Flat Bar Solid Metal Strip -HSS- Metal Plate Trim 2mm 3mm Thickness 300mm Long

Use 2 mm when weight savings matter or when the strip will be used as trim, edge protection, or a light-duty bracket. Choose 3 mm when the bar will carry shear loads, act as a structural gusset, or be drilled with larger-diameter holes — the extra material prevents the web from cracking around the hole.

Yes. The standard 2 mm and 3 mm variants cut cleanly with a standard metal cutting disc on an angle grinder or a cold saw. Clamp the bar securely in a vise before cutting. The hardened 130 mm variant requires a diamond or CBN cutting wheel — a standard abrasive disc will glaze and overheat.

HSS flat bar in mill-finish condition is not inherently corrosion-resistant. For outdoor or damp environments, apply a rust-inhibiting primer and topcoat, or use a cold galvanizing compound after cutting and drilling. If your application requires inherent corrosion resistance, consider a stainless steel flat bar instead.

For light-duty shelf brackets (loads up to ~10 kg), a 20–30 mm wide × 2 mm thick bar is typically sufficient. For heavier shelving or wall-mount plates that will be bolted through masonry, 40–60 mm wide × 3 mm thick provides the bearing area needed around the bolt holes. Always verify your load calculations before installation.

HSS can be welded, but it requires pre-heating (typically 300–450 °C) and slow post-weld cooling to avoid cracking in the heat-affected zone. For most DIY bracket and repair applications where welding is needed, mild steel flat bar is easier to work with. If you specifically need the hardness of HSS in the finished assembly, consult a welding engineer for the correct procedure.

The standard variants are supplied in an annealed or normalized condition — they are machinable with HSS tooling and can be bent with moderate force. The hardened 130 × 300 mm variant has been heat-treated to increase surface hardness, making it suitable for wear plates, guide rails, and cutting jigs where abrasion resistance is the priority. It is significantly harder to cut and drill and requires carbide tooling.

Each variant listing represents one (1) individual flat bar strip. If you need multiple pieces of the same size, adjust the quantity in your cart before checkout.