UHMWPE Powder

UHMWPE Powder consists of ultra-high-molecular-weight polyethylene in fine particulate form, providing unique advantages in processing and compounding. Its extremely long polymer chains impart excellent wear resistance, high impact strength, and chemical inertness. Industries including coatings, additive manufacturing, and biomedical engineering use UHMWPE powders for specialized surface treatments, high-performance composites, and medical-grade devices. Specific applications include low-friction coatings, powder-bed fusion in 3D printing, and reinforcement in orthopedic implants. In research, UHMWPE powders are studied for functionalization with nanoparticles, tribological performance in advanced lubricants, and integration into hybrid composite systems. Their fine particle size, combined with the remarkable toughness of UHMWPE, makes them an essential material for pushing boundaries in additive manufacturing, biomedical engineering, and high-durability coatings.

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Tolerance

Properties

Reference & Citations

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Tolerances

Powder

Mean Particle Size		Nominal
Minimum Particle Size		Nominal
Maximum Particle Size		Nominal
Maximum Particle Size		Nominal
Particle Size D10		Nominal
Particle Size D50		Nominal
Particle Size D90		Nominal

Material Properties for Polymers

Chemical Resistance

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

Mechanical Properties

Element	Value
Coefficient of friction	0.1-0.2
Hardness - Rockwell	R50-70
Poisson's ratio	0.46
Elongation at break( % )	500
Tensile modulus( GPa )	0.2-1.2
Izod impact strength( J m⁻¹ )	1000
Tensile strength( MPa )	20-40

Electrical Properties

Element	Value
Dielectric constant @1MHz	2.3
Dissipation factor @ 1MHz	1-10x 10⁻⁴
Dielectric strength( kV mm⁻¹ )	28
Surface resistivity( Ohm/sq )	10¹³
Volume resistivity( Ohmcm )	10¹⁸

Physical Properties

Element	Value
Flammability	HB
Radiation resistance	Fair
Resistance to Ultra-violet	Poor
Limiting oxygen index( % )	17
Water absorption - over 24 hours( % )	0.01
Density( gcm⁻³ )	0.94

Thermal Properties

Element	Value
Heat-deflection temperature - 0.45MPa( C )	69
Heat-deflection temperature - 1.8MPa( C )	42
Upper working temperature( C )	55-95
Specific heat( J K⁻¹ kg⁻¹ )	1900
Thermal conductivity( W m⁻¹ K⁻¹ )	0.42-0.51@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	130-200