Die Cast Aluminum Alloy segmentation by type classifies the alloy grades according to composition and performance characteristics, each contributing distinctively to market size. The most widely used grade, Al‑Si (silicon‑based) alloys, holds approximately 55 % of the market, owing to their superior fluidity, low shrinkage, and excellent surface finish, which suit high‑volume automotive and consumer‑goods casting. Al‑Zn (zinc‑based) alloys capture roughly 20 % of demand, offering higher tensile strength and fatigue resistance for aerospace structural parts. Al‑Mg (magnesium‑based) alloys account for about 15 % of the market, favored in marine and industrial equipment where corrosion resistance is paramount. Emerging Al‑Cu (copper‑based) alloys, representing near 7 % of consumption, provide enhanced hardness for precision components. Minor niche grades, such as Al‑Li (lithium‑based) and Al‑Sc (scandium‑strengthened), together comprise the remaining 3 %, driven by specialized aerospace and high‑performance applications. This type‑based market taxonomy clarifies how alloy selection aligns with performance requirements and overall market dynamics.