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When your project demands reliable electrical conductivity, thermal performance, and a material that machines cleanly without surprises, standard hardware-store metal simply falls short. Makers, electronics hobbyists, jewelers, and small workshop operators who need a consistent, traceable copper stock will find this sheet an essential addition to their bench.
Each piece is cut from 99.9% pure copper flat stock, available in thicknesses from 0.5 mm (approximately 0.020 in) to 4 mm (approximately 0.157 in) and in rectangular or square formats ranging from 50 × 100 mm up to 300 × 300 mm (roughly 2 × 4 in to 11.8 × 11.8 in). Surfaces are mill-finished with a characteristic reddish-orange tone and are free of coatings or plating.
Typical applications include custom bus bars and grounding straps for electrical enclosures, heat spreader blanks for DIY PC cooling builds, stamping and forming blanks for copper jewelry and decorative metalwork, and shielding panels for RF or EMI enclosures in electronics prototyping.
Verified high-purity copper composition delivers consistent electrical conductivity (IACS ≥ 99%) and thermal transfer, making it suitable for precision electrical and thermal management applications.
Available in thicknesses from 0.5 mm to 4 mm and sheet dimensions from 50 × 100 mm to 300 × 300 mm, covering a broad range of DIY and light industrial cutting requirements.
Sheets are cut to stated dimensions with straight edges, minimizing prep time. Suitable for direct use as blanks for stamping, etching, forming, or further machining.
Copper develops a stable patina over time that slows further oxidation. For indoor and controlled-environment applications, no additional coating is required.
With electrical conductivity among the highest of any common engineering metal, these sheets are well-suited for bus bars, grounding plates, and heat spreader applications.
Pure copper is soft enough to cut with standard metal shears, drill, and bend without cracking, while remaining rigid enough to hold shape in finished assemblies.
| Material | 99.9% Pure Copper (C11000 equivalent) |
|---|---|
| Thickness Range | 0.5 mm – 4 mm (0.020 in – 0.157 in) |
| Width / Length Range | 50 mm – 300 mm (1.97 in – 11.81 in) |
| Shape | Rectangle / Square |
| Surface Finish | Mill finish (uncoated) |
| Color | Reddish-orange (natural copper) |
| Electrical Conductivity | ≥ 99% IACS (typical for 99.9% Cu) |
| Hardness | Soft / annealed (typical) |
| Quantity per Order | See variant options |
| Exact Dimensions | See variant options |
For light electrical shielding, jewelry, or decorative work, 0.5 mm – 1 mm is typically sufficient. For structural bus bars, heat spreaders, or parts that need to hold shape under mechanical load, 1.5 mm – 4 mm is more appropriate. If you are unsure, select a mid-range thickness (1.5 mm – 2 mm) as a starting point for prototyping.
Pure copper (C11000) is a soft, ductile metal. It is not intended for structural load-bearing applications. It is well-suited for electrical, thermal, and decorative uses where formability and conductivity matter more than tensile strength. For structural parts, consider copper alloys such as brass or bronze instead.
Copper does not rust (rust is specific to iron-based metals). Over time, copper oxidizes and develops a patina ranging from dark brown to green (verdigris), depending on the environment. This patina is stable and actually slows further corrosion. For applications requiring a bright finish, periodic polishing or a clear lacquer coating can be applied.
Yes. 99.9% pure copper is one of the most solderable and brazeable metals available. It bonds readily with standard tin-lead or lead-free solder, silver solder, and brazing alloys. Clean the surface with flux before soldering for best results.
CNC routing and milling work well with copper sheets, particularly at thicknesses of 1 mm and above. Laser cutting copper is more challenging due to its high reflectivity; fiber lasers with sufficient power can cut thinner sheets, but CO₂ lasers are generally not recommended for copper. Standard metal shears and jigsaws with metal-cutting blades are effective for most DIY applications.
Variants are listed as Thick × Width × Length in millimeters (e.g., 1.5 × 100 × 200 mm). Measure your required blank size first, then select the variant that meets or slightly exceeds your dimensions. If you need a custom size not listed, contact us to confirm availability.
Yes. High-purity copper is the standard material for electrical grounding straps, bus bars, and earthing plates due to its low resistance and reliable long-term conductivity. Ensure mechanical connections are tight and use appropriate hardware rated for copper to avoid galvanic corrosion at joints.
