Nine brass objects—seven hairpins and two ear spoons—from the collection of Zhuozhou Museum were analyzed using metallographic microscopy, scanning electron microscopy-energy dispersive spectrometry (SEM-EDS), and inductively coupled plasma-mass spectrometry (ICP-MS). The analysis revealed that the objects were primarily composed of copper-zinc alloy with few impurities, and the zinc content ranged from 16% to 31%. All the nine samples were identified as α single-phase brass. Three were cast, while six underwent heat treatment after casting. The samples from the Qing Dynasty contained trace amounts of nickel and iron, likely due to the use of low-grade sulfide copper ores. There was no direct correlation between brass-refining techniques and the manufacturing processes of the objects. Notably, the brass hairpin from the Eastern Han Dynasty was the first mineral-refined brass product identified to date among Han Dynasty metalware.