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When your project demands a reliable, weldable flat steel sheet that won't let you down mid-build, sourcing the right thickness and size in one place is half the battle. Whether you're a hobbyist metalworker, a fabrication shop, or a structural DIYer, these S235 mild steel plates give you a consistent, machinable base material ready to cut, drill, weld, or bend to spec.
Each plate is cut from S235-grade low-carbon mild steel — a widely used structural steel with a minimum yield strength of 235 MPa. Sizes range from 50 × 50 mm (approx. 2" × 2") up to 300 × 300 mm (approx. 11.8" × 11.8"), with thickness options spanning 0.5 mm to 5 mm (approx. 0.02" to 0.20"). The flat-rolled surface finish is mill-scale or lightly deburred depending on thickness.
Typical applications include bracket fabrication and gusset plates for light structural frames, sheet metal repair patches for automotive bodywork and enclosures, and base plates or shim stock for machinery alignment and DIY metalworking projects requiring precise flat steel sheet stock.
Conforms to EN 10025 S235 specification with a minimum yield strength of 235 MPa — dependable for light structural brackets, frames, and load-bearing plates.
Available from 50 × 50 mm up to 300 × 300 mm across seven thickness steps (0.5 mm, 0.8 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 5 mm) — one listing covers most flat steel sheet needs.
Low carbon content makes S235 straightforward to weld with MIG, TIG, or stick processes, and easy to drill, tap, or machine without specialist tooling.
Mill-rolled flat surface ensures consistent thickness tolerance across the plate, reducing prep time when used as shim stock, base plates, or precision spacers.
Clean, deburr, and prime the surface for powder coating, epoxy paint, or zinc primer — the low-alloy composition accepts most metal finishing systems without adhesion issues.
Choose from 1, 2, 3, 6, or 8-piece packs depending on your project quantity — ideal for prototyping single pieces or stocking up for repeat fabrication runs.
| Material Grade | S235 (EN 10025) Low-Carbon Mild Steel |
|---|---|
| Minimum Yield Strength | 235 MPa |
| Tensile Strength | 360–510 MPa (typical for S235) |
| Carbon Content | ≤ 0.17% (typical S235 max) |
| Surface Finish | Mill-scale / lightly deburred flat-rolled |
| Available Sizes (W × L) | 50×50, 100×100, 100×150, 100×200, 150×150, 200×200, 200×300, 300×300 mm |
| Available Thickness | 0.5 mm, 0.8 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 5 mm |
| Pack Quantities | 1, 2, 3, 6, or 8 pieces (see variant options) |
| Weldability | Good — suitable for MIG, TIG, and stick welding |
| Machinability | Good — drillable, tappable, plasma/laser cuttable |
| Corrosion Resistance | Low (bare steel — surface treatment recommended) |
| Weight per Piece | See variant options |
| Thickness Tolerance | See variant options |
For light sheet metal work, enclosures, or shims, 0.5–1 mm is typically sufficient. For structural brackets, gussets, or base plates that carry load, 2–5 mm is more appropriate. As a general rule, thicker plates offer greater rigidity and load capacity but are heavier and require more effort to cut and weld.
S235 is a European structural steel grade defined by EN 10025. The "235" refers to its minimum yield strength of 235 MPa. It is a low-carbon, general-purpose mild steel widely used in construction, fabrication, and engineering applications where moderate strength and good weldability are required.
Yes — S235 mild steel is bare carbon steel with no inherent corrosion resistance. For outdoor or humid environments, surface treatment is strongly recommended: clean the surface, apply a metal primer, then finish with paint, powder coat, or a zinc-based coating. For indoor or dry applications, a light oil coating is often sufficient for short-term storage.
Yes. S235 mild steel is one of the most weld-friendly structural steels available. It is compatible with MIG (GMAW), TIG (GTAW), and stick (SMAW) welding processes using standard mild steel filler wire or electrodes (e.g., ER70S-6 wire or E6013 rods). No pre-heating is typically required for thicknesses under 3 mm.
Yes. S235 mild steel cuts cleanly with plasma cutters, laser cutters, angle grinders with cutting discs, and metal-cutting jigsaws or bandsaws. For thinner plates (0.5–1 mm), tin snips or aviation shears can also be used for straight cuts.
Order the next size up from your required dimension and cut to size. For example, if you need a 90 × 90 mm plate, order the 100 × 100 mm variant and trim it down. All listed sizes are the as-cut plate dimensions.
Yes, the thinner variants (0.5 mm and 0.8 mm) are well-suited for patch repairs on vehicle body panels. They can be shaped, welded, and finished to match surrounding panels. Note that automotive body steel is typically coated — you will need to prime and paint the repair area after welding.
