The primary constituents of C21000 brass are copper (Cu) and zinc (Zn), with the copper content ranging between 94.0% and 96.0%, and zinc constituting the remainder. It also contains trace elements such as iron (Fe <= 0.05%), lead (Pb <= 0.05%), and nickel (Ni=0.5%), with the total impurity content not exceeding 0.3%. This compositional design enables C21000 brass to maintain relatively high strength while also possessing good electrical/thermal conductivity and corrosion resistance.
Approximately 8.86 g/cm³.
>=54% IACS (International Annealed Copper Standard), with a conductivity reaching up to 31.32 MS/m.
234 W/(m·K), demonstrating excellent thermal performance.
18.0 × 10⁻⁶ /K.
115 GPa.
>=205 MPa (some sources indicate >=215 MPa or >=275 MPa, which may be related to the specific temper or testing conditions).
>=35% (some sources indicate >=30% or >=45%, again possibly related to the specific temper or testing conditions).
<=90 (for condition M).
Conducted at temperatures between 540℃ and 600℃ to enhance plasticity and toughness.
Conducted at temperatures between 775℃ and 850℃ to improve strength and hardness.
Due to its excellent properties, C21000 brass is widely used in various industrial fields:
Used in the manufacture of electrical wires, cables, and electrical connectors. Its high conductivity ensures efficient current transmission.
Used in the manufacture of heat sinks and heat exchangers. Its high thermal conductivity facilitates rapid heat transfer and dissipation.
Used in the manufacture of various fasteners and decorative components. Its high strength and wear resistance ensure the long-term stable operation of these parts.
Used in the manufacture of water pipes, heating pipes, and decorative materials. Its corrosion resistance and aesthetic appeal allow these components to maintain good performance and appearance in harsh environments.
Due to its good corrosion resistance, making it less susceptible to seawater erosion and oxidation, C21000 brass finds extensive applications in fields such as submarine cables, marine electrical equipment, and heat exchangers.
C21000 vs. C22000
| C21000 (Gilding Metal) | C22000 (Commercial Bronze) | ||
|---|---|---|---|
| ~95% Cu, ~5% Zn | ~90% Cu, ~10% Zn | C22000 has slightly lower copper content. | |
| Red-gold | Medium gold, slightly less red than C21000 | Colors are similar; C21000 is slightly redder. | |
| The differences are subtle; both are highly ductile. | |||
| Both have good conductivity; C21000 is marginally better. | |||
| Uses overlap significantly. C22000 is a common "architectural bronze." | |||
| Cost difference is usually minor. |
Choose C21000 for applications demanding the absolute highest formability or the warmest red-gold hue.
Choose C22000 when a slightly harder, more economical alternative is acceptable for general architectural or decorative applications where the color difference is negligible.
Our supply scope covers a comprehensive range of high-performance copper and copper alloy products tailored to diverse industrial applications. We provide precision-engineered copper tubes for HVAC and refrigeration systems, sheets and plates for architectural cladding and electrical components, rods and bars for machining and fabrication, wires for conductive and mechanical purposes, as well as strips and foils for electronic and automotive industries. All products are available in various alloys - including pure copper, brass, bronze, phosphor bronze, copper-nickel, and specialty alloys - and can be supplied in standard sizes or customized dimensions, tempers, and finishes to meet your exact specifications.
