{"product_id":"c17200-beryllium-copper-sheet-metal-foil-0-08mm-2mm","title":"C17200 Beryllium Bronze Beryllium Copper Sheet Metal Foil Coil Thick 0.08mm-2mm","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eC17200 Beryllium Copper Sheet — Precision Foil Stock for Springs, Contacts \u0026amp; Tooling\u003c\/h2\u003e\n\u003cp\u003eWhen your project demands a metal that holds its shape under repeated stress, resists fatigue, and conducts electricity reliably, standard copper alloys often fall short. Engineers, machinists, and serious DIY makers who work on precision springs, electrical contacts, diaphragms, and tooling inserts need a material that performs at the edge of its spec — and that is exactly where C17200 beryllium copper sheet delivers.\u003c\/p\u003e\n\u003cp\u003eThis listing offers C17200 beryllium bronze foil and sheet stock in thicknesses ranging from 0.08 mm (approximately 0.003 in) up to 2.0 mm (approximately 0.079 in), with a standard width of 200 mm (approximately 7.87 in). Shorter 200 mm × 200 mm squares, mid-length 200 mm × 500 mm strips, and full 200 mm × 1000 mm coil-cut lengths are all available as separate size variants.\u003c\/p\u003e\n\u003cp\u003eTypical applications include precision compression springs and snap-action contacts in electronic assemblies, thin shim stock for bearing clearance adjustment in small engines and gearboxes, flexible diaphragms in pressure sensors and pneumatic valves, and non-sparking tooling blanks for use in hazardous environments where beryllium copper's spark-resistant properties are required.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Suitable for CNC machining, EDM wire cutting, stamping, and manual fabrication. Compatible with standard copper-alloy soldering fluxes and silver brazing alloys. Not recommended for direct contact with ammonia-based environments.\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These C17200 Beryllium Copper Sheets\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\n\u003cstrong\u003eAlloy C17200 Composition\u003c\/strong\u003e\n\u003cp\u003eNominally 1.8–2.0% beryllium with cobalt\/nickel additions, delivering tensile strength typically in the 1,100–1,400 MPa range in the aged condition — among the highest of any copper alloy.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e\n\u003cstrong\u003eWide Thickness Selection\u003c\/strong\u003e\n\u003cp\u003eAvailable from ultra-thin 0.08 mm foil up to 2.0 mm sheet, covering shim, spring, and structural applications in a single product family.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚡\u003c\/span\u003e\n\u003cstrong\u003eExcellent Electrical Conductivity\u003c\/strong\u003e\n\u003cp\u003eConductivity typically 22–28% IACS, making these sheets well-suited for electrical contacts, relay springs, and connector blades where both conductivity and spring-back are required simultaneously.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🌡️\u003c\/span\u003e\n\u003cstrong\u003eThermal Stability\u003c\/strong\u003e\n\u003cp\u003eRetains mechanical properties up to approximately 150–200 °C (300–390 °F), suitable for under-hood automotive sensors, industrial control contacts, and elevated-temperature spring applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\n\u003cstrong\u003eCorrosion \u0026amp; Fatigue Resistance\u003c\/strong\u003e\n\u003cp\u003eResists oxidation, salt spray, and stress-corrosion cracking far better than standard phosphor bronze or brass, extending service life in marine, outdoor, and high-cycle fatigue applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e✂️\u003c\/span\u003e\n\u003cstrong\u003eMachinable \u0026amp; Formable Stock\u003c\/strong\u003e\n\u003cp\u003eSupplied in the solution-annealed (A) condition for easier forming and stamping; can be age-hardened after fabrication to achieve peak strength. Cuts cleanly with carbide tooling or laser.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — C17200 Beryllium Copper Sheet\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eAlloy Designation\u003c\/th\u003e\n\u003ctd\u003eC17200 (CuBe2, 2.1247)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBeryllium Content\u003c\/th\u003e\n\u003ctd\u003e1.80–2.05%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCobalt + Nickel\u003c\/th\u003e\n\u003ctd\u003e0.20–0.60% (min. 0.20% Co)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThickness Range\u003c\/th\u003e\n\u003ctd\u003e0.08 mm – 2.0 mm (0.003 in – 0.079 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWidth\u003c\/th\u003e\n\u003ctd\u003e200 mm (7.87 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLength Options\u003c\/th\u003e\n\u003ctd\u003e200 mm \/ 500 mm \/ 1000 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTemper \/ Condition\u003c\/th\u003e\n\u003ctd\u003eSolution Annealed (A) — age-hardenable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTensile Strength (aged)\u003c\/th\u003e\n\u003ctd\u003eTypically 1,100–1,400 MPa (160–200 ksi)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHardness (aged)\u003c\/th\u003e\n\u003ctd\u003eTypically 36–42 HRC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eElectrical Conductivity\u003c\/th\u003e\n\u003ctd\u003e22–28% IACS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThermal Conductivity\u003c\/th\u003e\n\u003ctd\u003eApprox. 105–130 W\/(m·K)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax Service Temperature\u003c\/th\u003e\n\u003ctd\u003eApprox. 150–200 °C (300–390 °F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDensity\u003c\/th\u003e\n\u003ctd\u003eApprox. 8.25 g\/cm³ (0.298 lb\/in³)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSurface Finish\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePackaging\u003c\/th\u003e\n\u003ctd\u003e1 Pcs per order (flat or rolled depending on thickness)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\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 thickness for my spring application?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eFor light-duty snap-action contacts and thin diaphragms, thicknesses of 0.08–0.2 mm are typical. Medium-duty compression springs and relay blades generally use 0.3–0.6 mm. Structural shims, tooling inserts, and heavy-duty spring plates typically call for 0.8–2.0 mm. If you are unsure, calculate the required spring constant using standard beam-deflection formulas with E ≈ 131 GPa for C17200 in the annealed condition.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this sheet supplied hard (aged) or soft (annealed)?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThese sheets are supplied in the solution-annealed (A) condition, which is softer and easier to stamp, bend, and machine. After forming, you can age-harden the part by heating to approximately 315–340 °C (600–645 °F) for 2–3 hours to achieve peak hardness and tensile strength. This two-step process gives you the best of both worlds: easy fabrication followed by maximum performance.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow does C17200 compare to phosphor bronze or stainless steel for springs?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eC17200 beryllium copper offers significantly higher tensile strength than phosphor bronze (C51000) and comparable or superior fatigue life to many stainless spring steels, while also providing much better electrical conductivity than stainless. It is the preferred choice when a spring must also carry electrical current — for example, in battery contacts, connector fingers, and relay arms.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I solder or braze these sheets?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. C17200 can be soft-soldered using standard rosin-flux tin-silver or tin-lead solders, and silver-brazed using BAg-series filler metals. Avoid fluxes containing ammonia or amines, as these can cause stress-corrosion cracking in beryllium copper. Always perform soldering or brazing before the final age-hardening step if possible, as the heat from brazing can partially anneal a previously aged part.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs beryllium copper safe to machine and handle?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eSolid beryllium copper sheet is safe to handle with bare hands in its as-received form. The health hazard associated with beryllium arises from inhalation of fine dust or fumes generated during grinding, sanding, or welding. Always machine C17200 with flood coolant or mist suppression, use a HEPA-filtered dust collection system, and wear an appropriate respirator when dry-grinding. Follow your local occupational health regulations for beryllium-containing materials.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat size should I order for a shim application?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe 200 mm × 200 mm square variants are ideal for cutting individual shims on a mill or with a punch. If you need multiple shims or longer strips, the 200 mm × 500 mm or 200 mm × 1000 mm options give you more material per piece and are more economical for batch production. Select the thickness that matches your required clearance — common shim thicknesses are 0.08, 0.1, 0.15, 0.2, and 0.25 mm.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill this material corrode in outdoor or marine environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eC17200 beryllium copper has good resistance to atmospheric corrosion, salt spray, and fresh water. It is widely used in marine electrical connectors and outdoor sensor housings. For prolonged immersion in seawater or exposure to strong acids, a protective plating (nickel, gold, or tin) is recommended. Avoid contact with ammonia-based cleaners or fertilizers, which can cause stress-corrosion cracking in copper alloys.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-cta\"\u003e\n🛒 Select your thickness and length above, then add to cart.\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I choose the right thickness for my spring application?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"For light-duty snap-action contacts and thin diaphragms, thicknesses of 0.08–0.2 mm are typical. Medium-duty compression springs and relay blades generally use 0.3–0.6 mm. Structural shims, tooling inserts, and heavy-duty spring plates typically call for 0.8–2.0 mm.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this sheet supplied hard (aged) or soft (annealed)?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"These sheets are supplied in the solution-annealed (A) condition. After forming, age-harden by heating to approximately 315–340 °C for 2–3 hours to achieve peak hardness and tensile strength.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How does C17200 compare to phosphor bronze or stainless steel for springs?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"C17200 beryllium copper offers significantly higher tensile strength than phosphor bronze and comparable fatigue life to many stainless spring steels, while providing much better electrical conductivity than stainless.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I solder or braze these sheets?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. C17200 can be soft-soldered using standard rosin-flux solders and silver-brazed using BAg-series filler metals. Avoid ammonia-based fluxes which can cause stress-corrosion cracking.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is beryllium copper safe to machine and handle?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Solid beryllium copper sheet is safe to handle. Health hazards arise from inhalation of fine dust during grinding or welding. Always use flood coolant, HEPA dust collection, and appropriate respiratory protection when machining.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What size should I order for a shim application?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The 200 mm × 200 mm square variants are ideal for cutting individual shims. The 200 mm × 500 mm or 1000 mm options are more economical for batch production. Common shim thicknesses are 0.08, 0.1, 0.15, 0.2, and 0.25 mm.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Will this material corrode in outdoor or marine environments?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"C17200 beryllium copper has good resistance to atmospheric corrosion and salt spray. For prolonged seawater immersion, a protective plating is recommended. Avoid ammonia-based cleaners.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"0.08mm×200mm×200mm \/ 1 Pcs","offer_id":52411089486098,"sku":"GLFBZJQGLBZSJ013831x1","price":17.12,"currency_code":"USD","in_stock":true},{"title":"0.1mm×200mm×200mm \/ 1 Pcs","offer_id":52411089518866,"sku":"GLFBZJQGLBZSJ013832x1","price":9.86,"currency_code":"USD","in_stock":true},{"title":"0.15mm×200mm×200mm \/ 1 Pcs","offer_id":52411089551634,"sku":"GLFBZJQGLBZSJ013833x1","price":13.99,"currency_code":"USD","in_stock":true},{"title":"0.2mm×200mm×200mm \/ 1 Pcs","offer_id":52411089584402,"sku":"GLFBZJQGLBZSJ013834x1","price":16.39,"currency_code":"USD","in_stock":true},{"title":"0.25mm×200mm×200mm \/ 1 Pcs","offer_id":52411089617170,"sku":"GLFBZJQGLBZSJ013835x1","price":20.06,"currency_code":"USD","in_stock":true},{"title":"0.3mm×200mm×200mm \/ 1 Pcs","offer_id":52411089649938,"sku":"GLFBZJQGLBZSJ013836x1","price":23.73,"currency_code":"USD","in_stock":true},{"title":"0.4mm×200mm×200mm \/ 1 Pcs","offer_id":52411089682706,"sku":"GLFBZJQGLBZSJ013837x1","price":31.54,"currency_code":"USD","in_stock":true},{"title":"0.5mm×200mm×200mm \/ 1 Pcs","offer_id":52411089715474,"sku":"GLFBZJQGLBZSJ013838x1","price":39.29,"currency_code":"USD","in_stock":true},{"title":"0.6mm×200mm×200mm \/ 1 Pcs","offer_id":52411089748242,"sku":"GLFBZJQGLBZSJ013839x1","price":46.63,"currency_code":"USD","in_stock":true},{"title":"0.8mm×200mm×200mm \/ 1 Pcs","offer_id":52411089781010,"sku":"GLFBZJQGLBZSJ013840x1","price":61.73,"currency_code":"USD","in_stock":true},{"title":"1mm×215mm×200mm \/ 1 Pcs","offer_id":52411089813778,"sku":"GLFBZJQGLBZSJ013841x1","price":80.91,"currency_code":"USD","in_stock":true},{"title":"1.2mm×215mm×200mm \/ 1 Pcs","offer_id":52411089846546,"sku":"GLFBZJQGLBZSJ013842x1","price":97.09,"currency_code":"USD","in_stock":true},{"title":"0.1mm*200mm*1000mm \/ 1 Pcs","offer_id":52411089879314,"sku":"GLFBZJQAMDWJ00001x1","price":47.12,"currency_code":"USD","in_stock":true},{"title":"0.15mm*200mm*1000mm \/ 1 Pcs","offer_id":52411089912082,"sku":"GLFBZJQAMDWJ00002x1","price":58.87,"currency_code":"USD","in_stock":true},{"title":"0.2mm*200mm*1000mm \/ 1 Pcs","offer_id":52411089944850,"sku":"GLFBZJQAMDWJ00003x1","price":81.26,"currency_code":"USD","in_stock":true},{"title":"0.25mm*200mm*1000mm \/ 1 Pcs","offer_id":52411089977618,"sku":"GLFBZJQAMDWJ00004x1","price":92.19,"currency_code":"USD","in_stock":true},{"title":"0.3mm*200mm*1000mm \/ 1 Pcs","offer_id":52411090010386,"sku":"GLFBZJQAMDWJ00005x1","price":121.03,"currency_code":"USD","in_stock":true},{"title":"0.4mm*200mm*1000mm \/ 1 Pcs","offer_id":52411090043154,"sku":"GLFBZJQAMDWJ00006x1","price":146.46,"currency_code":"USD","in_stock":true},{"title":"0.5mm*200mm*1000mm \/ 1 Pcs","offer_id":52411090075922,"sku":"GLFBZJQAMDWJ00007x1","price":199.91,"currency_code":"USD","in_stock":true},{"title":"1.0mm*200mm*1000mm \/ 1 Pcs","offer_id":52411090108690,"sku":"GLFBZJQAMDWJ00008x1","price":398.6,"currency_code":"USD","in_stock":true},{"title":"0.5mm*200mm*500mm \/ 1 Pcs","offer_id":52411090141458,"sku":"GLFBZJQAMDWJ00009x1","price":92.19,"currency_code":"USD","in_stock":true},{"title":"0.6mm*200mm*500mm \/ 1 Pcs","offer_id":52411090174226,"sku":"GLFBZJQAMDWJ00010x1","price":110.28,"currency_code":"USD","in_stock":true},{"title":"0.8mm*200mm*500mm \/ 1 Pcs","offer_id":52411090206994,"sku":"GLFBZJQAMDWJ00011x1","price":146.73,"currency_code":"USD","in_stock":true},{"title":"1.0mm*200mm*500mm \/ 1 Pcs","offer_id":52411090239762,"sku":"GLFBZJQAMDWJ00012x1","price":186.17,"currency_code":"USD","in_stock":true},{"title":"1.2mm*200mm*500mm \/ 1 Pcs","offer_id":52411090272530,"sku":"GLFBZJQAMDWJ00013x1","price":223.38,"currency_code":"USD","in_stock":true},{"title":"1.5mm*200mm*500mm \/ 1 Pcs","offer_id":52411090305298,"sku":"GLFBZJQAMDWJ00014x1","price":278.87,"currency_code":"USD","in_stock":true},{"title":"2.0mm*200mm*500mm \/ 1 Pcs","offer_id":52411090338066,"sku":"GLFBZJQAMDWJ00015x1","price":364.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture3of17_014bccf9-3d10-4296-baeb-5608f85c49c9.jpg?v=1782404031","url":"https:\/\/homediyer.com\/products\/c17200-beryllium-copper-sheet-metal-foil-0-08mm-2mm","provider":"HomeDIYer","version":"1.0","type":"link"}