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beyond anything www.kiswire.com W = load applied in kg L = rope length in mm E = elastic modulus in kg/mm 2 A = circumscribed rope area in mm 2 Extreme strength and excellent ductility KISWIRE is one of the largest and most specialized wire drawers in the world nowadays, featuring the making of wire qualities for high end markets, such as valve springs, and other automotive and aerospace applications. These N2 non rotating wire ropes are made of KISWIRE patented high ductile wires, guaranteeing an incomparable ratio between strength and flexibility, bending fatigue life and abrasion. Length extensions When a rope is loaded, constructional lengthening due to the bedding down of all the component wires in the rope, occurs. The precise lengthening due to constructional stretch is hard to calculate, as it depends on a variety of factors, such as : the type of construction of rope, the load amount, the frequency of loading. For a fact, wire rope with fibre cores lengthen more than those with steel cores, since steel cores perform a better bearing for the strands. As a guidance, we can say that ropes with fibre cores lengthen due to constructional bedding from 0.25% of rope length to 2%, whereas steel core ropes lengthen from 0,125% to 1%. Elastic length extension occurs due to the physical lengthening of steel under load. The more steel in a rope, the higher the lengthening. Elastic lengthening is not permanent. The precise elastic lengthening of a rope depends again on the same factors as given in the above chapter on constructional lengthening. To determine the exact elastic lengthening one would have to carry out sample tests. For approximate figures however, Hook’s formula can be applied. Length extension due to overloading of a rope, more than the yield point of the material, causes permanent exten- sion. Another plastic lengthening of a rope occurs due to wear of wire to wire and strand to strand. Both phenome- non’s demand attention whether the rope can be main- tained or shall be rejected. Kiswire is the largest wire rope producer in the world. Annually, about 140.000 tons of wire rope is delivered, worldwide. For decades, Kiswire is specializing in the development and production of wire rope. Meanwhile, the company has acquired a reputable and leading position in a great variety of markets, in literally all corners of the world. The offshore industry is one is a main market for Kiswire since 25 years, meanwhile. Technical Data Sheet 1 =mm lengthening WL EA