Why is C10100 used in high-vacuum and aerospace applications?
Its ultra-low oxygen content prevents the outgassing of water vapor (H₂O) and other oxides in a high vacuum, which is critical for maintaining the integrity of the vacuum environment. It is also resistant to hydrogen embrittlement.
Is C10100 resistant to hydrogen embrittlement?
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.
What ASTM standards cover C10100 products?
Key ASTM standards include:
ASTM B170: Oxygen-Free Electrolytic Copper-Refinery Shapes
ASTM F68: Oxygen-Free Copper in Unalloyed Forms for Electron Devices
ASTM B152: Sheet, Plate, Strip, and Rolled Bar
ASTM B187: Bus Bar, Rod, and Shapes





What are the common tempers or hardness levels available for C10100?
C10100 is available in various tempers, including:
Annealed (O60 / Soft): For maximum ductility.
Hard Drawn (H04): For higher strength.
As-Fabricated: Varies based on the manufacturing process.
Can C10100 be welded and brazed?
Yes, it has excellent weldability and brazeability. Common methods include TIG welding, electron beam welding, and furnace brazing in a protective atmosphere to prevent oxidation.
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).




