C10100 C10200 OFHC Oxygen Free Copper Coil
Oxygen-free copper—also referred to as OFC, Cu-OF, Cu-OFE, and oxygen-free, high-conductivity copper (OFHC)—is formed by melting copper and combining it with carbon and carbonaceous gases. The electrolytic copper refining process removes most of the oxygen contained within, resulting in a compound that consists of 99.95–99.99% copper with less than or equal to 0.0005% oxygen.
The high purity levels of oxygen-free copper enhance the properties typical of standard copper material, such as thermal and electrical conductivity, ductility, impact strength, and machinability. Due to these advantageous properties, the material finds use in a variety of industrial applications.
Product Description
| Copper Coils/Strips - Detailed Technical Specifications | ||||
| Common Copper Coil Grades and Specifications | ||||
| GB Grade | JIS Grade | UNS / ASTM | EN / DIN | Type |
| T2 | C1100 | C11000 (ETP) | CW004A / E-Cu58 | Electrolytic Tough-Pitch |
| TU2 | C1020 | C10200 (OF) | CW008A / SE-Cu | Oxygen-Free |
| TU1 | / | C10200 | CW008A | Oxygen-Free |
| TP1 / TP2 | C1200 / C1220 | C12000 / C12200 (DHP) | CW024A / Cu-DHP | Phosphorus-Deoxidized |
| C10300 | / | C10300 | CW020A / Cu-HCP | Oxygen-Free, High Purity |
| Temper Designations for Copper Coils | ||||
| Temper Code | Description | Typical Hardness (HV) | Characteristics | |
| M / O | Soft / Annealed | ≤ 70 | Maximum ductility; lowest strength; excellent formability; suitable for deep drawing and complex forming | |
| Y4 / 1/4H | Quarter Hard | 55 – 100 | Light cold working; balance of strength and ductility; good formability | |
| Y2 / 1/2H | Half Hard | 75 – 120 | Moderate cold working; increased strength; good electrical properties | |
| Y / H | Hard | 80 – 120 | Significant cold working; high strength; good spring properties; limited formability | |
| T / EH / HH | Extra Hard | ≥ 110 | Maximum cold working; highest strength; minimal ductility | |
| Dimensional Specifications for Copper Coils | ||||
| Parameter | Typical Range | Notes | ||
| Thickness Range | 0.035 mm – 20.0 mm | Foil/thin strip: 0.035–1.0 mm; Standard strip: 0.1–3.0 mm; Thick strip: up to 20 mm | ||
| Width Range | 1 mm – 2500 mm | Standard widths: 10–350 mm, 20–160 mm, 30–400 mm; Custom widths available up to 2500 mm | ||
| Coil Weight | 3 – 8 metric tons per coil | Typical for large production coils | ||
| Surface Finish | Mill, Bright, Brush, Pickled, Tinned, Plated | Various finishes available; electroplating/reflow plating can be provided | ||
| Edge Type | Mill Edge, Slit Edge | Slit edge is standard; deburred edges available | ||
