Ingot mould for quenching metals and ingots thus obtained

Metal ingot mould (1) designed for manufacture of an ingot (11) by cooling and solidification of a mass of liquid metal (10), comprising a wall (2) and an opening (3), the said wall (2) defining a bottom (4) and an inside surface (5) of which a part S, called the cooling surface, can dissipate all or some of the heat energy released by the metal mass (10) during cooling and solidification, the said wall (2) comprising at least one shape element (6, 7, 8) that will form at least one interlocking element, one stacking element or one handling element on the ingot (11), and characterised in that the cooling surface S comprises at least one plane surface element Si forming all or part of the bottom (4) of the ingot mould (1), in that there is at least one point C on a plane Pi tangent to the, or to each, surface element Si such that all straight line segments D connecting any point R on the cooling surface S to point C pass only inside the ingot mould (1), and in that the total surface area of the surface element or elements Si is equal to at least 10% of the cooling surface area S.