scope:

These Rules are applicable to the wrought aluminium alloys which are described below and which are intended for the fabrication of ships' hulls, superstructures and other ship structures as well as for pipelines. They are not applicable to wrought aluminium alloys which are intended for the manufacture of systems designed to transport liquefied gases at low temperatures.

These Rules are applicable to products made from wrought aluminium alloys having a product thickness of 3 to 50 mm inclusive. Requirements applicable to products having thicknesses outside this range are to be specially agreed with GL.

Alloys and material conditions which differ from the specified requirements given below, but which conform to national standards or the manufacturer's material specifications may be used provided that their properties and suitability for use, and also their weldability have been checked by GL and that GL has approved their use.

Alloy designations and material conditions which are indicated in these Rules comply with the designations of the Aluminium Association.

With regard to the definition of the material conditions EN 515 is applicable.