What is the copper bar?
Copper bar is one of the main varieties of copper processing materials. Copper bar is an indispensable conductive material for the manufacture of motor windings, high and low-voltage electrical devices, switch contacts, and wires for power distribution installations. Two metals are currently used as conductors in switchboards: copper and aluminum. In particular, when it is necessary to define the electrical distribution inside the switchboard, people mainly choose to use drawn rods, using the two metals mentioned above. When configuring a power distribution system, it is important to consider some electrical and mechanical parameters such as those listed below: Electrical parameters: The rated strength value is carried according to the cross-section and number of conductors and the resulting voltage loss. Mechanical parameters: Reinforcement size and number, based on panel size and its mechanical resistance.
（Non-Ferrous Metal Red Copper Bar Flat Bar）
What are the advantages of copper bars?
The copper bars are with high mechanical properties, good thermal conductivity, electrical conductivity, excellent corrosion resistance, electroplating properties, brazing properties, beautiful and beautiful metallic luster, and good forming and processing properties.
Large carrying capacity: the surface current density of the copper busbar is evenly distributed, and the highest rated current can reach 12000A.
Good insulation performance: the copper busbar adopts a sealed shielding insulation method, the grounding potential of the shell is zero, the electric field on the surface of the busbar is evenly distributed, and the electrical insulation performance is strong. It can directly pass through the cable trench and the cable interlayer.
High mechanical strength: The allowable stress of the main body of the copper busbar is 4 times that of the rectangular busbar. It can withstand a large short-circuit current and has high mechanical strength so that the maximum supporting span of the busbar can reach 8 meters.
Low loss: The shape of the copper busbar determines that its surface skin effect coefficient is low, Kf≤1, and the AC resistance is small, so the power loss of the busbar is small. The dielectric loss of the insulating layer of the cross-linked shielded insulated busbar is lower than 0.01%.
How to produce copper bars?
The production process of copper bars generally includes the following steps:
Copper Melting: The purified copper material is melted to bring it to a melting point suitable for making copper bars. Melting is usually carried out using an electric furnace or stove, where the copper material is heated to a high temperature so that it melts into liquid copper.
Copper Casting: The molten liquid copper is poured into a casting mold for casting. Casting is the process of injecting liquid copper into a casting pattern and allowing it to cool and solidify into a copper bar. Casting is usually carried out using a continuous casting machine, can be continuous casting.
Copper Processing: The cast copper bars are processed and treated, such as drawing, cutting, surface treatment, etc., to meet the size and accuracy requirements of the products.
Inspection and Packaging: The processed copper bars are inspected for quality, including size, surface, material, and so on. After passing the inspection, packaging is carried out to facilitate transportation and storage.
What is the application of copper bars?
All kinds of power transmission and transformation and electrical equipment made from it have been widely used in the field of electric power. The copper bus bar is an indispensable conductive material for the manufacture of motor windings, high and low-voltage electrical appliances, switch contacts, and wires for power supply and distribution installation. Mainly used in the field of power generation and transmission and distribution, the application range is very wide, such as switchgear, busways, circuit breaker, and other high and low-voltage electrical facilities, as well as wind power, hydropower, nuclear power units and other power generation facilities. In recent years, with the sustained and rapid development of the economy, the output and consumption of copper bus bars have also increased significantly, and the quality requirements for copper wire have also been continuously improved.
（application of copper bars）
The raw materials used by Luoyang Trunnano Tech Co., Ltd to make copper bars include oxygen-free copper rod and copper pole, the grades are C11000, C10200, C10300.
The elemental content of raw materials in each grade is as follows：
| Item | T1 | C11000 | C10200 | C10300 | C12000 | C12200 | |
| Element content | Cu+Ag(≥) | 99.95 | 99.9 | 99.97 | 99.95 | 99.9 | 99.9 |
| P（≤） | 0.001 | 0.002 | 0.002 | 0.004-0.012 | 0.015-0.04 | ||
| Bi（≤） | 0.001 | 0.001 | 0.001 | 0.001 | 0.002 | 0.002 | |
| Sb（≤） | 0.002 | 0.002 | 0.002 | 0.002 | 0.002 | 0.002 | |
| As（≤） | 0.002 | 0.002 | 0.002 | 0.002 | 0.002 | 0.005 | |
| Fe（≤） | 0.005 | 0.005 | 0.004 | 0.004 | 0.01 | 0.05 | |
| Ni（≤） | 0.002 | 0.005 | 0.002 | 0.002 | 0.005 | 0.01 | |
| Pb（≤） | 0.003 | 0.005 | 0.003 | 0.004 | 0.005 | 0.005 | |
| Sn（≤） | 0.002 | 0.002 | 0.002 | 0.002 | 0.002 | 0.01 | |
| S（≤） | 0.005 | 0.005 | 0.004 | 0.004 | 0.005 | 0.005 | |
| Zn（≤） | 0.005 | 0.005 | 0.003 | 0.003 | 0.003 | 0.003 | |
| O（≤） | 0.02 | 0.06 | 0.002 | 0.003 | 0.01 | 0.01 | |
| Item | Characteristic | Fields of application |
| C11000 | It has good electrical conductivity, thermal conductivity, corrosion resistance and processing properties, and can be welded and brazing. Impurities containing reduced electrical and thermal conductivity are small, and trace amounts of oxygen have little effect on electrical conductivity, thermal conductivity and processing properties, but it is easy to cause "hydrogen disease", and it is not easy to process (annealing, welding, etc.) and use in a high temperature (such as 370 °C) reducing atmosphere. | Used in electrical, thermally conductive and corrosion-resistant equipment. Such as: wires, cables, conductive screws, detonators for blasting, chemical evaporators, storage devices and various pipelines |
| C10200、C10300 | It has high purity, excellent electrical and thermal conductivity, no "hydrogen disease" or very little "ammonia disease" (no hydrogen embrittlement), good processing performance and welding, corrosion resistance and cold resistance | It is mainly used as electric vacuum instrumentation devices, various hardware products, lamps, pipe fittings, zippers, plaques, rivets, springs, settlement filters, etc |
| C12000 | Its welding performance and cold bending performance are good, generally no "hydrogen disease" tendency, can be processed and used in a reducing atmosphere, but not suitable for processing and use in an oxidizing atmosphere. The residual phosphorus content of C12000 is less than that of C12200, so its electrical and thermal conductivity is higher than that of C12200. | It is mainly used in pipes, but can also be supplied as plates, strips or rods and wires. Used as gasoline or gas transmission pipes, drain pipes, condensation pipes, mine pipes, condensers, evaporators, heat exchangers, train car parts. |
| C12200 |
Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) is a trusted global chemical material supplier & manufacturer with over 12-year-experience in providing super high-quality chemicals and nanomaterials, including boride powder, nitride powder, graphite powder, sulfide powder, 3D printing powder, etc.
The company has a professional technical department and Quality Supervision Department, a well-equipped laboratory, and equipped with advanced testing equipment and after-sales customer service center.
If you are looking for high-quality Spherical Nb521 Powder please feel free to contact us or click on the needed products to send an inquiry.
Payment Term
T/T, Western Union, Paypal, Credit Card etc.
Shipment Term
By air, by sea, by express, as customers request.
FAQs of copper bars
Q: What is the purity level of your copper bars?
A: The purity level of our copper bars is typically 99.9% (C11000 grade). Higher purity levels, such as 99.95% (C10100 grade), are also available upon request. Purity is crucial for ensuring the electrical conductivity and mechanical properties of the copper bars, making them suitable for various applications, including electrical wiring, plumbing, and industrial machinery.
Q: Can you provide the mechanical properties of the copper bars, such as tensile strength and elongation?
A: Our copper bars have a tensile strength of approximately 220-280 MPa and an elongation of around 30-40%. These properties ensure that the copper bars can withstand significant stress without breaking, making them ideal for applications that require both strength and flexibility. We can provide detailed test reports and material data sheets upon request..
Q: Are your copper bars manufactured to any specific standards or certifications?
A: Yes, our copper bars are manufactured in compliance with international standards such as ASTM B147 and EN 13603. We also hold ISO 9001 certification for quality management systems, ensuring that our production processes meet the highest standards of quality and consistency. This certification guarantees that our products are reliable and consistent in performance.
Q: What is the lead time for delivery, and do you offer just-in-time (JIT) delivery options?
A: The standard lead time for delivery is typically 2-4 weeks, depending on the quantity and current production schedule. We understand the importance of timely delivery in construction and manufacturing projects, so we offer just-in-time (JIT) delivery options to minimize inventory costs and ensure that materials are available when needed. Please let us know your specific requirements, and we will work to accommodate them.
