Coppertin

Coppertin is a copper-tin alloy, commonly called bronze. It consists primarily of copper with tin as the main alloying element; tin content typically ranges from about 5% to 20% by weight. Additional elements, when present, are usually small amounts intended to adjust strength, hardness, and casting characteristics.

Properties of bronze include greater hardness and wear resistance than pure copper, along with good strength and fatigue resistance. It also offers improved corrosion resistance in many environments and tends to develop a protective patina over time. While still conductive, its electrical conductivity is lower than that of pure copper. Tin helps improve castability and can reduce the risk of work hardening during forming.

Historically, bronze was developed in the Bronze Age and used for tools, weapons, armor, and art. In modern applications, bronze remains valued for bearings, bushings, gears, springs, coins, sculptures, and marine hardware. Bronze alloys vary; phosphor bronze, which contains tin with small amounts of phosphorus, is noted for high wear resistance and fatigue strength, while aluminum bronzes add aluminum for higher strength at elevated temperatures.

Manufacture of coppertin involves melting copper and alloying with tin, then casting or forging the resulting ingot. Various heat treatments and work-hardening processes are used to tailor mechanical properties for specific applications.