Brass Rod:
Brass rods are a type of non-ferrous metal processing bar, featuring good machinability and high electrical conductivity. They are mainly categorized into brass rods (copper-zinc alloy, relatively cheaper) and copper rods (higher copper content).
Brass rods are bar-shaped objects made from an alloy of copper and zinc, named for their yellow color. Brass with a copper content of 56% to 68% has a melting point of 934–967°C. Brass exhibits excellent mechanical properties and wear resistance, making it suitable for manufacturing precision instruments, ship components, etc.
Different zinc content results in varying colors; for instance, 18%–20% zinc content yields a reddish-yellow hue, while 20%–30% zinc content produces a brownish-yellow shade. Additionally, brass produces a unique sound when struck, which is why Eastern instruments such as gongs, cymbals, bells, and horns, as well as Western brass instruments, are made from brass.
Brass is an alloy of copper and zinc. Simple brass is a binary alloy of copper and zinc, known as simple brass or common brass. Adjusting the zinc content in brass can yield different mechanical properties. Higher zinc content in brass increases its strength but slightly reduces plasticity. Industrially used brass typically contains no more than 45% zinc, as higher zinc content can cause brittleness and degrade the alloy's performance. To enhance specific properties of brass, other alloying elements are added to the binary brass, resulting in special brass. Common alloying elements include silicon, aluminum, tin, lead, manganese, iron, and nickel. Adding aluminum to brass improves its yield strength and corrosion resistance while slightly reducing plasticity. Brass with less than 4% aluminum offers good comprehensive properties such as machinability and castability. Adding 1% tin to brass significantly enhances its resistance to seawater and marine atmospheric corrosion, hence the term "naval brass." Tin also improves the machinability of brass. The primary purpose of adding lead to brass is to enhance machinability and wear resistance, with lead having little effect on the strength of brass. Manganese brass exhibits excellent mechanical properties, thermal stability, and corrosion resistance. Adding aluminum to manganese brass further improves its properties, resulting in castings with a smooth surface. Brass can be divided into two categories: cast products and pressure-processed products.