T2 Solid Copper Discs Blanks Metal Round Sheets Dia 10-200mm Thick 0.5mm - 4mm

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T2 Solid Copper Discs Blanks — Precision-Cut Round Sheets for Metalworking & DIY Projects When your project demands reliable electrical conductivity, consistent thickness, and a cl ean edge right out of the package, sourcing the right copper disc blank can be frustrating. Hobbyists, makers, electronics technicians, and small-shop fabricators all face the same challenge: finding copper rounds that are truly flat, accurately sized, and ready to cut, stamp, or solder without extra prep work. These T2 solid copper disc blanks are designed for exactly that use case. Each disc is machined from T2-grade (≥99.9% Cu) electrolytic copper, offering excellent thermal and electrical conductivity. Available in outer diameters from 10 mm (0.39 in) to 200 mm (7.87 in) and thicknesses from 0.5 mm (0.020 in) to 5 mm (0.197 in), the range covers the most common sizes needed for both light-gauge and structural copper work. Listings are sold in packs of 1, 2, or 4 pieces depending on the size selected. Typical applications include DIY heat spreaders and thermal interface shims for electronics cooling, custom electrical contact pads and bus bar blanks, jewelry and craft metalworking where a pre-cut copper round saves layout time, and decorative inlay or engraving stock for woodworking and leathercraft projects. 🔧 Compatibility: Suitable for soldering, brazing, machining, stamping, and chemical etching. Compatible with standard copper-rated cutting tools, drill bits, and CNC routers. Works with most flux and solder formulations rated for copper. ✅ Key Features of These T2 Copper Disc Blanks ⚡High Conductivity T2 Copper — ≥99.9% Cu electrolytic copper delivers low electrical resistance and strong thermal transfer, making these discs reliable for both electrical and heat-management applications. 📐Wide Size Range — Outer diameters from 10 mm to 200 mm and thicknesses from 0.5 mm to 5 mm let you match the exact blank to your project without custom cutting from sheet stock. ✂️Clean-Cut Edges — Discs are sheared or machined to a consistent diameter with no burrs that would require extensive deburring before use in precision assemblies. 📦Flexible Pack Quantities — Choose 1, 2, or 4 pieces per order to match your project quantity and reduce waste, with pricing scaled to the size and thickness selected. 🔩Machinable & Formable — T2 copper's ductility allows drilling, turning, stamping, and bending without cracking, even at thinner gauges (0.5–1 mm). 🛡️Corrosion-Resistant Surface — Copper's natural oxide layer provides baseline corrosion resistance in indoor and low-humidity environments; discs can be coated, lacquered, or left bare depending on the application. 📐 Technical Specifications — T2 Copper Round Disc Blanks Material T2 Electrolytic Copper (≥99.9% Cu) Shape Round disc / circle blank Outer Diameter Range 10 mm – 200 mm (0.39 in – 7.87 in) Thickness Range 0.5 mm – 5 mm (0.020 in – 0.197 in) Diameter Tolerance See variant options Thickness Tolerance See variant options Surface Finish Mill finish (bare copper, may show natural oxidation) Electrical Conductivity ~58 MS/m (IACS 100%) Thermal Conductivity ~385 W/(m·K) Hardness Typically soft-annealed to half-hard (40–80 HV) Pack Quantity 1, 2, or 4 pcs (see variant options) Application Electrical contacts, heat shims, crafts, stamping, engraving ❓ Frequently Asked Questions How do I choose the right diameter and thickness for my project? Start with the outer diameter your application requires — for heat spreaders, match the diameter to your component footprint; for craft blanks, choose the disc size closest to your finished piece. For thickness, thinner discs (0.5–1 mm) suit stamping, engraving, and flexible shim applications, while thicker discs (2–5 mm) are better for structural contacts, bus bars, or turned parts. If you are unsure, contact us to confirm before ordering. What is T2 copper and how does it differ from other copper grades? T2 is a designation for electrolytic tough-pitch copper with a minimum purity of 99.9% Cu. It offers near-maximum electrical and thermal conductivity compared to lower-purity alloys. Unlike brass or bronze, T2 copper contains no significant zinc or tin, making it the preferred choice for electrical contacts, heat sinks, and applications where conductivity is the primary requirement. Are these discs strong enough for structural or load-bearing use? T2 copper in the soft-annealed to half-hard condition has a tensile strength of approximately 200–280 MPa. It is suitable for light structural applications such as spacers, shims, and contact pads, but is not recommended for high-load mechanical fastening or impact-prone environments without additional support. For thicker discs (3–5 mm), the material provides more rigidity and is appropriate for machined components. Will the copper surface corrode or tarnish over time? Copper naturally forms a thin oxide layer (patina) when exposed to air and moisture. In dry indoor environments this process is slow and does not affect conductivity significantly. For applications requiring a bright finish or long-term corrosion resistance, we recommend applying a clear lacquer, anti-tarnish coating, or tin plating after machining. For outdoor or high-humidity use, a protective finish is strongly advised. Can I solder or braze directly to these discs? Yes. T2 copper is one of the most solderable metals available. Use a rosin-based or no-clean flux with standard tin-lead or lead-free solder for electronics work. For higher-temperature joints, silver brazing alloys with copper-rated flux work well. Clean the surface with isopropyl alcohol or fine abrasive before soldering to remove any oxide layer for the best joint quality. What tools do I need to cut or drill these copper discs? Thin discs (0.5–1.5 mm) can be cut with aviation snips, a jeweler's saw, or a laser cutter. Thicker discs (2–5 mm) are best machined on a lathe or milled with carbide-tipped tooling. For drilling, use sharp HSS or cobalt drill bits at moderate speed with cutting oil to prevent work-hardening and bit wear. Copper is ductile and tends to grab, so a center punch and pilot hole are recommended before drilling larger diameters. How do I decide between ordering 1, 2, or 4 pieces? The quantity options are designed to match common project needs. Order 4 pieces for small diameters (10 mm) where you may need spares for prototyping or craft work. Order 2 pieces for mid-range sizes (20–80 mm) where you want a backup. For large discs (100–200 mm), a single piece is typically sufficient for most projects. Bulk requirements beyond the listed quantities — contact us for a custom quote. 🛒 Select your thickness, diameter, and quantity above, then add to cart. { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "How do I choose the right diameter and thickness for my project?", "acceptedAnswer": { "@type": "Answer", "text": "Start with the outer diameter your application requires. For heat spreaders, match the diameter to your component footprint; for craft blanks, choose the disc size closest to your finished piece. 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It is suitable for light structural applications such as spacers, shims, and contact pads, but is not recommended for high-load mechanical fastening or impact-prone environments without additional support." } }, { "@type": "Question", "name": "Will the copper surface corrode or tarnish over time?", "acceptedAnswer": { "@type": "Answer", "text": "Copper naturally forms a thin oxide layer (patina) when exposed to air and moisture. In dry indoor environments this process is slow and does not affect conductivity significantly. For applications requiring a bright finish or long-term corrosion resistance, apply a clear lacquer, anti-tarnish coating, or tin plating after machining." } }, { "@type": "Question", "name": "Can I solder or braze directly to these discs?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. T2 copper is one of the most solderable metals available. Use a rosin-based or no-clean flux with standard tin-lead or lead-free solder for electronics work. For higher-temperature joints, silver brazing alloys with copper-rated flux work well. Clean the surface before soldering to remove any oxide layer." } }, { "@type": "Question", "name": "What tools do I need to cut or drill these copper discs?", "acceptedAnswer": { "@type": "Answer", "text": "Thin discs (0.5–1.5 mm) can be cut with aviation snips, a jeweler's saw, or a laser cutter. Thicker discs (2–5 mm) are best machined on a lathe or milled with carbide-tipped tooling. For drilling, use sharp HSS or cobalt drill bits at moderate speed with cutting oil." } }, { "@type": "Question", "name": "How do I decide between ordering 1, 2, or 4 pieces?", "acceptedAnswer": { "@type": "Answer", "text": "Order 4 pieces for small diameters (10 mm) where you may need spares for prototyping or craft work. Order 2 pieces for mid-range sizes (20–80 mm) where you want a backup. For large discs (100–200 mm), a single piece is typically sufficient for most projects." } } ] } Show more