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When your project demands a conductor that won't let you down, generic copper tape just doesn't cut it. Whether you're a hobbyist building RF shielding, an engineer prototyping a flexible circuit, or a craftsperson working with heat-sensitive assemblies, you need copper stock that is dimensionally consistent and genuinely high-purity. This pure copper foil strip is designed for exactly those users — people who care about conductivity, formability, and repeatability.
Each roll is made from 99.9% pure copper (Cu), available in thicknesses ranging from 0.01 mm to 0.5 mm (approximately 0.0004 in to 0.020 in) and widths from 5 mm to 300 mm (approximately 0.20 in to 11.81 in). Standard roll length is 1 m per order. The foil is soft-annealed for flexibility, allowing it to be bent, cut, and formed without cracking.
Typical applications include EMI/RFI shielding in electronics enclosures, grounding straps and bus bars in low-voltage DC systems, heat spreader shims between components, decorative inlay work in woodworking and resin casting, and flexible electrode strips for battery or electrochemical DIY projects. Search terms like "thin copper shim stock", "copper foil roll for shielding", and "flexible copper strip for grounding" all describe exactly what this product delivers.
| Material | 99.9% Pure Copper (Cu) |
|---|---|
| Thickness Range | 0.01 mm – 0.5 mm (0.0004 in – 0.020 in) |
| Width Range | 5 mm – 300 mm (0.20 in – 11.81 in) |
| Length per Roll | 1 m (39.4 in) |
| Temper / Condition | Soft-annealed (O temper) |
| Surface Finish | Mill finish, uncoated, bare copper |
| Electrical Conductivity | Typically ≥58 MS/m (IACS ≥100%) |
| Thermal Conductivity | Typically ~385 W/(m·K) |
| Density | ~8.96 g/cm³ |
| Melting Point | ~1,085 °C (1,985 °F) |
| Tolerance (Thickness) | See variant options |
| Tolerance (Width) | See variant options |
| Packaging | Rolled, protective wrap |
For EMI/RFI shielding and grounding straps, 0.05–0.1 mm is typically sufficient and easy to form. For heat spreader shims between components, 0.1–0.3 mm provides better thermal mass. For structural or mechanical applications such as bus bars or shim stock, 0.3–0.5 mm offers more rigidity. If you are unsure, start with 0.1 mm — it is the most versatile gauge in this range.
Select a width that matches or slightly exceeds the area you need to cover. For grounding straps, 10–20 mm is common. For PCB shielding strips, 5–15 mm is typical. For larger heat spreaders or decorative inlay, widths of 50–100 mm or more may be appropriate. The variant selector shows all available width options for each thickness.
Soft-annealed copper is not intended for load-bearing structural applications. Its tensile strength is typically 200–250 MPa in the annealed state. It is well-suited for electrical, thermal, and light mechanical applications such as shims, gaskets, and flexible connectors. For higher-strength requirements, consider half-hard or hard-temper copper strip.
Bare copper will oxidize and develop a brownish or greenish patina when exposed to air and moisture. This patina (cuprous/cupric oxide) actually slows further corrosion. For indoor, sealed, or low-humidity environments, bare copper performs reliably for years. If you need a bright finish or corrosion-free surface long-term, consider applying a clear lacquer or storing unused strips in a sealed bag.
Yes. The uncoated bare copper surface solders readily with standard 60/40 or lead-free solder and rosin or no-clean flux. For very thin gauges (≤0.05 mm), use a low-temperature iron and work quickly to avoid burning through the foil. Thicker gauges (≥0.1 mm) are more forgiving and can be soldered with standard technique.
No. This is bare, uncoated copper foil strip with no adhesive backing. It is raw metal stock intended for cutting, forming, soldering, or mechanical fastening. If you need adhesive-backed copper tape for quick application, that is a different product. This foil is for applications where you want full metal-to-metal contact, soldering, or custom fabrication.
For gauges ≤0.1 mm, ordinary scissors, a craft knife, or a rotary cutter work well. For 0.1–0.3 mm, heavy-duty scissors or tin snips are recommended. For 0.3–0.5 mm, tin snips or a metal shear will give the cleanest edge. Always deburr cut edges with fine sandpaper or a file before handling to avoid cuts from sharp edges.
