China C11000 Pure Copper Suppliers and Factory - High Quality Copper Products
C11000 Pure Copper Introduction
C11000 Pure Copper is a purple red metal, commonly known as "red copper". It is highly malleable. A volume as small as a drop of water can be pulled into filaments up to two kilometers long or rolled into almost transparent foil larger than a bed. The most valuable property of C11000 is that it conducts electricity very well, making it the "leading role" in the electrical industry.
The applications of C11000 are much more extensive than iron; 50% of Cu is purified into pure copper by electrolysis every year for use in the electrical industry. Normally, very small amounts of impurities, such as phosphorus, arsenic, aluminum, etc., will greatly reduce the conductivity of copper. Oxygen in copper (which easily mixes in during copper smelting) also has a great impact on conductivity, so the Cu used in the electrical industry must generally be oxygen-free copper. In addition, lead, antimony, bismuth, and other impurities will prevent the copper crystallization from binding together, resulting in hot brittleness, which also affects the processing of C11000.
This kind of high-purity copper is generally refined by electrolysis: using impure copper (coarse copper) as the anode, C11000 as the cathode, and a copper sulfate solution as the electrolyte. When the current passes through, the impure copper on the anode gradually melts, and the pure copper gradually precipitates on the cathode. The purity of copper obtained by such refinement can reach 99.99%.
Copper features excellent electrical conductivity and outstanding plasticity.
Mechanical Properties
| Property | Unit / Condition | Value |
|---|---|---|
| Tensile Strength | Rm Mpa | ≥260 |
| Yield Strength | δ 0.5 Mpa | ≥205 |
| Elongation | % | ≥12 |
| Coefficient of elasticity | Mpa | 127000 |
| Heat conductivity coefficient | W/(m·K) | 375 |
Physical Properties
| Property | Unit / Condition | Value |
|---|---|---|
| Electrical Conductivity | %IACS | ≥95 |
| Hardness | HRB | 35-55 |
Fabrication Properties
| Property | Condition / Value |
|---|---|
| Softening temperature | 350 ℃ |
| Capacity for being cold worked | Excellent |
| Capacity for being hot formed | Excellent |
| Hot working temperature | 750-875 C |
| Annealing temperature | 425-650 C |
| Machinability rating (Free Cutting Brass=100) | 30 |
Frequently Asked Questions (FAQ)
Q: What is C11000 Pure Copper commonly called?
C11000 Pure Copper is a purple-red metal commonly known as "red copper" due to its distinctive color.
Q: Why is purity critical for C11000 copper used in the electrical industry?
Very small amounts of impurities, such as phosphorus, arsenic, aluminum, and oxygen, greatly reduce the electrical conductivity of copper. Therefore, the electrical industry generally requires high-purity, oxygen-free copper.
Q: How is high-purity C11000 copper refined?
It is refined by electrolysis, using impure copper as the anode, C11000 as the cathode, and a copper sulfate solution as the electrolyte. This process achieves a copper purity of up to 99.99%.
Q: What are the mechanical strength limits of C11000?
C11000 has a tensile strength (Rm) of ≥260 MPa, a yield strength (δ 0.5) of ≥205 MPa, and an elongation capacity of ≥12%.
Q: What are the hot working and annealing temperatures for C11000?
The recommended hot working temperature range for C11000 is 750-875 °C, and the annealing temperature range is 425-650 °C.
Q: What is the softening temperature of C11000?
The softening temperature of C11000 Pure Copper is 350 °C.