Aluminum alloy for armour cable strip

C - Chemistry – Metallurgy – 22 – C

Patent

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Details

C22C 21/06 (2006.01) C22F 1/047 (2006.01) H01B 7/18 (2006.01) H01B 7/20 (2006.01) H01B 7/22 (2006.01)

Patent

CA 2097352

An improved aluminum alloy armoured cable wrap has been produced which permits the use of less aluminum alloy in the cable wrap thereby achieving lighter construction, while meeting or exceeding strength and flexibility requirements. The armoured cable wrap is made from aluminum alloy strip material formed of an aluminum alloy containing about 2.8-3.5 percent by weight Mg, about 0.25-0.70 percent by weight Mn and about 0.15-0.35 percent by weight Cr. Up to 0.5 percent by weight of Cu may also be added. The strip material is heat treated preferably to an Ultimate Tensile Strength of at least 265 MPa.

Recouvrement pour câble armé en alliage d'aluminium amélioré permettant l'utilisation de moindres quantités d'alliage d'aluminium en vue d'obtenir un câble plus léger satisfaisant ou dépassant les exigences aux chapitres de la résistance et de la flexibilité. Le recouvrement pour câble armé est constitué de bandes en alliage d'aluminium contenant environ 2,8 à 3,5 pour cent en poids de Mg, environ 0,25 à 0,70 pour cent en poids de Mn et environ 0,15 à 0,35 pour cent en poids de Cr. Jusqu'à 0,5 pour cent en poids de Cu peut aussi être ajouté à l'alliage. Le matériau en bande ainsi obtenu est soumis à un traitement thermique qui lui confère une résistance à la traction souhaitée d'au moins 265 Mpa.

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