C11000 Cu-ETP Copper Coil
C11000 Electrolytic Tough Pitch (ETP) Copper in Sheet / Plate / Coil, Rod & Rectangle (Square Edge). We carry a very large range of sizes and will cut the material to length. C11000 Electrolytic Tough Pitch (ETP) Copper is produced by the direct conversion of selected refined cathodes and castings under carefully controlled conditions to prevent contamination of the pure oxygen-free metal during processing. The method of producing OFHC copper ensures extra high grade of metal with a copper content of 99.99%.
With so small a content of extraneous elements, the inherent properties of elemental copper are brought forth to a high degree. This is the most common copper. It is universal for electrical applications. ETP has a minimum conductivity rating of 100% IACS and is required to be 99.9% pure. It has 0.02% to 0.04% oxygen content (typical). Most ETP sold today will meet or exceed the 101% IACS specification. As with OF copper, silver (Ag) content is counted as copper (Cu) for purity purposes.
| 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 | ||
