Oxygen-free copper rod
Oxygen-Free Copper Rod is solid bar stock made from Oxygen-Free Copper (OFC), typically corresponding to C10200 (≥99.95% Cu) or the purer C10100 (≥99.99% Cu). The very low oxygen content provides extremely high electrical and thermal conductivity (≥99.8% IACS) and, crucially, grants complete immunity to hydrogen embrittlement. This makes it superior to ETP copper for high-temperature joining. OFC rod is used in applications demanding the highest standards of performance and purity, including high-quality electrical conductors, vacuum components, high-efficiency heat sinks, and magnet wire where consistent conductivity and reliable brazing are essential.
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- Commodity name: Oxygen-free copper rod
Oxygen-Free Copper Rod is solid bar stock made from Oxygen-Free Copper (OFC), typically corresponding to C10200 (≥99.95% Cu) or the purer C10100 (≥99.99% Cu). The very low oxygen content provides extremely high electrical and thermal conductivity (≥99.8% IACS) and, crucially, grants complete immunity to hydrogen embrittlement. This makes it superior to ETP copper for high-temperature joining. OFC rod is used in applications demanding the highest standards of performance and purity, including high-quality electrical conductors, vacuum components, high-efficiency heat sinks, and magnet wire where consistent conductivity and reliable brazing are essential.
Oxygen-free copper rod Description
Applications
Electronics High-Vacuum Technology Semiconductors Cryogenics Telecommunications Aerospace Power Generation Instrumentation Welding & Brazing Medical Devices Product Parameters
Product Name Oxygen-Free Copper Rod (OFC Rod) Material Grades C10100 (OFE - Oxygen-Free Electronic, Min. 99.99% Cu), C10200 (OF - Oxygen-Free, Min. 99.95% Cu) Standard ASTM B49, ASTM B187, DIN 2.0040, JIS H2123, EN 13601 (CW008A/CW009A) Oxygen Content Max 0.0005% (5 ppm) for C10100 Purity (Cu + Ag) Min 99.99% (C10100) or Min 99.95% (C10200) Electrical Conductivity Min 101% IACS (Typical: 101.5% - 102% IACS) Diameter Range 3 mm - 115 mm (Common sizes: 8 mm, 12.5 mm, 16 mm, 20 mm, etc.) Length/Coil Type Rods (Up to 6 meters), Coils (Typically 3MT - 5MT, Continuous Cast) Temper/Condition O (Annealed/Soft), H (Hard/Drawn), Y (Quarter-Hard, Half-Hard, etc.) Key Properties Excellent Ductility, Superior Electrical & Thermal Conductivity, Immunity to Hydrogen Embrittlement, High Impact Strength, Excellent Weldability Applications High-end Electronics, Vacuum Technology, Cryogenic Components, High-Frequency Transmission Lines, Bus Conductors, Specialized Wiring. Approximate grade comparison table
US (ASTM/CDA) China (GB) EU (EN) Germany (DIN) Japan (JIS) Russia (GOST) C10200 TU1 / TU0 CW008A SE-Cu / 2.0070 C1020 M0 / M00 C10100 TU00 CW009A OFE-Cu C1011 M00 Chemical Composition
Designation (UNS/Equivalent) Cu + Ag (%) Zn (%) P (%) O (Max) (%) Fe (Max) (%) Pb (Max) (%) C10100 / TU2 >= 99.99 - - 0.0005 0.001 0.0005 C10200 / TU1 >= 99.95 - - 0.001 0.005 0.005 Mechanical Properties
UNS Designation Temper (State) Tensile Strength (MPa) Yield Strength (0.5% Ext.) (MPa) Elongation (% in 50mm) Typical Hardness (HV/HB) C10100 O60 (Annealed) 205 - 250 40 - 70 35 - 50 45 - 65 HV C10200 O60 (Annealed) 205 - 250 40 - 70 35 - 50 45 - 65 HV Physical Performance
UNS Designation Density (g/cm3) Electrical Conductivity (%IACS) Thermal Conductivity (W/(m⋅K)) Melting Point (Liquidus) (∘C) Modulus of Elasticity (GPa) Thermal Expansion (10−6/K) C10100 8.94 101 - 103 394 - 398 1083 117 17 C10200 8.94 100 - 101 391 - 394 1083 117 17.6 -
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