A device comprises a metal plate (4) and an element (2) for supporting the plate (4), wherein a portion (5) of the plate (4) is wrapped around the supporting element (2), wherein the plate (4) is coated with a sol-gel coating having a thickness which is in a range of 25 to 60 micrometers. In a manufacturing process of the device, the metal plate (4) is attached to the supporting element (2) by subjecting at least a portion (5) of the plate (4) to a process of mechanical deformation, wherein the sol-gel coating is applied to the plate (4) prior to attaching the plate (4) to the supporting element (2). Tests have proven that it is possible to have both the relatively thick coating and the mechanical deformation of at least a portion (5) of the plate (4) to which the coating is applied, without the formation of cracks in the coating.