Annealed C12000 Copper Sheet
What Is Annealed C12000 Copper?
C12000 copper plate itself has high strength, high electrical conductivity, high thermal conductivity, as well as excellent corrosion resistance and good machinability. After annealing treatment, the properties of C12000 copper sheet may be further enhanced, such as improving ductility and toughness, and reducing hardness to make it easier to machine and form. At the same time, the annealing treatment may also optimize its electrical conductivity, ensuring the quality and efficiency of signal transmission.
Why Choose Annealed C12000 Over Other Copper Grades?
| Grade | Type | Key Feature | Best For |
|---|---|---|---|
| C12000 (Annealed) | Phosphorus-Deoxidized | Soft, ductile, weldable | Forming, bending, flaring |
| C11000 (ETP) | Electrolytic Tough Pitch | High conductivity | Busbars, electrical parts |
| C10100 (OFE) | Oxygen-Free Electronic | Ultra-high purity | Semiconductors, vacuum |
| C12200 (DHP) | Phosphorus-Deoxidized | Similar to C12000 | Plumbing, HVAC |
Key advantages of annealed C12000:
Superior formability – Easily bent, flared, or shaped
Excellent weldability – No hydrogen embrittlement risk
Good conductivity – ~85–98% IACS
Cost-effective – More affordable than OFE grades
Professional C12000 Returned Copper Sheet Supplier--GNEE

| Elements | ||
|---|---|---|
| Cu(1,2,3) | O | |
| (1) Cu is determined by the difference between the impurity total and 100%. (2) This is a high conductivity copper which has, in the annealed condition a minimum conductivity of 100% IACS except for Alloy C10100 which has a minimum conductivity of 101% IACS. (3) Cu value includes Ag. |
||
| Min (%) | 99.95 | |
| Max (%) | 0.0010 | |
| Technique | Suitability |
|---|---|
| Soldering | Excellent |
| Brazing | Excellent |
| Oxyacetylene Welding | Fair |
| Gas Shielded Arc Welding | Good |
| Coated Metal Arc Welding | Not Recommended |
| Spot Weld | Not Recommended |
| Seam Weld | Not Recommended |
| Butt Weld | Good |
| Capacity for Being Cold Worked | Excellent |
| Capacity for Being Hot Formed | Excellent |
| Forgeability Rating | 65 |
| Machinability Rating | 20 |
C12000 annealed copper sheet has a wide range of applications in electrical, automotive, aerospace, and electronics fields. Its excellent electrical and thermal conductivity makes it particularly suitable for making electrical products such as cables, wires, and radiators, while its high strength and corrosion resistance make it suitable for automotive and aerospace components.
FAQ
Q: What does "annealed" mean?
A: Annealing is a heat treatment process that softens the copper, making it more ductile and easier to form. Annealed C12000 is supplied in the softest possible condition.
Q: Can annealed C12000 be welded?
A: Yes! C12000 is phosphorus-deoxidized copper, specifically designed to resist hydrogen embrittlement during welding and brazing.
Q: What is the difference between C12000 and C11000?
A: C11000 (ETP copper) contains oxygen and can suffer from hydrogen embrittlement if welded. C12000 is deoxidized with phosphorus, making it weldable but with slightly lower conductivity.
Q: Does annealed copper harden over time?
A: At room temperature, no. However, if you bend or work the copper (cold working), it will work-harden. It can be re-annealed if further forming is needed.
Packaging of C12000 pure copper sheet
To preserve the soft temper and surface finish, we use careful packaging methods:
Interleaving with protective paper or film between sheets
Edge protection to prevent damage
Moisture-proof wrapping for export
Wooden crates or pallets for secure transport


Supply C12000 industrial copper sheet with excellent performance

GNEE was established in 2008 with 16 years of manufacturing and sales experience. With many years of production experience and independent production factories, we can provide you with customized products. Meanwhile, we cooperate with many famous factories, which can provide you with large quantities of high quality metal. We have up to 200 employees and will continue to grow in the future. All of them are committed to providing you with better products and services. We are committed to providing you with the best products and services, and we will provide you with more favorable pricing and safe and fast transportation solutions.GENN is trustworthy. We look forward to working with you.
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