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What type of fibre(s) do you require?


Hardy Advanced Composites Ltd manufacture composite tubes from carbon fibre, glass fibre, aramid fibre (KevlarTM) or a mixture of materials to meet our customers' requirements. The majority of the tubes are constructed using a mandrel wrapping process (also known as roll wrap) which allows the accurate placement and alignment of fibres to achieve a composite tube with the optimum balance of stiffness, strength and weight for each application.

 Range of Sizes Available


Our general tube internal diameter (ID) sizes range from 4.49 mm - 152.40 mm (0.176"-6.000") but other sizes can be manufactured up to about 325 mm (13"). Wall thicknesses range generally from 0.6 mm - 10.00 mm (0.024"-0.400") depending on diameter and intended use. Lengths up to 3600 mm (12½ft) are possible but we can offer jointed tubes to create longer lengths if required. 

 Why move from Metal to Composites?


Most people move from metal into composites because they have a specific need:


1   To reduce the weight of a component


Specific strength - this is defined as the strength of the material divided by its weight. Effectively composites' strength to weight ratio is significantly greater than its metal counterpart which is why we have replaced metal parts from aluminum through to titanium using composite tubes. Local reinforcements are also available where required.


2   Improved resistance to corrosion


In normal and aggressive environments composites have a much greater resistance to corrosion. A good example of this is the extensive use of composites in marine and aerospace applications.


3   Increased resistance to repetitive strain


Composites unlike metal can be designed to have extensive deformation without taking a permanent set eg it doesn't stretch like aluminium. Composites have an ability to see repetitive strain over significant time hence their use in aerospace wings and other important components.


4   Low coefficient of thermal expansion (CTE)


Depending on the fibres we use this can vary but it is significantly less than that of metals, carbon being the best at close to zero. A good example is its extensive use in the field of metrology (invar replacement).


5   X-ray Transparency


Carbon fibre is x-ray transparent and this can be of significant importance in many markets but especially medical equipment.


This is not an exhaustive list but if you need some or all of these properties,
contact us so we can help you find a solution.