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When your project demands a metal that combines the conductivity of copper with the spring-back strength of steel, standard sheet stock simply falls short. Engineers, electronics hobbyists, and precision fabricators working on spring contacts, RF shielding, and flex connectors need a material that holds its shape under repeated stress — that's exactly where beryllium copper sheet delivers.
This beryllium copper (BeCu / C17200 alloy) flat sheet is supplied in a 200 x 200 mm (approx. 7.87 x 7.87 in) panel format, with thickness options ranging from 0.1 mm to 1.2 mm (0.004 in to 0.047 in). The sheet features a smooth, mill-finished surface with tight dimensional tolerances suitable for precision cutting, stamping, and forming operations.
Typical applications include DIY spring contact fabrication for battery holders and PCB connectors, electromagnetic interference (EMI) shielding panels for enclosures, custom flex strips for robotics and automation projects, and precision shim stock for mechanical assemblies requiring non-sparking, non-magnetic properties.
BeCu alloy retains its shape after repeated flexing — ideal for spring contacts, clips, and snap-fit components that must cycle thousands of times without fatigue failure.
Beryllium copper offers conductivity typically 15–30% IACS, making it a reliable choice for electrical contacts, bus bars, and connector strips where low resistance matters.
The copper-rich alloy naturally resists oxidation and atmospheric corrosion, maintaining surface integrity in humid environments and extending service life in exposed assemblies.
Eleven thickness options from ultra-thin 0.1 mm foil to a robust 1.2 mm plate give you the exact gauge for your application — from delicate flex circuits to structural shim stock.
Each sheet arrives as a flat 200 x 200 mm (7.87 x 7.87 in) panel, ready for immediate cutting, stamping, or forming without additional preparation steps.
BeCu is inherently non-sparking and non-magnetic, making it a safe choice for use near flammable materials and in applications where magnetic interference must be avoided.
| Material | Beryllium Copper (BeCu, C17200 alloy) |
|---|---|
| Sheet Dimensions | 200 x 200 mm (7.87 x 7.87 in) |
| Thickness Range | 0.1 mm – 1.2 mm (0.004 in – 0.047 in) |
| Available Thicknesses | 0.1 / 0.15 / 0.2 / 0.25 / 0.3 / 0.4 / 0.5 / 0.6 / 0.8 / 1.0 / 1.2 mm |
| Surface Finish | Mill finish, smooth |
| Electrical Conductivity | Typically 15–30% IACS |
| Tensile Strength (aged) | Typically 1,100–1,400 MPa |
| Hardness | See variant options |
| Temper | See variant options |
| Quantity per Order | 1 Piece |
| Item Type | Flat Sheet / Foil / Plate |
For light-duty spring contacts and battery terminals, 0.1–0.2 mm is typically sufficient, providing the flex and conductivity needed without excessive force. For heavier-duty clips or terminals that must handle higher current or repeated mechanical stress, 0.3–0.5 mm offers a better balance of spring-back and durability.
Yes. Aged (precipitation-hardened) BeCu has tensile strength typically in the range of 1,100–1,400 MPa, which is comparable to many tool steels. The 0.8–1.2 mm thickness options are well-suited for precision shim stock, spacers, and load-bearing flex components in mechanical assemblies.
BeCu has good resistance to atmospheric corrosion and oxidation due to its copper-rich composition. It performs reliably in humid indoor environments and moderate outdoor exposure. For highly corrosive environments (salt spray, chemical exposure), consider applying a protective coating or plating for extended service life.
Yes. Beryllium copper can be soldered using standard copper-compatible fluxes and solders, and it can be brazed with silver-based brazing alloys. Welding is possible but requires specialist equipment and precautions due to the beryllium content — always follow appropriate safety guidelines when machining or heating BeCu.
Yes, the 200 x 200 mm panel can be processed by CNC laser cutters, waterjet systems, and mechanical shearing. Thinner gauges (0.1–0.3 mm) are also suitable for hand-cutting with sharp metal snips. Always use appropriate dust and fume controls when machining beryllium copper.
For EMI and RF shielding applications, thinner sheets (0.1–0.3 mm) are commonly used as they provide effective shielding at lower frequencies while remaining lightweight and easy to form into enclosure panels or gaskets. For higher-frequency shielding or structural shield housings, 0.5–1.0 mm provides added rigidity.
Standard copper sheet (C11000) is very soft and ductile with excellent conductivity but minimal spring-back. Beryllium copper (C17200) is a copper alloy that, after age-hardening, achieves much higher strength and hardness while retaining good conductivity. This makes BeCu the preferred choice wherever both electrical performance and mechanical resilience are required simultaneously.
