{"id":4518,"date":"2026-09-23T10:12:50","date_gmt":"2026-09-23T08:12:50","guid":{"rendered":"https:\/\/www.eurosandow.com\/aramid-kevlar-webbing-technical-properties-and-applications\/"},"modified":"2026-09-30T09:56:56","modified_gmt":"2026-09-30T07:56:56","slug":"aramid-kevlar-webbing-technical-properties-and-applications","status":"publish","type":"page","link":"https:\/\/www.eurosandow.com\/en\/aramid-kevlar-webbing-technical-properties-and-applications\/","title":{"rendered":"Aramid (Kevlar\u00ae) webbing: technical properties and applications"},"content":{"rendered":"\n
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Aramid webbing (also known under the brand names Kevlar\u00ae or Twaron\u00ae) is much more than just a simple strip of fabric. Woven or braided from para-aramid fibres, it offers exceptional mechanical performance. <\/p>\n\n\n\n

Extreme resistance to breakage, abrasion and very high temperatures\u2026 all combined with surprising flexibility. <\/p>\n\n\n\n

Please note, however, that whilst aramid excels in demanding environments, it is naturally sensitive to UV rays \u2013 a key factor to bear in mind for your outdoor projects.<\/p>\n\n\n\n

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The technical properties of aramid webbing<\/mark><\/h2>\n\n\n\n

Aramid and Kevlar \u2013 what\u2019s the difference?<\/mark><\/h3>\n\n\n\n

None, in the sense that Kevlar\u00ae is not a distinct material: it is the trade name registered by DuPont for its para-aramid fibre, which has been on the market since 1971. Twaron\u00ae refers to Teijin\u2019s para-aramid, which has similar properties. Nomex\u00ae, which is often confused with it, belongs to the meta-aramid family: it is designed for thermal protection rather than mechanical strength. A Kevlar strap and an aramid strap therefore refer to the same type of product, the latter being the correct technical designation. <\/p>\n\n\n\n

Aramid fibre occurs as continuous filaments, which are naturally golden-yellow in colour. The strength of para-aramid yarn is due to the orientation of its molecules. For the same cross-sectional area, it can bear several times the load of a steel wire, whilst weighing considerably less. <\/p>\n<\/div>\n\n\n\n

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Criteria<\/mark><\/strong><\/td>Level<\/mark><\/strong><\/td><\/tr>
Tensile strength<\/td>Perfectly suited (5\/5)<\/td><\/tr>
Heat resistance<\/td>Perfectly suited (5\/5)<\/td><\/tr>
Abrasion resistance<\/td>Perfectly suited (5\/5)<\/td><\/tr>
Sun exposure (UV)<\/td>Not suitable (1\/5)<\/td><\/tr>
Moisture resistance<\/td>Perfectly suited (5\/5)<\/td><\/tr>
Flexibility (density)<\/td>Perfectly suited (5\/5)<\/td><\/tr>
Buoyancy<\/td>No<\/td><\/tr>
Storage in a damp environment<\/td>Very suitable (4\/5)<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n<\/div>\n\n
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This table can be read at a glance. It meets five out of a maximum of six criteria, and at least one. Aramid is the only fibre in the ranking to achieve full marks for tensile strength, heat resistance, abrasion resistance, moisture resistance and flexibility. Polyethylene performs equally well in terms of tensile strength and abrasion resistance, but falls short on heat resistance. No other material performs well on all three fronts at the same time. <\/p>\n\n\n\n

Aramid\u2019s fire behaviour stands out from that of other materials. Aramid does not burn or melt: it carbonises at around 500 \u00b0C. Whilst polyester and polyamide melt at temperatures between 215 and 260 \u00b0C, aramid webbing retains its structural integrity well beyond these temperatures, without a single drop of molten material. <\/p>\n\n\n\n

The chemical sensitivities identified relate to concentrated mineral acids, strong acids and strong alkalis at high temperatures. Aramid does not float. <\/p>\n\n\n\n

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The advantages of aramid webbing<\/mark><\/h2>\n\n\n
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