C10100 Oxygen Free Electronic (OFE) Copper Wire
When your project demands zero failure, standard copper isn't enough. C10100 (ASTM B170 Grade 1) represents the absolute ceiling of copper purity. While standard Oxygen-Free (OF) copper (C10200) is 99.95% pure, our C10100 OFE wire reaches a minimum of 99.99% purity, with oxygen levels strictly throttled below 5 parts per million (ppm).
Why does this matter?
The removal of silver (Ag), arsenic (As), bismuth (Bi), and antimony (Sb) to trace levels ensures that the copper lattice remains undisturbed. This results in the highest predictable electrical and thermal conductivity of any commercial copper grade.
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Why C10100 (OFE) Wire?
I. Absolute Immunity to Hydrogen Embrittlement
In high-temperature brazing or vacuum sealing, ETP copper (C11000) reacts with hydrogen to form internal steam pockets, causing catastrophic micro-cracking. Our C10100 is certified Oxygen-Free, making it the only choice for components that must undergo high-temperature processing or welding without losing structural integrity.
II. Vacuum Integrity & Low Outgassing
For aerospace and semiconductor applications, volatile impurities are the enemy. Our C10100 wire undergoes a high-vacuum refining process that eliminates elements with high vapor pressures. This ensures that in ultra-high vacuum (UHV) environments, your equipment maintains its vacuum level without contamination.
III. The "Diode-Free" Signal Path for High-End Audio
In the world of Audiophiles, C10100 is revered as the gold standard. Standard copper contains Cuprous Oxide (Cu₂O) at the grain boundaries, which acts as a microscopic semiconductor-often referred to as the "diode effect." By eliminating oxygen, we ensure a pure metal-to-metal grain contact. This results in zero signal coloration, ultra-low distortion, and a noise floor that satisfies the most demanding acoustic engineering.
Comprehensive Material Specifications
| Trace Element | Maximum Limit (ppm) | Our Typical Value |
| Oxygen (O) | 5 ppm | < 2 ppm |
| Phosphorus (P) | 3 ppm | < 1 ppm |
| Sulfur (S) | 15 ppm | < 8 ppm |
| Zinc (Zn) | 1 ppm | < 0.5 ppm |
| Conductivity | 101% IACS | 101.5% - 102% IACS |
Mechanical Capabilities:
Diameter Range: 0.015mm (Ultra-fine) to 12mm (Rod).
Tolerances: Up to +/- 0.001mm (Specialized for precision winding).
Tempers: Soft Annealed (ideal for complex routing) to Full Hard (for structural lead wires).
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Applications of C10100 Copper
1. Aerospace & Satellite Systems
Used in ion thrusters, satellite bus wiring, and microwave tubes where thermal management and vacuum stability are mission-critical.
2. Semiconductor Lead Frames & Bonding
The extreme ductility of our C10100 allows for ultra-fine drawing and high-speed bonding without work-hardening cracks.
3. Medical Imaging (MRI & CT)
Used in high-field superconducting magnets and gradient coils where magnetic permeability and electrical efficiency directly impact image resolution.
4. High-Fidelity Audio & Video
The preferred conductor for premium speaker cables, interconnects, and internal rewiring of high-end amplifiers.
Our Craftsmanship
We don't just "draw" wire; we engineer its surface.
Oxygen-Free Melting: Raw cathode copper is melted in a carbon-protected, reducing atmosphere to prevent any oxygen uptake.
Diamond Die Drawing: We use natural and polycrystalline diamond dies to ensure a mirror-like surface finish, reducing "skin effect" losses in high-frequency applications.
In-Line Annealing: Precisely controlled vacuum annealing ensures uniform elongation and prevents surface oxidation, delivering a "bright" finish every time.
FAQ
Q: Why is C10100 more expensive than C10200?
A: C10100 (Grade 1) requires more intensive refining and stricter trace element monitoring (17 controlled elements vs. only oxygen in C10200). It is the "surgical grade" of copper.
Q: Can you provide customized elongation for automatic winding machines?
A: Yes. We can customize the "Soft" temper to a specific elongation range (e.g., 30-35%) to ensure your machines run at maximum SPM without wire breakage.
Q: Do you support small-batch prototype orders?
A: We understand R&D needs. While our standard MOQ is 50kg, we support smaller trial orders for aerospace and medical prototyping.
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