What is C10200 copper material?
C10200 is a high-purity, oxygen-free copper alloy prized for its exceptional electrical and thermal conductivity, making it the benchmark material for high-performance electrical and electronic applications.
UNS Number: C10200
Common Name: Oxygen-Free Electronic Copper (OFE)
Copper Purity: ≥ 99.95% Cu (typically 99.99%+).
Oxygen Content: ≤ 0.0010% (10 ppm), which defines it as "oxygen-free."
Primary Standard: ASTM B152 (Standard Specification for Copper Sheet, Strip, Plate, and Rolled Bar).
C10200 material properties
Chemical Composition (per ASTM B152)
| Element | Composition (Maximum, %) |
|---|---|
| Copper (Cu) | ≥ 99.95 |
| Oxygen (O) | ≤ 0.0010 |
| Total Other Impurities | ≤ 0.05 |
Physical Properties
| Property | Value | Notes |
|---|---|---|
| Density | 8.94 g/cm³ (0.323 lb/in³) | At 20°C (68°F) |
| Melting Point | 1083°C (1981°F) | |
| Electrical Conductivity (IACS) | ≥ 101% | This is its defining property. IACS (International Annealed Copper Standard) uses pure, annealed copper as 100% baseline. |
| Electrical Conductivity (Volume) | ~58.6 MS/m | At 20°C |
| Electrical Resistivity | 1.724 µΩ·cm | Theoretical minimum at 20°C |
| Thermal Conductivity | 391 W/(m·K) | At 20°C. Extremely high. |
| Coefficient of Thermal Expansion | 16.7 x 10⁻⁶ /K | 20-100°C range |
| Modulus of Elasticity | 115 - 130 GPa |
Mechanical Properties
Commonly supplied in the Annealed (O60/O61) temper for maximum ductility. Can be cold-worked to higher strengths.
| Temper / Condition | Tensile Strength (MPa) | Yield Strength (0.5% Ext, MPa) | Elongation (%) | Hardness (Rockwell F Scale) |
|---|---|---|---|---|
| Annealed (O60) | 200 - 240 | 35 - 70 | 45 - 60 | 35 - 45 |
| Half-Hard (H04) | 260 - 300 | 200 - 240 | 20 - 30 | 65 - 75 |
| Full-Hard (H08) | 340 - 380 | 310 - 345 | 4 - 12 | 80 - 90 |
Key Advantages
Immunity to "Hydrogen Embrittlement": The ultra-low oxygen content prevents the formation of steam pockets (water vapor) if the material is heated in a reducing atmosphere (e.g., hydrogen). This is a critical advantage over oxygen-bearing coppers like C11000 (ETP Copper).
Excellent Ductility and Workability: Excellent for cold and hot working processes like rolling, drawing, stamping, and forging.
Superior Weldability & Brazability: Compatible with most common welding and brazing techniques.
Good Surface Finish: Capable of achieving a bright, clean surface after annealing, suitable for plating.
Corrosion Resistance: Good resistance to atmospheric corrosion, fresh water, and non-oxidizing acids. Will tarnish in sulfur-containing atmospheres.
Distinction from C10100 (OFHC)
C10200 is often compared to C10100 (Oxygen-Free High-Conductivity Copper). They are very similar, but C10100 has a higher guaranteed purity (≥99.99% Cu) and a slightly higher minimum conductivity. C10100 (OFHC) is typically specified for the most extreme purity requirements (e.g., aerospace-grade applications). C10200 (OFE) is considered the commercial, high-performance electronic grade that meets the vast majority of stringent application needs.
About us
Founded in 2008, our company specializes in the international trade of high-quality copper products. We are dedicated to providing a comprehensive range of copper-based solutions to a global clientele.
Our core product portfolio encompasses a diverse spectrum of copper and copper alloy forms, including:
Copper Tubes & Pipes: Precision-engineered for applications in HVACR, plumbing, and industrial systems.
Copper Sheets & Plates: Available in various grades and thicknesses for roofing, fabrication, and architectural uses.
Copper Bars & Rods: Supplied as solid profiles, hexagons, or squares for machining, electrical components, and manufacturing.
Copper Wires & Strands: From fine enamelled wires to large conductive cables for electrical and winding applications.
Copper Foils & Strips: Thin-rolled products essential for electronics, transformers, RF shielding, and flexible circuits.
We also offer related products such as Copper Coils, Copper Profiles, Copper Blanks, Copper Busbars, Copper Fittings, Copper Alloys (including brass and bronze), Copper Anodes, and Copper Cathodes.
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