C10700 Copper Alloy
Standards: ASTM B152, ASTM F68, EN CW008A, JIS C1020, GB/T 5231
Forms: Sheet/Strip/Foil, Rod/Bar, Wire, Tube/Pipe
Surface Finish: Bright, pickled, polished, etc.
Packaging: Standard export wooden crates/pallets with anti-rust materials inside.
Certification: Material Test Certificate (MTC) compliant with EN 10204 3.1 or 3.2 is provided with shipment.
C10700 copper alloy, also known as Oxygen-Free Silver-Bearing Copper, is a premium high-purity material (Cu+Ag ≥99.95%) engineered for environments requiring exceptional electrical conductivity and enhanced resistance to softening.
Unlike standard coppers, C10700 contains a controlled amount of Silver (Ag), which significantly raises its softening temperature without compromising its superior electrical or thermal conductivity. It is the gold standard for components that undergo high-temperature brazing or operate in vacuum environments.
Core Benefits:
- Extreme Conductivity: ≥101% IACS, ideal for precision electrical components.
- High Softening Resistance: Maintains mechanical strength at elevated temperatures better than C11000.
- Hydrogen Embrittlement Immunity: Perfectly suited for vacuum seals and hydrogen-atmosphere brazing.
- Excellent Formability: Easily hot/cold worked, flared, or bent for intricate designs.
Product Specifications
| Item | Specification |
|---|---|
| Product | C10700 Copper Alloy (Oxygen-Free Copper) |
| Grades | CDA 110, OF-Cu, Cu-OFE |
| Standards | ASTM B152, ASTM F68, EN CW008A, JIS C1020, GB/T 5231 |
| Forms | Sheet/Strip/Foil, Rod/Bar, Wire, Tube/Pipe |
| Surface Finish | Bright, pickled, polished, etc. |
| Packaging | Standard export wooden crates/pallets with anti-rust materials inside. |
| Certification | Material Test Certificate (MTC) compliant with EN 10204 3.1 or 3.2 is provided with shipment. |
| Characteristics | Very high purity (≥99.95% Cu), extremely low oxygen content (≤0.0005%), excellent electrical conductivity (≥101% IACS) and thermal conductivity, superior ductility, resistance to hydrogen embrittlement, and cold workability. |
| Applications | High-reliability electrical connectors, vacuum electronic devices, waveguides, RF components, busbars, heat sinks, semiconductor equipment parts, and applications requiring high-temperature brazing or oxygen-free environments. |
2. Technical Specifications & Material Standards
C10700 Chemical Composition (Compliance with ASTM B170 / B152)
| Element | Content (%) | Technical Role |
| Copper (Cu + Ag) | ≥ 99.95% | Ensures maximum conductivity and purity. |
| Silver (Ag) | 0.085% - 0.15% | Raises the softening temperature for high-temp stability. |
| Oxygen (O) | ≤ 0.001% | Eliminates risk of hydrogen embrittlement. |
| Total Impurities | ≤ 0.05% | Maintains consistent material reliability. |
C10700 Mechanical Properties (Typical at 20°C)
| Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HV) |
| Soft (O60) | 200 - 250 | ≥ 55 | ≥ 35% | 40 - 60 |
| Half-Hard (H02) | 260 - 320 | ≥ 220 | ≥ 10% | 75 - 95 |
| Full Hard (H04) | 320 - 380 | ≥ 280 | ≥ 4% | 95 - 120 |
Dimensions & Tolerance Ranges
| Product Form | Common Size Range | Thickness/Diameter Tolerance Ref. | Width/OD Tolerance Ref. |
|---|---|---|---|
| Sheet/Strip | Thickness: 0.1mm - 50mm Width: 10mm - 600mm |
ASTM B152, ASTM B248M | ASTM B152, ASTM B248M |
| Rod/Bar | Diameter: 3mm - 200mm | ASTM B187, ASTM B249M | - |
| Wire | Diameter: 0.1mm - 10mm | ASTM B1, ASTM B3 | - |
| Tube | OD: 6mm - 150mm Wall Thickness: 0.5mm - 10mm |
ASTM B75, ASTM B188 | ASTM B75, ASTM B188 |
Note: The above are standard ranges. Custom sizes are available. Exact tolerances depend on the specific product standard and purchase agreement.
3. Manufacturing Capability & Why Baohui Steel?
At Xi'an Baohui Steel, we combine the heritage of Xi'an's industrial strength with cutting-edge processing technology to deliver world-class C10700 Copper Alloy solutions.
- State-of-the-Art Equipment
6,300-ton Heavy Extrusion Line: Ensures high-density grain structure and uniform material consistency.
Precision CNC & Cold-Drawing: Equipped with 30+ CNC lathes and automated drawing lines for high-accuracy finishing.
Vacuum Heat Treatment: 10 dedicated furnaces to ensure zero-oxidation annealing for oxygen-free grades.
- Rigorous Quality Control (QC)
Spectrum Analysis: 100% verification of chemical composition for every batch.
Conductivity Testing: Verified by digital eddy current conductivity meters to ensure ≥101% IACS.
Non-Destructive Testing (NDT): Ultrasonic and eddy current flaw detection for internal integrity.
Hydrogen Embrittlement Test: Essential for ensuring vacuum-grade performance.
- Proven Industry Cases
Semiconductors: Provided C10700 lead frames for high-power electronics.
Renewable Energy: High-temp busbars for solar energy storage systems.
Automotive: Silver-bearing copper components for EV fast-charging connectors.
4. Certificates & Quality Assurance
We guarantee transparency and compliance through international certifications:
MTC (Mill Test Certificate): Provided with every shipment (EN 10204 3.1).
ISO 9001:2015: Quality Management System certification.
Environmental Compliance: RoHS and REACH-compliant materials.
Third-Party Inspection: SGS, BV, and RINA reports available upon request.
5. FAQ
Q: What is your Minimum Order Quantity (MOQ)?
A: We are flexible to support R&D and mass production. Stock items have an MOQ of 50kg, while custom production runs typically require 500kg.
Q: What is the standard lead time?
A: For stock materials, we ship within 3-7 days. For customised processing or special sizes, the lead time is stable at 15-25 days.
Q: How are the products packaged for international shipping?
A: We use Sea-worthy Packaging. Materials are wrapped in anti-corrosion VCI paper, placed in reinforced fumigated wooden cases, and secured with steel straps to prevent movement and moisture damage.
Q: Do you offer free samples?
A: Yes. We provide free samples (typically under 1kg) for quality verification. The customer only covers the international express fee (DHL/FedEx/TNT).
Q: What are the payment terms?
A: Typically,y 30% T/T deposit, 70% balance against the copy of B/L. For established long-term partners, we also accept L/C at sight.
Q: What are the main differences between C10700 and C11000?
The main difference between C10700 (zero oxygen copper) and C11000 (electrolytic copper, ETP) lies in their oxygen content. C10700 has an extremely low oxygen content (≤0.0005%), almost no oxygen, thus exhibiting excellent resistance to hydrogen embrittlement, higher ductility, and better weldability, making it particularly suitable for high-temperature applications in reducing atmospheres. C11000 contains a small amount of oxygen (approximately 0.02%-0.04%), is slightly less expensive, and is a general-purpose high-conductivity copper.
Ready to Boost Your Project Performance with C10700 Copper Alloy?
Partner with China's leading speciality copper manufacturer for reliable quality and stable supply.
Get a Free Quote Now! Email:baohui@bhsteelpipe.com
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