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When a 0.3mm foil is too flexible for your application but a thicker plate is overkill, a 0.4mm brass sheet roll hits the practical middle ground. Machinists fitting tight shims, electronics builders fabricating contact springs, and model engineers cutting structural inlays all benefit from a gauge that holds its form under moderate load without requiring heavy tooling to cut or bend.
This brass sheet roll is 0.4mm thick and supplied in 1000mm (39.4 in) lengths. Width options span from 5mm (0.20 in) to 400mm (15.75 in) across 23 variants, so you can select exactly the coverage your project requires. The alloy is a standard copper-zinc brass composition, offering a warm golden finish with good ductility, moderate tensile strength, and reliable solderability.
Typical applications include precision shim stock for bearing housings and machine tool adjustments, spring-contact strips in low-current electrical assemblies, decorative inlays and banding in furniture and woodworking, and structural facing strips in scale model construction. The 0.4mm gauge is also well-suited as a thin brass foil strip for EMI gaskets where slightly more mechanical rigidity is needed compared to thinner foils.
| Material | Brass (copper-zinc alloy) |
|---|---|
| Thickness | 0.4mm (0.016 in) |
| Width Range | 5mm – 400mm (0.20 in – 15.75 in) |
| Length | 1000mm (39.4 in) per piece |
| Finish | Mill finish, warm golden tone |
| Tensile Strength | Typically 300–500 MPa (varies by alloy temper) |
| Electrical Conductivity | Approx. 28% IACS (typical for brass) |
| Workability | Hand-bendable, shearable, solderable, brazeable |
| Available Widths | See variant options |
| Weight per Piece | See variant options |
The 0.4mm strip is approximately 33% thicker than the 0.3mm variant, which translates to noticeably more stiffness and resistance to deflection under load. Choose 0.4mm when you need the strip to hold its shape under light mechanical pressure — for example, as a shim, a spring contact, or a structural inlay. Choose 0.3mm when maximum flexibility and ease of forming are the priority, such as for wrapping, lining, or very tight-radius bends.
Select a width that matches or slightly exceeds the widest dimension of your target area. For shims and spacers, choose the narrowest width that fully covers the joint. For shielding panels or decorative banding, measure the opening and pick the next width up. All variants share the same 0.4mm thickness and 1000mm length — only the width differs.
Yes. At 0.4mm, the strip cuts cleanly with heavy-duty scissors, tin snips, or a sharp craft knife against a metal ruler. For long, straight cuts on wider strips, a guillotine-style metal shear or a CNC router gives the cleanest edge. Avoid scoring and snapping — shear or cut in a single pass for best results.
Yes. Brass solders readily with standard rosin-core or acid-core solder and an appropriate flux. For brazing, use a brass-compatible brazing rod and ensure the surface is clean and oxide-free before heating. The 0.4mm gauge is more tolerant of torch heat than thinner foils, but avoid prolonged exposure in a single spot to prevent warping.
Brass naturally develops a patina in humid or outdoor environments. For indoor applications — electronics, furniture inlays, model making — the surface remains stable for years without treatment. To maintain the bright golden finish, apply a thin coat of clear lacquer or metal wax after cleaning. For outdoor or marine environments, a protective coating is recommended.
Yes — 0.4mm brass shim stock is a common choice for adjusting bearing clearances, aligning machine tool components, and filling gaps in mechanical assemblies. The consistent gauge ensures repeatable results. If you need a stack of shims to reach a specific total thickness, multiple pieces can be layered without adhesive for easy adjustment.
Brass offers a practical balance of workability, moderate conductivity, and corrosion resistance at a competitive cost. Copper is softer and more conductive but more expensive and prone to surface oxidation. Stainless steel is harder and more corrosion-resistant but significantly more difficult to cut, bend, and solder. For most DIY, craft, and light engineering applications, brass is the most versatile choice.
