What is TP1/C12000 copper?
C12000 copper, also known as oxygen-free copper, is a high-purity representative of the copper alloy family. Its copper content is over 99.95%, and the total impurities are strictly controlled to within 0.05%, mainly consisting of trace elements such as oxygen, sulfur, and phosphorus. This near-pure chemical composition endows C12000 copper with excellent physical and chemical properties.
In terms of performance, C12000 copper exhibits extremely high electrical and thermal conductivity, making it an ideal choice for power transmission and heat exchange. Its electrical conductivity is close to the theoretical limit, effectively reducing energy loss; simultaneously, its excellent thermal conductivity ensures rapid heat transfer, making it suitable for applications requiring efficient heat dissipation. Furthermore, this material possesses good machinability and weldability, easily formed through cold and hot working processes, meeting the manufacturing needs of complex structural components. Strong corrosion resistance is also a significant feature, maintaining long-term stability in various environments and extending its service life.
DLPC12000 is widely used in:
Heat Exchangers and Refrigeration & Air Conditioning:
Condenser tubes in thermal power plants (a core application).
Heat exchanger tubes and condenser tubes in shipbuilding, chemical, and petroleum industries.
Copper tubes for evaporators and condensers in central air conditioning and chiller units.
Collector tubes and heat transfer tubes for solar water heaters.
Water Piping and Gas Systems:
Pipelines, fittings, and valve bodies (compliant with hygiene standards) for building hot and cold water supply and drinking water systems.
Pipelines for domestic gas and liquefied petroleum gas (LPG) (must comply with regulations).
Building and Decoration:
Rain gutters and downpipe systems for roofs and curtain walls.
Decorative components and hardware for building structures.
Faucet bodies and shower hoses (often electroplated) for high-end bathroom fixtures.
Industrial Piping and Containers:
Process piping, tank linings, and distillation equipment for the food, beverage, brewing, and pharmaceutical industries (requiring cleanliness and corrosion resistance).
Corrosion-resistant piping and fittings for chemical and marine engineering (for specific media).
Electrical and Electronic Engineering:
Electrical connectors, terminals, and busbars (not for ultra-high conductivity applications) requiring a certain level of conductivity and good weldability.
Heat sinks and heat pipes for electronic equipment (utilizing thermal conductivity).
Grounding devices.
Chemical Composition
|
Component |
Cu+Ag |
Pb |
Sb |
Bi |
P |
Fe |
S |
Other Impurities |
|
Content (%) |
≥99.90 |
≤0.005 |
≤0.002 |
≤0.001 |
0.005-0.012 |
≤0.005 |
≤0.005 |
≤0.05 |
Physical Properties
|
Property |
Value |
|
Density |
8.9 g/cm³ |
|
Conductivity |
90-93% IACS |
|
Thermal Conductivity |
350 W/(m·K) |
|
Thermal Expansion Coefficient |
17.7×10⁻⁶/K |
|
Elastic Modulus |
132 GPa |
|
Melting Point |
1083°C |
Mechanical Properties
|
State |
Tensile Strength (MPa) |
Elongation (%) |
Vickers Hardness (HV) |
|
Hard (Y) |
≥275 |
≥5 |
80-110 |
|
Annealed (M) |
≥200 |
≥40 |
50-70 |
FAQ
| What's the difference between C11000 (ETP) and C12000 (DHP)? C11000 (ETP – Electrolytic Tough Pitch) contains oxygen and may suffer from hydrogen embrittlement in reducing atmospheres. C12000 is deoxidized with phosphorus, making it suitable for brazing, welding, and high-temperature applications without embrittlement risk. |
| Can C12000 copper be welded or brazed easily? Yes, C12000 is highly weldable and brazeable due to its deoxidized nature. Autogenous welding and brazing can be performed without flux when joining copper-to-copper. |
| What are the main applications of C12000 copper tubes? It's widely used in HVAC/R (heat exchangers, condensers), plumbing, medical gas systems, industrial fluid lines, and electrical busbars. |
| 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. |
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Our product range
| Category | Key Products | Standards | Typical Applications |
|---|---|---|---|
| Copper Tubes & Pipes | Seamless copper tubes, medical gas pipes (ASTM B819), ACR tubes, capillary tubes, large-diameter pipes, plumbing tubes (Type K/L/M) | ASTM B68, B75, B88, B280, B819, EN1057 | HVAC, refrigeration, plumbing, medical gas systems, industrial pipelines |
| Copper Sheets & Plates | Pure copper sheets, copper alloy plates (brass, bronze), perforated sheets, embossed sheets, clad sheets | ASTM B152, B465, EN1652 | Architectural cladding, electrical components, heat exchangers, decorative arts |
| Copper Bars & Rods | Round bars, square bars, hexagonal bars, flat bars, copper alloy rods (brass, bronze) | ASTM B187, B301, EN12163/12164 | Machined parts, connectors, fasteners, electrodes, forgings |
| Copper Wires & Strands | Bare copper wires, tinned copper wires, braided wires, stranded conductors, enameled wires | ASTM B1, B3, B174, IEC 60228 | Electrical wiring, power transmission, cables, windings, grounding systems |
| Copper Foils | Rolled copper foils, electrolytic copper foils, flexible copper strips | ASTM B370, IPC-4562 | Printed circuit boards (PCBs), electromagnetic shielding, batteries, decorative laminates |
Our factory
Our factory is equipped with state-of-the-art production lines for extrusion, rolling, drawing, and finishing. We specialize in producing a full range of copper and copper alloy products, including tubes, plates, bars, wires, and foils, serving the global HVAC, construction, electrical, medical, and automotive industries.
We are committed to quality and precision, strictly adhering to international standards including ASTM, EN, DIN, and JIS, and maintaining ISO 9001 certification. Our in-house laboratories conduct rigorous testing-from chemical composition and mechanical properties to pressure and cleanliness verification-ensuring end-to-end traceability and compliance for our products.
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