{"product_id":"carbide-copper-sheet-flat-plate-100x100mm-w70cu30-w80cu20","title":"Carbide Copper Sheet Flat Plate 100*100mm, Thick 1\/4\/5\/6\/8mm W70Cu30 W80Cu20","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eCarbide Copper Sheet 100×100mm — Precision Alloy Flat Plate for Electrical \u0026amp; Machining Applications\u003c\/h2\u003e\n\u003cp\u003eWhen your project demands a flat plate that combines the electrical conductivity of copper with the wear resistance of tungsten carbide, standard sheet metal simply falls short. Engineers, EDM machinists, and electrical contact fabricators rely on carbide copper alloy plates to deliver consistent performance under high heat and repeated mechanical stress — without warping or rapid erosion.\u003c\/p\u003e\n\u003cp\u003eThese carbide copper flat plates measure 100×100mm (approximately 3.94×3.94 inches) and are available in two alloy grades — W80Cu20 (80% tungsten, 20% copper) and W70Cu30 (70% tungsten, 30% copper) — with thickness options of 1mm (~0.04 in), 4mm (~0.16 in), 5mm (~0.20 in), 6mm (~0.24 in), and 8mm (~0.31 in). Each piece is sold individually (1 PCS per pack) and cut to a uniform square format for immediate use or further machining.\u003c\/p\u003e\n\u003cp\u003eTypical applications include EDM electrode blanks for tungsten copper EDM machining, electrical contact substrates in high-voltage switching gear, heat sink base plates in power electronics assemblies, and resistance welding electrode tips requiring low erosion rates and stable arc performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e \u003cstrong\u003eCompatible with:\u003c\/strong\u003e EDM machines, resistance welding equipment, electrical contact assemblies, heat dissipation modules, and precision CNC machining setups requiring tungsten-copper alloy stock.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Carbide Copper Alloy Flat Plates\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e \u003cstrong\u003eTwo Alloy Grades Available\u003c\/strong\u003e\n\u003cp\u003eChoose W80Cu20 for maximum hardness and arc erosion resistance, or W70Cu30 for slightly higher conductivity and easier machinability — both grades are sintered to a dense, uniform microstructure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e \u003cstrong\u003ePrecise 100×100mm Square Format\u003c\/strong\u003e\n\u003cp\u003eEach plate is cut to a consistent 100×100mm footprint, making it straightforward to fixture, clamp, or further machine to your exact electrode or contact geometry.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e \u003cstrong\u003eFive Thickness Options (1–8mm)\u003c\/strong\u003e\n\u003cp\u003eSelect from 1mm, 4mm, 5mm, 6mm, or 8mm thickness to match your electrode depth requirements or contact stack height without unnecessary material removal.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚡\u003c\/span\u003e \u003cstrong\u003eLow Electrical Resistance\u003c\/strong\u003e\n\u003cp\u003eThe copper matrix provides a continuous conductive network through the tungsten skeleton, delivering low bulk resistivity suitable for EDM discharge and electrical contact applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🌡️\u003c\/span\u003e \u003cstrong\u003eExcellent Thermal Stability\u003c\/strong\u003e\n\u003cp\u003eTungsten's high melting point combined with copper's thermal conductivity allows these plates to dissipate heat rapidly, resisting deformation and surface cracking under repeated thermal cycling.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e \u003cstrong\u003eCorrosion-Resistant Alloy Composition\u003c\/strong\u003e\n\u003cp\u003eThe sintered tungsten-copper matrix resists oxidation and chemical attack better than pure copper sheet, extending service life in humid or mildly corrosive industrial environments.\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 — Tungsten Copper Alloy Flat Plate\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial Grade\u003c\/th\u003e\n\u003ctd\u003eW80Cu20 \/ W70Cu30 (Tungsten-Copper Alloy)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTungsten Content\u003c\/th\u003e\n\u003ctd\u003eW80Cu20: 80 wt% W  |  W70Cu30: 70 wt% W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCopper Content\u003c\/th\u003e\n\u003ctd\u003eW80Cu20: 20 wt% Cu  |  W70Cu30: 30 wt% Cu\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePlate Dimensions\u003c\/th\u003e\n\u003ctd\u003e100 × 100 mm (3.94 × 3.94 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThickness Options\u003c\/th\u003e\n\u003ctd\u003e1 mm \/ 4 mm \/ 5 mm \/ 6 mm \/ 8 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDensity (typical)\u003c\/th\u003e\n\u003ctd\u003eW80Cu20: ~15.0–15.6 g\/cm³  |  W70Cu30: ~13.8–14.5 g\/cm³\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHardness (typical)\u003c\/th\u003e\n\u003ctd\u003eW80Cu20: ~230–260 HB  |  W70Cu30: ~200–230 HB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eElectrical Conductivity\u003c\/th\u003e\n\u003ctd\u003eW80Cu20: ~28–32% IACS  |  W70Cu30: ~35–40% IACS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThermal Conductivity\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSurface Condition\u003c\/th\u003e\n\u003ctd\u003eSintered, ground flat (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePacking Quantity\u003c\/th\u003e\n\u003ctd\u003e1 PCS per order unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight per Piece\u003c\/th\u003e\n\u003ctd\u003eSee variant options\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 between W80Cu20 and W70Cu30?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eW80Cu20 contains more tungsten, giving it higher hardness (~230–260 HB) and better arc erosion resistance — ideal for EDM electrodes and high-wear electrical contacts. W70Cu30 has a higher copper content, which improves electrical and thermal conductivity and makes it slightly easier to machine, making it a good choice for heat sink bases and lower-wear contact applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhich thickness should I select for EDM electrode blanks?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eFor shallow cavity EDM work, 1mm or 4mm plates are commonly used as starting stock. Deeper cavities or electrodes requiring significant Z-axis depth typically call for 6mm or 8mm blanks. Choose a thickness at least 1–2mm greater than your finished electrode depth to allow for fixturing and surface grinding.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan these plates be machined with standard carbide tooling?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. Tungsten-copper alloys are machinable with sharp carbide end mills and grinding wheels. W70Cu30 machines more freely than W80Cu20 due to its higher copper content. Use low feed rates, sharp tooling, and adequate coolant to achieve clean edges and minimize tool wear. Wire EDM is also a common and effective method for cutting these plates to shape.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these plates corrosion-resistant enough for outdoor or humid environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eTungsten-copper alloys offer better oxidation resistance than pure copper, but they are not fully corrosion-proof in highly aggressive environments. For indoor industrial use, switchgear enclosures, or controlled-humidity settings, these plates perform reliably over extended service periods. For outdoor or salt-spray environments, consider applying a protective coating after machining.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these compatible with resistance welding electrode holders?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. The 100×100mm square format can be machined down to standard electrode tip geometries (flat, dome, or truncated cone) to fit most resistance welding electrode holders. W80Cu20 is the more common grade for welding electrodes due to its superior hardness and low erosion rate under repeated welding cycles.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between a carbide copper plate and a pure copper sheet?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003ePure copper sheet offers maximum conductivity but is soft and erodes quickly under arc discharge or mechanical wear. Carbide copper (tungsten-copper alloy) sacrifices some conductivity in exchange for dramatically higher hardness, arc erosion resistance, and thermal stability — making it the preferred choice for EDM electrodes, electrical contacts, and heat-loaded components where pure copper would deform or wear out rapidly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs one piece sufficient for a single EDM electrode or contact?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eIn most cases, yes — one 100×100mm plate provides enough material to machine one or more electrode blanks or contact substrates, depending on your finished part dimensions. For batch production or larger electrodes, consider ordering multiple pieces. Each unit in this listing ships as 1 PCS.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your Material grade, Width x Length x Thickness, and Packing QTY above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"W80Cu20 \/ 100*100*1mm \/ 1 PCS","offer_id":52409297371410,"sku":"Adaah013755x1","price":54.33,"currency_code":"USD","in_stock":true},{"title":"W80Cu20 \/ 100*100*5mm \/ 1 PCS","offer_id":52409297404178,"sku":"Adaah013756x1","price":158.7,"currency_code":"USD","in_stock":true},{"title":"W80Cu20 \/ 100*100*6mm \/ 1 PCS","offer_id":52409297436946,"sku":"Adaah013757x1","price":180.46,"currency_code":"USD","in_stock":true},{"title":"W80Cu20 \/ 100*100*8mm \/ 1 PCS","offer_id":52409297469714,"sku":"Adaah013758x1","price":229.83,"currency_code":"USD","in_stock":true},{"title":"W70Cu30 \/ 100*100*1mm \/ 1 PCS","offer_id":52409297502482,"sku":"Adaah013776x1","price":48.21,"currency_code":"USD","in_stock":true},{"title":"W70Cu30 \/ 100*100*4mm \/ 1 PCS","offer_id":52409297535250,"sku":"Adaah013777x1","price":97.85,"currency_code":"USD","in_stock":true},{"title":"W70Cu30 \/ 100*100*6mm \/ 1 PCS","offer_id":52409297568018,"sku":"Adaah013778x1","price":140.61,"currency_code":"USD","in_stock":true},{"title":"W70Cu30 \/ 100*100*8mm \/ 1 PCS","offer_id":52409297600786,"sku":"Adaah013779x1","price":189.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture1of6_df7bbe2d-a819-4e3b-bad2-d296744c50ec.jpg?v=1782377977","url":"https:\/\/homediyer.com\/products\/carbide-copper-sheet-flat-plate-100x100mm-w70cu30-w80cu20","provider":"HomeDIYer","version":"1.0","type":"link"}