Abstract: The invention is concerned with an ingot casting mould closed at both its ends and comprising a first section the bottom wall of which is provided with a refractory layer, intended to receive a molten metal stream, a second section having an inclined bottom rising progressively from the adjacent edge of this layer and a third section having a flat bottom connected to the upper edge of the inclined bottom of said second section. This ingot casting mould is particularly suitable for the casting of materials such as ferromanganese which are highly corrosive with respect to cast iron.