C18200 Chromium Copper Alloy
Consumer – Pencil-type & Light Soldering Guns: Tips, Rod Extensions
Electrical – Electrical Connectors, Electron Tube Grid Side Rods, Circuit Breaker Parts, Thermal Conductors Requiring Greater Strength than Copper, Cable, Electric Motor and Generator Components, Wire, High Temperature, Parts for Electronic Devices, Semi Conductor Bases, Contacts, Connectors, Switch Contacts, Electrical Conductors Requiring Greater Strength than Copper, Arcing and Bridging Parts, Switch Gears
Industrial – Plastic Mold Components, Structural Parts, Spot Welding Tips, Flash Welding Electrodes, Molds, Electrode Holder Jaws, Flash Welding Electrodes, Seam Welding Wheels, Current Carrying Shafts and Arms, Heat Sinks, Resistance Welding Machine Electrodes, Wear Plates on Heavy Equipment.
| Copper Rods (Purple Copper) - Detailed Technical Specifications | ||||
| Common Copper Rod Grades, Standards, and Applications | ||||
| UNS No. | Designation | Standard | Key Characteristics | Typical Applications |
| C11000 | ETP (Electrolytic Tough-Pitch) | ASTM B5, B124, B187 | High conductivity (≥100% IACS annealed); Cu+Ag ≥ 99.90%; contains oxygen (≤0.04%); excellent electrical and thermal conductivity | Electrical bus bars, connectors, transformer components, general electrical applications |
| C10100 | OFE (Oxygen-Free Electronic) | ASTM B187 | Cu ≥ 99.99%; exceptionally high conductivity; no oxygen; suitable for critical electronic applications | High-end electronics, vacuum components, semiconductor manufacturing |
| C10200 | OF (Oxygen-Free) | ASTM B187 | Cu ≥ 99.95%; good conductivity; reduced embrittlement risk | Electrical applications requiring high purity |
| C12200 | DHP (Phosphorus-Deoxidized) | ASTM B124 | Cu ≥ 99.85%; P 0.013-0.040%; good weldability and corrosion resistance; conductivity ~79% IACS | Plumbing, heating systems, welded components, automotive brake lines |
| C10300 | Oxygen-Free Copper | ASTM B187 | Cu ≥ 99.95%; excellent mechanical properties; available in H04 temper with 310MPa tensile strength | Forging applications, high-strength electrical components |
| T1 / TU1 | Chinese Standard | GB/T 3952 | High purity; Cu ≥ 99.97%; oxygen content ≤ 0.040% | Electrical copper rods for wire drawing |
| T2 | Chinese Standard | GB/T 5231 | Cu+Ag ≥ 99.90%; similar to C11000; contains minor impurities (Bi≤0.001%, Sb≤0.002%, As≤0.002%, Fe≤0.005%) | General-purpose copper bars and rods |
| Dimensional Specifications for Copper Rods | ||||
| Shape | Diameter / Size Range (mm) | Length Range (mm) | Standard | Temper |
| Round Rod (Cold Drawn) | 5 – 80 | Up to 6000 | EN 12165/13601 | M (extruded), D (drawn) |
| Round Rod (Hot Extruded) | 80 – 140 | Up to 6000 | EN 12165/13601 | M (hot extruded) |
| Round Rod (General) | 6 – 200 | Up to 6000 | ASTM B187 | Soft, 1/4 Hard, 1/2 Hard, Hard |
| Square Rod (Cold Drawn) | 5 – 60 (across flats) | Up to 6000 | EN 12165/13601 | D (drawn) |
| Square Rod (Hot Extruded) | 60 – 100 (across flats) | Up to 6000 | EN 12165/13601 | M (hot extruded) |
| Rectangular Bar (Cold Drawn) | Width: 5 – 125; Thickness: 2.5 – 30 | Up to 6000 | EN 12165/13601 | D (drawn) |
| Rectangular Bar (Hot Extruded) | Width: 60 – 130; Thickness: 30 – 70 | Up to 6000 | EN 12165/13601 | M (hot extruded) |
| Round Rod (Chinese Standard) | 6.0 – 35.0 (hot rolled) / 6.0 – 12.0 (hard) | Variable | GB/T 3952 | R (hot rolled), Y (hard) |
| Electrical Properties of Copper Rods | ||||
| Grade | Temper | Electrical Conductivity (% IACS) | Volume Resistivity (Ω·mm²/m) max | Mass Resistivity (Ω·g/m²) |
| C11000 | Annealed | ≥ 100 | 0.01707 (T1) | 0.15176 (T1) |
| C11000 | Hard / 1/4H / 1/2H / 3/4H | ≥ 97 | / | / |
| T2 / TU2 | Various | / | 0.01724 | 0.15328 |
| C12200 | All | ~79 | / | / |
| TU2 (Oxygen-Free) | Various | / | 0.01777 | 0.15798 |
