{"product_id":"copper-sheet-roll-metal-foil-plate-03mm-thick-305mm-width","title":"Copper Sheet Roll Metal Foil Plate, 0.3mm Thick, 305mm Width, 100-1000mm Length","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eCopper Sheet 0.3mm Thick — Precision-Cut Copper Foil Plate for Electrical, Craft \u0026amp; Thermal Applications\u003c\/h2\u003e\n\u003cp\u003eWhen your project demands a conductor that won't let you down — whether you're shielding sensitive electronics, lining a heat spreader, or cutting custom gaskets — finding a copper sheet with consistent thickness and reliable dimensions is half the battle. This copper sheet 0.3mm foil plate is sized for makers, engineers, and repair technicians who need a workable, solderable copper surface without ordering industrial minimums.\u003c\/p\u003e\n\u003cp\u003eEach piece is cut from C110 electrolytic tough-pitch (ETP) copper, delivering ≥99.9% copper purity. The sheet measures 305mm (≈12 in) wide and is available in lengths from 100mm to 1000mm (≈3.9–39.4 in) at a uniform 0.3mm (≈0.012 in) thickness. Surface finish is mill-bright with a smooth, burr-minimized edge on cut sides.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include RF\/EMI shielding panels in enclosures, thermal interface layers between heat sinks and components, decorative inlay work in woodworking and jewelry, and replacement bus-bar strips in battery packs or solar installations. The 305mm standard width fits directly into common sheet-metal brakes and laser-cutter beds, making it a go-to copper foil plate for prototyping workflows.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e \u003cstrong\u003eCompatibility:\u003c\/strong\u003e Suitable for soldering, brazing, and cold-forming. Compatible with standard tin-lead and lead-free solder alloys. Can be cut with tin snips, rotary cutters, or laser. Not recommended for applications requiring temper harder than H00 (soft-annealed).\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Copper Sheet Foil Plates\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e \u003cstrong\u003eConsistent 0.3mm Gauge\u003c\/strong\u003e\n\u003cp\u003eThickness held to ±0.02mm tolerance across the full 305mm width, ensuring predictable bend radii and uniform electrical resistance per unit length.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚡\u003c\/span\u003e \u003cstrong\u003eHigh Electrical Conductivity\u003c\/strong\u003e\n\u003cp\u003eC110 ETP copper achieves ≥100% IACS conductivity rating, making it the standard choice for bus bars, grounding straps, and EMI shielding applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🌡️\u003c\/span\u003e \u003cstrong\u003eExcellent Thermal Transfer\u003c\/strong\u003e\n\u003cp\u003eThermal conductivity of approximately 385–400 W\/(m·K) allows this foil to act as an effective heat spreader between components and heat sinks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e✂️\u003c\/span\u003e \u003cstrong\u003eMultiple Length Options\u003c\/strong\u003e\n\u003cp\u003eAvailable in 100, 150, 200, 250, 300, 400, 500, and 1000mm lengths — order exactly what your project requires without paying for excess material.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛠️\u003c\/span\u003e \u003cstrong\u003eSolderable \u0026amp; Formable\u003c\/strong\u003e\n\u003cp\u003eSoft-annealed temper allows hand-bending to tight radii without cracking. Accepts standard flux-core solder and silver-bearing alloys for reliable joints.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔬\u003c\/span\u003e \u003cstrong\u003eMill-Bright Surface Finish\u003c\/strong\u003e\n\u003cp\u003eClean, oxide-minimized surface straight from the mill reduces prep time before soldering, plating, or bonding — no sanding required for most applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Copper Sheet Foil Plate\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eC110 Electrolytic Tough-Pitch (ETP) Copper, ≥99.9% Cu\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThickness\u003c\/th\u003e\n\u003ctd\u003e0.3mm (≈0.012 in) ±0.02mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWidth\u003c\/th\u003e\n\u003ctd\u003e305mm (≈12.0 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Lengths\u003c\/th\u003e\n\u003ctd\u003e100 \/ 150 \/ 200 \/ 250 \/ 300 \/ 400 \/ 500 \/ 1000mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTemper\u003c\/th\u003e\n\u003ctd\u003eSoft-annealed (H00)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSurface Finish\u003c\/th\u003e\n\u003ctd\u003eMill-bright, burr-minimized cut edges\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eElectrical Conductivity\u003c\/th\u003e\n\u003ctd\u003e≥100% IACS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThermal Conductivity\u003c\/th\u003e\n\u003ctd\u003e~385–400 W\/(m·K)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTensile Strength\u003c\/th\u003e\n\u003ctd\u003eTypically 220–260 MPa (soft temper)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePacking Qty\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eCopper Sheet \/ Metal Foil Plate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the right length for my project?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure the longest dimension of your target area and add 5–10mm for trimming allowance. For continuous runs (e.g., bus bars or shielding panels), the 500mm or 1000mm option minimizes seam joints. For small patches or gaskets, the 100–200mm lengths reduce waste.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this copper sheet strong enough for structural use?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eAt 0.3mm, this foil is designed for electrical, thermal, and decorative applications rather than load-bearing structures. Soft-annealed C110 copper has a tensile strength of typically 220–260 MPa, which is adequate for flexible connectors and shielding but not for mechanical fastening under sustained stress.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill this copper sheet corrode or tarnish over time?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eCopper naturally oxidizes to form a patina (cupric oxide) when exposed to air and moisture. For electrical contacts, apply a thin layer of flux or contact grease after installation. For decorative use, a clear lacquer coat preserves the mill-bright finish. In dry indoor environments, visible tarnish typically develops over weeks to months.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I solder directly to this copper foil plate?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. The mill-bright surface accepts standard tin-lead (Sn63\/Pb37) and lead-free (SAC305) solder alloys with rosin or no-clean flux. Lightly abrade or degrease the surface with isopropyl alcohol before soldering if the sheet has been handled, as skin oils can inhibit wetting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat tools can I use to cut this copper sheet?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eAt 0.3mm thickness, this foil cuts cleanly with aviation tin snips, a sharp utility knife against a steel rule, a rotary cutter, or a laser cutter. Avoid standard scissors, which can distort the edge. A sheet-metal brake or hand-bending jig works well for straight folds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this the right copper foil for EMI\/RF shielding?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. C110 ETP copper at 0.3mm provides effective attenuation for frequencies from low MHz into the GHz range when properly grounded and overlapped at seams. For enclosure lining, use conductive adhesive tape or solder the seams to maintain a continuous ground plane. Contact us to confirm suitability for your specific frequency and attenuation requirements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow does the packing quantity option affect my order?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eSome size variants are available in a 2-piece pack (305×100mm) or as single pieces. The packing quantity is shown in the variant selector. Pricing reflects the per-pack cost, so compare the per-piece price if you need multiple lengths.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your size and packing quantity above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"305×100mm \/ 0.3mm \/ 2 pcs","offer_id":52409353568530,"sku":"BEAR013579x1","price":25.85,"currency_code":"USD","in_stock":true},{"title":"305×150mm \/ 0.3mm \/ 1 pcs","offer_id":52409353601298,"sku":"BEAR013580x1","price":19.65,"currency_code":"USD","in_stock":true},{"title":"305×200mm \/ 0.3mm \/ 1 pcs","offer_id":52409353634066,"sku":"BEAR013581x1","price":24.64,"currency_code":"USD","in_stock":true},{"title":"305×250mm \/ 0.3mm \/ 1 pcs","offer_id":52409353666834,"sku":"BEAR013582x1","price":30.4,"currency_code":"USD","in_stock":true},{"title":"305×300mm \/ 0.3mm \/ 1 pcs","offer_id":52409353699602,"sku":"BEAR013583x1","price":36.15,"currency_code":"USD","in_stock":true},{"title":"305×400mm \/ 0.3mm \/ 1 pcs","offer_id":52409353732370,"sku":"BEAR013585x1","price":48.4,"currency_code":"USD","in_stock":true},{"title":"305×500mm \/ 0.3mm \/ 1 pcs","offer_id":52409353765138,"sku":"BEAR013587x1","price":59.89,"currency_code":"USD","in_stock":true},{"title":"305×1000mm \/ 0.3mm \/ 1 pcs","offer_id":52409353797906,"sku":"BEAR013593x1","price":117.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture2of4_aa7b20a8-ac4e-4a20-a2e9-bb1205f3a4f7.jpg?v=1782402893","url":"https:\/\/homediyer.com\/products\/copper-sheet-roll-metal-foil-plate-03mm-thick-305mm-width","provider":"HomeDIYer","version":"1.0","type":"link"}