Copper is incredibly important in many industries like electronics, transportation, manufacturing, and machinery. It’s naturally found in the Earth’s crust in small amounts, usually mixed with other elements like zinc, sulfur, carbon, and oxygen.
Although copper itself isn’t magnetic, it can become magnetic when it’s around other magnetic fields.
A lot of the world’s copper comes from hot, sulfur-rich solutions and volcanic areas. Countries like Chile, Peru, and the United States have significant amounts of copper. Canada, Zambia, Congo, and Australia also produce a lot of copper, which is crucial for their economies.
Copper grades and percentage of purity
| Copper Grades | Percentage of purity | Trade Name |
|---|---|---|
| Grade 1 (A) Copper | 99.9% pure | Electrolytic tough pitch (ETP) copper UNS C11000 |
| Grade 2 (B) Copper | 99% pure | Oxygen-free high-conductivity (OFHC) copper UNS C10100 |
| Grade 3 (C) Copper | 97% pure | High Strength Modified Copper UNS C19400 |
| Grade 4 (D) Copper | 95% pure | – |
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