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Alloy101 Oxygen Free Copper
Oxygen-free copper known as OFC, Cu-OF, Cu-OFE, or oxygen-free high-conductivity copper (OFHC）is produced by melting copper and treating it with carbon and carbonaceous gases. Through an electrolytic refining process, most of the oxygen is removed, resulting in a material composed of 99.95–99.99% copper with oxygen content no higher than 0.0005%. The exceptional purity of oxygen-free copper significantly enhances key properties commonly associated with standard copper, such as thermal and electrical conductivity, ductility, impact strength, and machinability. Owing to these advantageous characteristics, the material is widely utilized across various industrial applications.
Description
Alloy 101, also known as Oxygen-Free High-Conductivity (OFHC) Copper or OFE Copper, is refined in a specialized oxygen-free environment to achieve a purity of 99.99%. This highly purified copper offers exceptional electrical and thermal conductivity, along with a wide range of beneficial properties, including high conductivity, superior thermal performance, non-magnetic characteristics, corrosion resistance, durability, and antimicrobial qualities.
Alloy 101 Oxygen-Free Copper is available in a diverse selection of forms and shapes, including plates, rods, sheets, strips, and tubes.
Physical Properties
|
Density(g/cm3) |
8.9 |
|
Electrical conductivity IACS%(20℃) |
101 |
|
Modulus of elasticity(KN/mm2) |
118 |
|
Thermal conductivity{W/(m*K)} |
391 |
|
Coefficient of thermal expansion |
17.7 |
|
Temper |
Tensile Strength |
Elongation A50 |
Hardness |
|
(Rm,Mpa) |
% |
HV |
|
|
0 |
195min |
35min |
60max |
|
1/4H |
215-255 |
25min |
55-100 |
|
1/2H |
255-315 |
15min |
75-120 |
|
H |
290min |
5min |
80 |
General Grade and Chemical Composition
Oxygen-free copper materials are classified based on the extent of oxygen removal from the base copper. The two primary grades are:
- Cu-OF (C10200) grade copper achieves a purity of up to 99.95%. This grade demonstrates exceptional purity. While no copper can be entirely 100% pure, modern refining technology has enabled the reduction of residual oxygen content to a practical range of 0.001–0.003%.
- Cu-OFE (C10100) grade copper attains a purity of up to 99.99%. It is purer than Cu-OF and exhibits approximately 1% higher electrical conductivity along with superior corrosion resistance. As a result, this grade is often employed in high-quality audio/visual systems.
Both above grades of oxygen-free copper are available in a wide variety of forms and shapes such as :Plate,Rod,Sheet,Strip,Tube.
Comparison with Similar Copper Alloys
| Alloy Designation | Common Name | Typical Purity | Key Distinction & Typical Use |
|---|---|---|---|
| C10100 | Oxygen-Free Electronic (OFE) | 99.99%+ | Highest conductivity, guaranteed immunity to hydrogen disease. For the most demanding electronic, high-frequency, and vacuum applications. Highest cost. |
| C10200 | Oxygen-Free (OF) | 99.95%+ | Slightly higher oxygen than C10100, but still immune to hydrogen disease. Slightly lower conductivity (~100% IACS). A cost-effective choice for many high-end applications. |
| C11000 | Electrolytic Tough Pitch (ETP) | 99.90%+ | Contains oxygen (~0.04%), susceptible to hydrogen embrittlement. Conductivity ~101% IACS, but cannot be heated in reducing atmospheres. Most common and economical; used for general wiring, busbars, etc. |
Processing & Handling Notes
- Annealing: Can be performed in reducing, inert, or vacuum atmospheres to restore ductility.
- Cleaning: Must be thoroughly cleaned of oils and contaminants before processing, especially for vacuum or plating applications.
- Storage: Should be stored in a clean, dry environment to prevent surface oxidation or contamination.
Production
Oxygen-free copper (OFC) is produced through an intensive manufacturing and refining process, which involves melting copper and introducing gases into the final composition. To prevent internal deformation and crack formation, manufacturers may incorporate heat treatments into the production process to relieve stress. If the OFC does not soften during heat treatment, the manufacturer must perform additional annealing (tempering) operations on the material to enhance its strength.
Test Equipment
Applications
The following outlines the primary application areas of Oxygen-Free Copper (OFC), categorized by industry and their key uses
- Electronics & Electrical Engineering
- High-Power & Energy Technologies
- Audio & High-End Audiovisual Systems
- Aerospace & Precision Manufacturing
- Industrial & Specialized Equipment
- Emerging Technology Fields
FAQ
Q:What information should i confirm you when i send inquiry
A:Sometimes we need product specification like material standard or Grade, size, Qty, shipping port, Terms like FOB or CIF etc.
Q: How long of the delivery time?
A: Usually, the shipment can be delivery within 15-30days after the order confirmed.
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A: LC, T/T, PayPal, Western Union etc.
Q: Which country have you exported to?
A: Our main market is South America, Middle East, Africa and Europe. And have built long time relationship with Pakistan, US, Norway, Germany, Korea, Russia,Taiwan customers.And got continue orders from them every month.
Q: Can i visit your factory?
A: Sure! Welcome in any time.
Q: How about the MOQ?
A: Normally we dont have MOQ requirement, We always expect more opportunities with you. But for some special material or special size let's communicate the actual status.
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