PEEK Tubes - Precision Machining from China

PEEK tubes are hollow profiles made from PEEK material, commonly used to manufacture various precision components with hollow structures.

PEEK Tube Grades Available from Allstar Material

Pure PEEK
CF30 PEEK
GF30 PEEK
Bearing grade PEEK

Main Grades and Properties of PEEK Tubes

Pure PEEK Tube

Properties: No reinforcement material, maintaining the base properties of PEEK. It offers excellent mechanical strength, high-temperature resistance (up to 250°C), chemical resistance (acid, alkali, solvent resistance), and electrical insulation.

Applications: Suitable for general industrial applications, electronic devices, medical equipment, aerospace, and other fields.

CF30 PEEK Tube (30% Carbon Fiber Reinforced PEEK)

Properties: Contains 30% carbon fiber reinforcement, significantly enhancing the rigidity, wear resistance, and compressive strength of the PEEK tube. The carbon fiber reinforcement also reduces the thermal expansion coefficient and improves material stability under high load conditions.

Applications: Suitable for high-load, high-pressure environments such as automotive engine components, aerospace structures, and precision mechanical parts.

GF30 PEEK Tube (30% Glass Fiber Reinforced PEEK)

Properties: Contains 30% glass fiber, enhancing the material’s rigidity, strength, and temperature resistance. The glass fiber increases the compressive strength and dimensional stability of the PEEK tube, making it suitable for long-term use at high temperatures.

Applications: Used for components requiring high-temperature resistance, strong rigidity, and the ability to withstand large loads, such as seals, gaskets, and mechanical parts.

Bearing Grade PEEK (10% Graphite, 10% Carbon Fiber, 10% PTFE Reinforced)

Properties: Self-lubricating, high strength, high-temperature resistance (up to 250°C), excellent wear resistance, and chemical resistance.

Applications: Suitable for high-load, high-temperature, and non-lubricated environments. Widely used in bearings, sliding components, pumps, valves, automation equipment, and industrial parts requiring corrosion resistance and wear resistance.

Properties of Different Grades of PEEK Plates

Mechanical Behavior

Item			Material Grade
			Pure PEEK	GF30 PEEK	CF30 PEEK	Bearing grade PEEK
	Test Standard or Instrument	Unit	100%PEEK	PEEK+30%Glass Fiber	PEEK+30%Carbon Fiber	PEEK+10%Carbon Fiber+10%Graphite+10%PTFE
Tensile strength(23°C)	ISO527	MPa	100	155	220	134
Bending strength(23°C)	ISO 178	MPa	163	212	298	186
Compressive strength(23°C)	ISO 604	MPa	118	215	240	150
Lzod impact strength( no gap)	ISO 180/IU	kJ/m²	No Crack	51	46	32

Thermal Performance

Item			Material Grade
			Pure PEEK	GF30 PEEK	CF30 PEEK	Bearing grade PEEK
	Test Standard or Instrument	Unit	100%PEEK	PEEK+30%Glass Fiber	PEEK+30%Carbon Fiber	PEEK+10%Carbon Fiber+10%Graphite+10%PTFE
Melting point	DSC 11357	°C	343	343	343	343
Distortion temperature	ISO 75-1/2	°C	163	315	315	293
Continuous using temperature	UL 74685	°C	260	260	260	260
Coefficient of thermal expansion	ASTM D696	10 -5°C	4.7	2.2	1.5	2.2
Flammable level	UL 94	V-0@mm	1.5	1.5	1.5	0.75

Electrical Performance

Item			Material Grade
			Pure PEEK	GF30 PEEK	CF30 PEEK	Bearing grade PEEK
	Test Standard or Instrument	Unit	100%PEEK	PEEK+30%Glass Fiber	PEEK+30%Carbon Fiber	PEEK+10%Carbon Fiber+10%Graphite+10%PTFE
Dielectric strength	IEC 60243-1	kV/mm	18	19
Dielectric constant	IEC60250	–	3.2	3.3
Surface resistivity		Ω	10¹⁵	10¹⁵	3*10⁶	5*10⁶

Other Performance

Item			Material Grade
			Pure PEEK	GF30 PEEK	CF30 PEEK	Bearing grade PEEK
			100%PEEK	PEEK+30%Glass Fiber	PEEK+30%Carbon Fiber	PEEK+10%Carbon Fiber+10%Graphite+10%PTFE
	Test Standard or Instrument	Unit
Density	ISO 1183	g/cm³	1.3±0.01	1.5±0.01	1.4±0.01	1.43±0.01
Rockwell hardness	ISO 2039	HRR	118	119	121	108
Friction coefficient		μ	0.30-0.38	0.38-0.46	0.28	0.18
Water Abs. (25°C.24Hrs)	ISO 62	%	0.5	0.11	0.06	0.06
Mould shrinking percentage	3mm,170°C, Flow direction	%	1.2	0.4	0.1	0.3
Mould shrinking percentage	Perpendicular to flow direction	%	1.5	0.8	0.5	0.5

Allstar Material PEEK tubes stock specifications

Standard Size Ranges Available:

Outer Diameter: 20-300mm (stock sizes)
Inner Diameter: 12-280mm
Wall Thickness: 2-50mm
Standard Length: 3000mm (custom lengths available)

Machining Methods for Allstar Material PEEK Rods

Extrusion

Extrusion became our go-to process after we solved the dimensional consistency challenges that plagued our early attempts. The breakthrough came when we realized that PEEK's narrow processing window required much tighter temperature control than our original equipment could provide.

Compression Molding

We developed compression molding capabilities after customers began requesting tube sizes that were impossible to extrude consistently. Large diameter tubes (>200mm OD) and thick-wall applications pushed us beyond extrusion's practical limits.

Injection Molding

Our injection molding capability evolved from customer requests for tubes with integrated features - flanges, threads, or stepped diameters that would require expensive secondary operations if made from extruded tube stock.

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