The Defective Alloy is what you get from Melting Furnace when you miss to achieve a correct alloy composition. This voxel has no other use than decorative purpose. It cannot be recycled in any way, so what you used to make it is definitely lost.
You can collect it using any constructor/destructor.
Active Voxel : No
Physical Form : Solid
Interface(s) : None
VoxelType : 116