What is C12000 copper?
Copper C12000 is an alloy made from copper and other alloying elements. It contains up to 12% zinc, tin, nickel, iron, manganese, aluminium, and silicon. This combination creates a high-performance material that is both malleable and strong. Copper C12000 has numerous applications in engineering due to its impressive electrical properties and corrosion resistance. This alloy also provides excellent formability, making it highly desirable for use in components requiring precision machining.
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Chemical Composition
|
Element |
Cu |
P |
Pb |
Fe |
Zn |
Others |
|
Weight % |
≥ 99.9 |
0.004–0.012 |
≤ 0.005 |
≤ 0.005 |
≤ 0.005 |
≤ 0.1 |
Physical Properties
|
Property |
Value |
|
Density (g/cm³) |
8.94 |
|
Melting Point (°C) |
1083 |
|
Electrical Conductivity (%IACS) |
98 – 100 |
|
Thermal Conductivity (W/m·K) |
391 (at 20°C) |
Mechanical Properties
|
Condition |
Tensile Strength (MPa) |
Yield Strength (MPa) |
Elongation (%) |
Hardness (HV) |
|
Annealed |
200 – 250 |
50 – 80 |
45 – 55 |
40 – 60 |
|
Hard |
300 – 350 |
250 – 300 |
10 – 20 |
80 – 100 |
Scope of Application
|
Uses and Applications of Copper |
|
|
Power Industry |
Power transmission such as line cables, transformers, switches, plug components and connectors, etc.; motor manufacturing such as stator, rotor, shaft head and hollow wire, etc.; communication cables and residential electrical lines also need to use a large number of copper wires. |
|
Electronic Industry |
Electric vacuum devices such as high-frequency and ultra-high-frequency emission tubes, catheters, magnetrons, etc., they need high-purity oxygen-free copper and dispersion-strengthened oxygen-free copper. Copper printed circuits require a large amount of copper foil and copper-based brazing material. Integrationin the circuit Copper replaces aluminum in silicon chips for interconnect lines and lead frames. |
|
Energy and Petrochemical Industry |
The main condenser tube plate and condenser tube of the energy industry thermal power plant are made of brass, bronze or cupronickel. Solar heaters are also often manufactured using copper tubing. Petrochemical industry copper and many copper alloys, used in large quantities to manufacture contact corrosion Various media containers, piping systems, filters, pumps and valves, various evaporators, heat exchangers and condensers, etc. |
|
Transportation Industry |
In the shipbuilding industry, copper alloys include aluminum bronze, manganese bronze, aluminum brass, gunmetal (tin zinc bronze), white copper and nickel copper alloy (Monel alloy), etc. are all standard materials for shipbuilding. In warships and merchant ships, copper and copper alloys are generally used as aluminum bronze propeller, Bolts, condenser tubes, rivets, copper coated paint, etc. In the automotive industry, copper and copper alloys are mainly used in radiators, brake system pipelines, hydraulic devices, gears, bearings, power distribution and power systems, brake friction plates, washers and various joints, Accessories and trims, etc. The motors, rectifiers and control, braking, electrical and signal systems on railway trains also rely on copper and copper alloys to work. In addition, the electrification of railways requires a large amount of copper and copper alloys.in the aircraft Copper for wiring, hydraulic, cooling and pneumatic systems, aluminum bronze tubing for bearing retainers and landing gear bearings, and diamagnetic copper alloy for navigation instruments. |
|
Mechanical and Metallurgical Industries |
In addition to a large number of copper used in motors, circuits, hydraulic systems, pneumatic systems and control systems in mechanical engineering, various transmission parts and fixing parts, such as cylinder liners, connectors, fasteners, gears, twisting parts, etc., all Need to reduce wear and lubrication with copper or copper alloy. The key component in continuous casting technology of metallurgical equipment-crystallizer, mostly made of high strength and high thermal conductivity copper alloy such as chromium copper, silver copper, etc., and the vacuum arc furnace and electroslag furnace water-cooled crucible in electrometallurgy are made of copper pipe, and various induction heating The induction coils are all made of copper tubes or special-shaped copper tubes, which are cooled by water. |
|
Light Industry |
Copper and copper alloy can be used in the manufacture of air conditioner heat exchanger, watch movement, paper machine mesh, roller, printing copper plate, fermentation tank lining, distillation pot, building decoration components, etc. |
|
Emerging Industries and High-tech Fields |
Copper is also used in emerging industries and high-tech fields, such as superconducting alloy jackets, ultra-low temperature medium containers and pipelines, rocket engine cooling village, high-energy accelerator magnet windings. |
FAQ
| Does C12000 copper corrode in water systems? It has excellent corrosion resistance in clean, non-aggressive water. However, like all copper, it can be affected by acidic water, high-velocity flow, or certain chemicals (e.g., ammonia, sulfides). |
| Is C12000 suitable for underground water lines? Yes, especially when using Type K thick-walled tubing for burial. Its corrosion resistance and strength make it a durable choice for direct burial when soil conditions are non-aggressive. |
| What standards cover C12000 copper tubes? ASTM B75 (seamless), B280 (ACR tubes), EN 12735-1, and JIS H3300 are key standards for tubing. ASTM B152 covers sheet/plate forms. |
| What tempers are available for C12000 tubing? Common tempers are annealed (soft, O60), drawn (hard, H58), and light-drawn (H55). Annealed offers maximum formability; drawn provides higher strength. |
| Can C12000 be used in oxygen service or medical gas systems? Yes, after proper cleaning and degreasing, C12000 tubes are widely used in medical gas (oxygen, nitrous oxide) and high-purity gas systems due to their cleanliness and non-permeability. |
| How does phosphorus affect conductivity in C12000? The low residual phosphorus slightly reduces electrical conductivity (~85% IACS) compared to pure C11000 (~101% IACS), but it remains excellent for most thermal and electrical applications. |
| Is C12000 susceptible to stress corrosion cracking (SCC)? Copper alloys are generally less prone to SCC than brasses, but in environments with ammonia, amines, or nitrites, SCC can occur. Proper design and avoiding sustained tensile stress in such environments are recommended. |
| What's the maximum continuous service temperature for C12000? Typically up to about 150–200°C (302–392°F) for long-term service. Short-term exposure can go higher, but annealing and softening will occur above ~250°C (482°F). |
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Dimensional Range Table
In plumbing and HVAC standards, copper tubing is commonly classified into three main types based on wall thickness: Type K, Type L, and Type M.
Type K: Has the thickest wall. It is the strongest and most durable, primarily used for underground burial, high-pressure applications, and where the highest level of protection is required.
Type L: Has a medium wall thickness. It is the most common and versatile type, widely used for residential and commercial water supply lines (hot and cold) and for many HVAC applications.
Type M: Has the thinnest wall. It is suitable for above-ground, low-pressure residential water supply lines and some drainage applications, offering a cost-effective solution where conditions allow.
The outside diameter (OD) is the same for all three types within a given nominal size. The difference lies in the inner diameter (ID), which decreases as the wall gets thicker.
| Nominal Size (inches) | Type K | Type L | Type M |
|---|---|---|---|
| Outside Diameter (OD) | Same for all types | ||
| Wall Thickness | Thickest | Medium | Thinnest |
| Inside Diameter (ID) | Smallest | Medium | Largest |
| 1/2" | OD: 0.625" ID: 0.527" Wall: 0.049" |
OD: 0.625" ID: 0.545" Wall: 0.040" |
OD: 0.625" ID: 0.569" Wall: 0.028" |
| 3/4" | OD: 0.875" ID: 0.745" Wall: 0.065" |
OD: 0.875" ID: 0.785" Wall: 0.045" |
OD: 0.875" ID: 0.811" Wall: 0.032" |
| 1" | OD: 1.125" ID: 0.995" Wall: 0.065" |
OD: 1.125" ID: 1.025" Wall: 0.050" |
OD: 1.125" ID: 1.055" Wall: 0.035" |
Our factory
Our factory is built for precision and scale in producing copper rods, tubes, plates, bars, wires, and strips. We operate advanced equipment such as upward continuous casting systems for oxygen-free copper rods, CNC-controlled pilger mills for seamless tubes, and automated strip rolling lines with real-time thickness monitoring. All products are manufactured to meet ASTM, DIN, and customer-specific standards, with process control at every stage. Our quality assurance includes metallographic analysis, conductivity testing, and surface quality inspection via optical comparators. From raw material to finished product, we ensure consistency, performance, and on-time delivery for industrial and OEM partners globally.
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Copper product packaging
Our copper product packaging always prioritizes safety protection and professional identification. Copper rods and profiles are securely bundled with steel straps and fixed on reinforced wooden pallets, with waterproof and moisture-proof film wrapped around the exterior. Copper tubes are equipped with protective caps on both ends and packaged in custom-designed cartons or wooden crates with internal cushioning materials. Copper plates and strips are interleaved with anti-rust paper and fully encapsulated in steel-edged crates. All packages are affixed with clear product labels, specifications, and moisture-proof tags. For high-purity copper materials or those with special application requirements (such as oxygen-free copper wires and high-end copper strips), we also offer professional nitrogen-filled sealed packaging to ensure complete oxygen isolation during transportation and storage, preventing oxidation and maintaining the optimal performance and surface condition of the materials.
