C10100 Oxygen-Free Electronic Copper, also known as OFE, is a 99.99% pure copper with 0.0005% oxygen content. C101 achieves a minimum 101% IACS conductivity rating. This copper is finished to a final form in a carefully regulated, oxygen-free environment. C10100 OFE has High ductility, high electrical and thermal conductivity and low volatility under high vacuum.
Chemical Composition
C10100 is primarily composed of copper (Cu), with extremely high purity:
Copper content: ≥99.99%, some standards require ≥99.95%.
Oxygen content: ≤0.0005% (5ppm), some specifications ≤0.001% (10ppm), far lower than ordinary copper materials.
Other impurities: Total trace elements such as calcium (Ca), phosphorus (P), sulfur (S), zinc (Zn), and lead (Pb) <0.001%, ensuring material purity.
Physical Properties
Electrical Conductivity:
Conductivity: ≥100% IACS (International Standard for Annealed Copper), some annealed states can reach 102% IACS, approaching the theoretical limit of pure copper.
Resistivity: Extremely low, resistivity at 20℃ is only 0.00000168 Ω·mm²/m, reducing energy loss and improving current transmission efficiency.
Thermal Conductivity:
Thermal conductivity: 398 W/(m·K), suitable for high-efficiency heat transfer equipment such as radiators and heat exchangers.
Mechanical Properties:
Tensile Strength: 210~240 MPa (soft state), elongation ≥45%, maintaining 35% elongation even at low temperature (4K), fatigue limit 120 MPa (10⁷ cycles).
Machining Performance:
Good forgeability, excellent cold and hot working performance, can be drawn into 0.003mm ultrafine wire, deep drawing limit ratio (LDR) reaches 2.3.
Vacuum Performance:
Vacuum Exhaust Rate: <1×10⁻¹¹ Torr·L/(s·cm²), no gas release in an extreme vacuum environment of 10⁻⁸Pa, meeting the stringent requirements of particle accelerator cavity resonators, etc.
Product Specifications
| End Product | Specification |
| Bar | ASTM F68, B152 |
| Bar, Bus | ASTM B187 |
| Foil, Printed Circuits | ASTM F68, B451 |
| Pipe, Bus | ASTM B188 |
| Plate | ASTM F68, B152 |
| Plate, Clad | ASTM B432 |
| Rod | ASTM F68 |
| Rod, Bus | ASTM B187 |
| Shapes | ASTM F68 |
| Shapes, Bus | ASTM B187 |
| Sheet | ASTM F68, B152 |
| Sheet, Printed Circuits | ASTM F68, B451 |
| Strip | ASTM B272, F68, B152 |
| Strip, Printed Circuits | ASTM B451, F68 |
| Tube, Bus | ASTM B188 |
| Tube, Finned | ASTM B359 |
| Tube, Rectangular Waveguide | ASTM F68, MILITARY MIL-W-85 |
| Tube, Seamless | ASTM F68, B75, B641 |
| Tube, Welded | ASTM B447, B641 |
| Tube, Welded for Air Conditioning and Refrigeration Service | ASTM B640 |
| Wire, Coated With Lead Alloy | ASTM B189 |
| Wire, Coated With Nickel | ASTM B355 |
| Wire, Coated With Silver | ASTM B298 |
| Wire, Coated With Tin | ASTM B33, B246 |
| Wire, Hard Drawn | ASTM B272, F68, B1, FEDERAL QQ-W-343 |
| Wire, Medium-Hard Drawn | ASTM F68, B2 |
| Wire, Soft | AMS 4700, ASTM B48, F68, B3 |
| Wire, Stranded | ASTM B496, B174, B173, B172, B226, B286, B470, B8, FEDERAL QQ-B-575 |
Products Description
Q: What does "OFE" stand for?
A: OFE stands for Oxygen-Free Electronic.
Q: What is the electrical conductivity of C10100?
A: C10100 has the highest electrical conductivity of all coppers, rated at 101% IACS (International Annealed Copper Standard). This is the benchmark for 100% conductivity.
Q: What is the thermal conductivity of C10100?
A: It has excellent thermal conductivity, approximately 391 W/m·K at 20°C, making it ideal for heat exchangers and cooling applications.
Q: Is C10100 resistant to hydrogen embrittlement?
A: Yes. Unlike oxygen-bearing coppers like C11000 (ETP), C10100 cannot become embrittled when exposed to hydrogen at high temperatures because it has no oxygen to react with.
about us
GNEE is a leading manufacturer and global supplier of high-quality, precision-engineered copper products. We specialize in providing a comprehensive range of copper solutions tailored to meet the rigorous demands of various industries worldwide, including HVAC/R, automotive, construction, electrical engineering, and industrial machinery.
Our Extensive Product Portfolio:
Copper Tubes & Pipes:
We supply a full spectrum of copper tubes, including Round Pipes, Square Pipes, Welded Pipes, Seamless Pipes, Heat Exchanger Tubes, and Condenser Tubes, designed for superior thermal conductivity and corrosion resistance.
Copper Sheets & Plates:
Our flat-rolled products range from delicate Copper Foils and Thin Sheets to heavy-duty Plates and Circles (Round Plates), ideal for fabrication, roofing, and electrical applications.
Copper Bars & Rods:
We offer Copper Bars in various profiles such as Round Bars, Square Bars, and Hexagonal Bars, providing excellent machinability and strength for precision parts.
Copper Wires & Strips:
Our product line also includes high-conductivity Copper Wires and finely manufactured Copper Strips, essential for electrical components and connectors.
All our products are manufactured to international quality standards, with a strong focus on common American grades and ASTM specifications to ensure global compatibility and performance. Our key materials include:
C11000 (Electrolytic Tough Pitch - ETP Copper)
C10200 (Oxygen-Free Copper - OFC)
C12200 (Phosphorus Deoxidized Copper, DHP)
C10100 (Oxygen-Free Electronic Copper - OFE)
C26000 (Cartridge Brass, 70/30)
C27200 (Brass, 65/35)
C44300, C68700 (Admiralty Brass)
C70600 (Copper Nickel, 90/10)
C71500 (Copper Nickel, 70/30)
These materials conform to critical standards such as ASTM B111 (Copper and Copper-Alloy Seamless Condenser Tubes and Ferrule Stock), ASTM B68 (Seamless Copper Tube), ASTM B75 (Seamless Copper Tube), ASTM B88 (Seamless Copper Water Tube), ASTM B152 (Copper Sheet, Plate, Strip, and Rolled Bar), ASTM B187 (Copper Bus Bar, Rod, and Shapes), and ASTM B601 (Temper Designations for Copper and Copper Alloys).
