Abstract: The present invention relates to a method for producing a Mo-containing master alloy that is radiolucent. In accordance with the present invention, two elements may be used to reduce the density of a Mo-containing master alloy enough to make the master alloy radiolucent, aluminum or titanium. Aluminum is required in the particular titanium alloy in the same weight ratio as Mo and cannot be used to decrease the master alloy density without skewing the ratio. Since the master alloy is being added to a titanium melt, much more titanium can be used to reduce the master alloy density.

Abstract: An additive for use in the desulfurization of molten iron is disclosed. The additive comprises a granular mixture of metallic magnesium, calcium oxide and a small amount of a hydrocarbon-containing material which provides a volatile gas producing component to the mixture. The hydrocarbon-containing material is preferably coal, carbon black, wood flour or a high density polyethylene. The additive is intended to be pneumatically injected into the melt in a stream of nonoxygenated carrier gas.

Abstract: A granular additive alloy designed for addition of calcium to molten steel to obtain maximum calcium effects with minimal additions, especially in steels which cannot tolerate the other elements commonly accompanying calcium additions. An alloy is described which contains a ratio of not more than 2.85:1 nor less than 0.35:1 calcium to aluminum, and can contain other reactive metals such as, but not limited to, rare earths, boron, titanium, and zirconium in amounts up to 40% by weight of the alloy. The preferred embodiment is an alloy with 60% by weight calcium and 40% by weight aluminum. The particles are intended to dissolve in the molten steel and form a boundary layer adjacent their surfaces. The particles are sized such that substantially all of the particle is consumed in the formation of this boundary layer, according to a given relationship based on the concentration of calcium and aluminum in the alloy.