A Guide to High Tensile Wire

High tensile wire, known for the strength, utility and the savings it can give you, is one of the most versatile materials you can use. Its composition gives it tremendous strength, so it is capable of holding up many kinds of fencing, even over long distances. It can serve numerous purposes for decking and overall home construction, landscaping and gardening. And, it requires little to no maintenance.


Familiar to agricultural workers and various property owners, high tensile wire is known to take plenty of wear and tear and return to its original condition. If strung for wire and post fencing, it can take a tree falling on it, yet return to its original strength without being stretched. Hence, it’s often used for perimeter fencing alongside forested areas.

Galvanised rust-resistant high tensile wire is much stronger and longer lasting than soft line wire, yet it cannot be bent and manipulated as the latter can. It can lose strength if kinked, so try to avoid doing this. It’s best to wear safety glasses and gloves when handling high tensile wire, as this type of wire can be springy when let loose after being tensioned.

Chain Link Fencing

Chain link fencing is supported by high tensile wire, with 2-3 straining wires tensioned to hold up the fencing. Chain link runs are always straight, with straining posts placed up to 69m apart. This is because curves will not take the taut pressure of the strained wire, posts will be pulled out of vertical alignment and the fence will go slack. The straining wires can be attached to fence posts of any composition.


If you previously used standard low carbon steel wire, with its 0.06-0.08% carbon content, you can use a smaller gauge high tensile wire instead. It’s lighter and contains less steel, yet is as strong or stronger than low carbon steel wire, with around 0.28% carbon. Less steel means you save money, and less weight saves you installation time and effort. As high tensile fence is lighter, it requires fewer posts and they can be spaced further apart. Again, you save money.

High tensile wire fencing requires little or no maintenance. Since it won’t stretch or sag like low carbon wire or light galvanised wire might, your fence lasts longer, you save more money. High tensile wire is ideal for horticultural trellising, as it can hold up a higher crop load without stretching or breaking.

Our Range

AVS Fencing Supplies, the UK’s fencing, decking and landscaping specialists, sell premium high tensile wire in 25kg rolls of roughly 410m lengths, in 2.5 and 3.15 gauge thickness's. It comes with their rolls of chain link fencing, and can be bought separately to hold up their superb AVS Sheep Fencing, of which the C8/80/15 product is quite popular for being soft on fingers. For virtually all uses with high tensile wire, you’ll need tensioning tools and strainers like the popular Barrel Strainer BZP.

Other uses range into decking as well as interior and exterior decorating. High tensile wire can function as the lower cross struts of railings, for a clean, handsome look.


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