Product details table:

Physical and chemical properties:

Physical properties

Appearance:

It usually presents a golden yellow metallic color, with a smooth surface and high gloss. Different surface effects can be obtained through different surface treatment processes, such as polishing, brushing, or coating.

Density:

The density of brass rods is generally between 8.4-8.7 g/cm³, depending on the specific alloy composition. For example, the density of common brass (Cu-Zn alloy) is approximately 8.5 g/cm³, which is higher than that of stainless steel.

Melting point:

The melting point is relatively moderate, generally ranging from 880℃ to 950℃, depending on the specific alloy composition. This allows brass rods to maintain stability in moderately high-temperature environments but not in extremely high-temperature conditions.

Coefficient of thermal expansion:

The coefficient of thermal expansion is moderate. In the range of room temperature to 100℃, the coefficient of thermal expansion of brass is about 20×10⁻⁶/℃. This feature enables it to maintain dimensional stability in environments with moderate temperature changes.

Thermal conductivity:

The thermal conductivity of brass is good, with a thermal conductivity coefficient of approximately 109-125 W/(m·K), which is much higher than that of stainless steel. This makes brass rods suitable for applications requiring efficient heat transfer.

Electrical conductivity:

Brass has good electrical conductivity, though lower than pure copper. The electrical conductivity of brass is typically around 28% of that of pure copper (e.g., Cu-Zn alloys have a conductivity of approximately 15×10⁶ S/m).

Chem

ical properties

Corrosion resistance:

Brass rods exhibit good corrosion resistance in most environments, particularly in atmospheric and freshwater conditions. However, they may suffer from dezincification (the selective leaching of zinc) in certain aggressive environments, such as those containing ammonia or strong acids. Adding elements like tin or arsenic can improve their resistance to dezincification.

Antioxidation:

Brass rods have moderate oxidation resistance at room temperature but may oxidize at higher temperatures. Proper alloying (e.g., adding aluminum or tin) can enhance their resistance to oxidation.

Chemical stability:

In general chemical media, brass rods are stable and do not easily react with common chemicals. However, in highly corrosive environments, such as those containing strong acids, alkalis, or ammonia, their corrosion resistance may be compromised.

Passivation:

Unlike stainless steel, brass does not form a passive film naturally. However, protective coatings or treatments can be applied to improve its corrosion resistance and durability.

Application:

Brass rods are widely used in various fields due to their excellent machinability, corrosion resistance, and aesthetic appeal. In the plumbing industry, they are used to manufacture valves, fittings, and pipes due to their durability and resistance to water corrosion. In the electrical industry, they are used for connectors, terminals, and switches because of their good electrical conductivity. In the field of architecture and decoration, brass rods are often used for railings, handrails, and artistic sculptures due to their beautiful golden appearance. In mechanical manufacturing, they are processed into components such as gears, bushings, and fasteners to ensure smooth operation of equipment. Additionally, in musical instruments, brass rods are indispensable for crafting parts like keys and frames due to their acoustic properties and workability.