I am not sure how this works or how it impacts on the DFS. If...

I am not sure how this works or how it impacts on the DFS. If you are going to value-add the production of the alloy, you will need additional plant (and probably labour/ management) plus a logistics budget for the purchase of aluminium and other product. A great idea but seems a lot to take on. JV partner perhaps?

Here is a brief summary of the master alloy which someone is obviously already producing as it is for sale.

Synonyms:AlSc2，Aluminum Scandium 2% Master Alloy，Al-Sc 2% Master Alloy　　

Specification:2wt%Sc，±0.05%　　

Appearance:slivery white metallic ingot　　

Packing:50kg/iron drum　　

Usage:with good properties of light-weight,high-strength(maximum strength of extension ≥700Mpa)，heat resistance,weldability,corrosion resistance,aluminum scandium alloy is widely applied in new generation aerospace craft,aircraft,ships and high-performance aluminum alloy structural material of weaponry .

In civilian areas,aluminum scandium alloy is widely applied in transportation facilities,welding wire,sports equipments (for example baseball bat,softball bat,hockey stick,bicycle frame,etc.),structural material of Airbus A320.

Besides,aluminum scandium alloy is also applied in other areas such as aluminum scandium sheet,welding wire foamed aluminum material,etc.

https://bit.ly/2Lj89gd