America Makes and the National Center for Defense Manufacturing and Machining (NCDMM) have announced the winning teams for the Additive Metal Interchangeability Maturation Initiative (MIAMI), with total funding of $12.4 million from the Office of the Under Secretary of Defense for Acquisition and Sustainment's OSW WIRE. Two teams, led by Northrop Grumman and Fastech respectively, will validate whether metal additive manufacturing materials can reliably replace conventional alloys in Department of War weapons system components. The Northrop Grumman team includes Georgia Tech and Contextualize; the Fastech team includes Pacific Engineering, Auburn University's National Center for Additive Manufacturing Excellence (NCAME), Texas A&M University, Prime Tech Data Management, AML3D, and Westmoreland Mechanical Testing & Research. Each team will select candidate components, establish performance requirements, and generate validation data demonstrating that additive materials meet or exceed the critical performance of the conventional alloys they replace. The project aims to accelerate qualification of additive metals in the defense industrial base through shared, validated data, reducing redundant testing. Together with Delta Qual 2.0 ($9M) and JAQS-SQ ($10.5M), America Makes and NCDMM have invested nearly $32 million in defense additive qualification programs in 2026. Value for powder buyers: ① Qualification of metal additive materials for weapons systems will directly expand defense demand for aerospace-grade titanium and nickel-based superalloy powders, with multi-laser LPBF batch applications favoring mature powder grades; ② Publicly shared validation data is expected to lower certification barriers for powder suppliers entering the defense supply chain; ③ Recommend tracking the material grades of candidate components from the Northrop Grumman and Fastech teams to plan corresponding powder capacity in advance.