5-Metal Equal Mass Cylinders Set, Lead-Free (Zinc, Copper, Aluminum, Tin, Brass)

This five-piece equal mass metal cylinder set includes zinc, copper, aluminum, tin, and brass specimens. Each cylinder has a 0.5-inch (12.5 mm) diameter and an equal mass of 30 g, with densities ranging from 2.7 g/cm³ to 8.8 g/cm³. This wide range of density values provides a robust dataset for studying the relationship between density, mass, and volume. The set is accompanied by a complete instruction manual covering background on density, mass, specific gravity, and specific heat, along with inquiry-based student activities and capture sheets. The cylinders can be used for density investigation, specific gravity experiments, and specific heat explorations across multiple grade levels. Due to the nature of raw metals, some oxidation or corrosion from humidity and storage may occur; simply scuff any oxidation off to restore appearance. These density metals are designed for educational use and are not fabricated using ultra-high-precision machining. Expect tolerances in the ±5% range of stated dimensions.