Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Whether you're patching a rusted panel, fabricating a bracket, or building a custom enclosure, sourcing flat steel sheet in the exact size you need can be a frustrating bottleneck. These mild steel sheet metal square plate panels are designed for makers, fabricators, and DIY enthusiasts who need reliable flat stock without the waste of full-sheet orders.
Each panel is cut from low-carbon mild steel (equivalent to S235/A36 grade), available in thicknesses from 0.6mm to 6mm (approximately 0.024" to 0.236") and sizes ranging from 50×50mm (approx. 2"×2") up to 400×300mm (approx. 15.7"×11.8"). Panels are supplied with a mill-finish surface, square-cut edges, and consistent flatness across the sheet face.
Typical applications include automotive bodywork repair panels, HVAC duct fabrication, electrical enclosure blanking plates, workshop jig and fixture plates, and general structural mild steel sheet metalwork. Long-tail use cases include mild steel sheet metal for welding practice, iron sheet cut to size for shelving brackets, and flat steel plate for custom furniture frames.
| Material | Low-carbon mild steel (S235 / A36 equivalent) |
|---|---|
| Surface Finish | Mill finish (natural scale) |
| Thickness Range | 0.6mm – 6mm (0.024" – 0.236") |
| Size Range | 50×50mm – 400×300mm |
| Edge Type | Shear-cut, square edges |
| Flatness | See variant options |
| Tensile Strength | Typically 360–510 MPa (S235 grade) |
| Yield Strength | Typically ≥235 MPa (S235 grade) |
| Corrosion Resistance | Bare steel — primer or coating recommended for outdoor use |
| Pack Quantity | 1, 2, 4, or 8 pieces (see variant options) |
| Weight per Panel | See variant options |
Thinner panels (0.6mm–1mm) suit light-duty applications such as decorative panels, HVAC ducting, and thin-gauge bodywork. Mid-range thicknesses (1.5mm–3mm) are suited to structural brackets, enclosures, and general fabrication. Thicker panels (4mm–6mm) are appropriate for load-bearing plates, heavy-duty fixtures, and applications requiring significant rigidity. If in doubt, select one step thicker than your minimum estimate.
Yes. Low-carbon mild steel is one of the most weldable ferrous metals available. These panels are compatible with MIG, TIG, and stick (MMA) welding processes. For thinner gauges (0.6mm–1mm), use a lower amperage setting and consider tack-welding to minimise distortion. Thicker panels (3mm+) may benefit from a slight bevel on butt joints for full penetration.
Mild steel will oxidise when exposed to moisture and oxygen. For indoor use in dry environments, the mill-finish surface is generally adequate for short-term storage and use. For outdoor, high-humidity, or long-term applications, apply a rust-inhibiting primer followed by a topcoat (spray paint, epoxy, or powder coat). Light sanding or a phosphoric acid wash before priming improves adhesion significantly.
Eleven size options are available, from 50×50mm (approx. 2"×2") up to 400×300mm (approx. 15.7"×11.8"). Select your size from the Size dropdown above. If your project requires a size not listed, consider ordering the next size up and trimming to your final dimension using an angle grinder, jigsaw with metal blade, or plasma cutter.
Panels are shear-cut to produce square edges with minimal burring. However, as with all cut metal, edges may have minor sharpness. We recommend wearing cut-resistant gloves when handling, and using a file or deburring tool to dress any sharp corners before use in finished assemblies.
Yes. Mild steel drills and taps readily with standard HSS drill bits and taps. Use a cutting fluid or light machine oil to extend tool life and improve hole quality. For panels 0.6mm–1mm thick, a step drill or sharp HSS bit at moderate speed prevents tearing. For panels 3mm and above, a centre punch mark before drilling helps maintain accuracy.
Panels are available in packs of 1, 2, 4, or 8 pieces depending on the size and thickness combination selected. Multi-piece packs offer a lower per-panel cost and are useful when you need spares, are working on multiple identical assemblies, or want to practice cuts and welds before committing to your final workpiece.
