware. Industries value it for corrosion-resistant fittings, wear-resistant guide rods, and lightweight mechanical supports in chemically aggressive or wet environments. Specific applications include pump components in chemical plants, machine parts for food contact applications, and rod stock for corrosion-proof structural supports. In research, Polypropylene rods are used in polymer machining trials, development of inert mechanical fixtures for experimental setups, and stress testing in corrosive and high-humidity environments. The combination of machinability, dimensional stability, and environmental inertness ensures consistent performance, making it a core material for applications where long service life and reliability are critical.

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Tolerance

Properties

Reference & Citations

each

Tolerances

Rod

Diameter		+20% / -10%

Material Properties for Polymers

Chemical Resistance

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

Mechanical Properties

Element	Value
Coefficient of friction	0.1-0.3
Hardness - Rockwell	R80-100
Elongation at break( % )	150-300, for biax film >50
Tensile modulus( GPa )	0.9-1.5, for biax film 2.2-4.2
Izod impact strength( J m⁻¹ )	20-100
Abrasive resistance - ASTM D1044( mg/1000 cycles )	13-16
Tensile strength( MPa )	25-40, for biax film 130-300,

Electrical Properties

Element	Value
Dielectric constant @1MHz	2.2-2.6
Dissipation factor @ 1MHz	0.0003-0.0005
Dielectric strength( kV mm⁻¹ )	30-40
Surface resistivity( Ohm/sq )	10¹³
Volume resistivity( Ohmcm )	10¹⁶-10¹⁸

Physical Properties

Element	Value
Flammability	HB
Radiation resistance	Fair
Refractive index	1.49
Resistance to Ultra-violet	Poor
Limiting oxygen index( % )	18
Water absorption - equilibrium( % )	0.03
Density( gcm⁻³ )	0.9

Thermal Properties

Element	Value
Heat-deflection temperature - 0.45MPa( C )	100-105
Heat-deflection temperature - 1.8MPa( C )	60-65
Lower working temperature( C )	50
Upper working temperature( C )	90-120
Specific heat( J K⁻¹ kg⁻¹ )	1700-1900
Thermal conductivity( W m⁻¹ K⁻¹ )	0.1-0.22@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	100-180