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When your build calls for a flat steel blank that arrives ready to weld, drill, or grind — without the waste and setup of cutting from full sheet stock — these Q235 mild steel laser cut plates deliver exactly that. Fabricators prototyping fixtures, hobbyists building brackets, and makers needing a reliable ferrous base plate all face the same bottleneck: sourcing correctly sized blanks in small quantities. These plates solve that problem with clean laser-cut edges and a choice of size and thickness combinations ordered to your exact need.
Each Q235 mild steel laser cut plate is produced from Q235 (equivalent to A3 / S235JR) low-carbon structural steel — a widely specified grade valued for consistent mechanical properties and excellent weldability. Available in two shapes: square blanks and round discs. Square sizes range from 50 × 50 mm (approx. 2 × 2 in) to 300 × 300 mm (approx. 11.8 × 11.8 in); round diameters from 50 mm (approx. 2 in) to 300 mm (approx. 11.8 in). Thickness options span 1 mm to 10 mm (approx. 0.04 in to 0.39 in). Pack quantities of 1, 2, or 5 pieces are available depending on the variant selected.
Typical applications include custom steel base plates for machinery feet and levelling pads, round blanks for DIY flange fabrication and pipe end caps, square plates for structural gussets and welding practice, and laser-cut mild steel blanks for metal art and signage projects requiring precise flat stock in small runs.
| Material Grade | Q235 / A3 / S235JR |
|---|---|
| Material Type | Low-carbon mild steel |
| Shape | Square or Round (see variant options) |
| Sheet Size (Square) | 50×50 mm, 100×100 mm, 150×100 mm, 150×150 mm, 200×200 mm, 300×300 mm |
| Diameter (Round) | 50 mm, 100 mm, 150 mm, 200 mm, 300 mm |
| Thickness | 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, 10 mm |
| Quantity per Pack | 1, 2, or 5 pieces (see variant options) |
| Cutting Method | Laser cut |
| Tensile Strength (typical) | 370–500 MPa |
| Yield Strength (typical) | ≥ 235 MPa |
| Surface Finish | Mill scale (as-cut, natural grey/black) |
| Weldability | Excellent — MIG, TIG, and stick welding compatible |
| Corrosion Resistance | Low (mild steel — surface treatment recommended for outdoor use) |
| Machinability | Good — drills, taps, mills, and grinds with standard HSS or carbide tooling |
Choose the square variant for base plates, gussets, mounting brackets, and any application where a flat rectangular footprint is needed. Choose the round variant for flanges, pipe end caps, circular decorative pieces, or any application requiring a disc shape. Both are cut from the same Q235 mild steel grade with identical mechanical properties.
For light-duty brackets and decorative metalwork, 1–2 mm is typically sufficient. For structural gussets and load-bearing base plates, 3–6 mm is a common range. For heavy machinery feet or high-load applications, 8–10 mm provides greater rigidity. When in doubt, consult your project's load and stress requirements or contact us to confirm the right thickness for your application.
Q235 (equivalent to S235JR) is a low-carbon structural steel with a typical yield strength of ≥ 235 MPa and tensile strength of 370–500 MPa. It is widely used in general structural fabrication, machinery frames, and construction. For highly stressed or safety-critical structural applications, consult a qualified engineer to confirm suitability for your specific load case.
Q235 mild steel will oxidise when exposed to moisture. The as-cut mill scale surface offers minimal corrosion protection on its own. For outdoor or humid environments, apply a rust-inhibiting primer followed by paint or powder coat after light sanding or shot blasting. For indoor dry applications, a light oil wipe is often sufficient for short-term storage and handling.
Yes. Q235 / S235JR is one of the most weldable mild steel grades and is compatible with MIG, TIG, and stick (SMAW) welding. For the cleanest welds, lightly grind or wire-brush the mill scale from the weld zone before welding. No pre-heating is required for standard thicknesses up to approximately 10 mm at ambient temperatures.
Laser cutting produces significantly cleaner edges than plasma or saw cutting, with minimal burr. However, as with all cut metal, edges and corners can still be sharp. Wearing cut-resistant gloves when handling is recommended, especially with thinner gauges (1–2 mm). Light deburring with a file or flap disc is advisable before handling bare-handed.
Yes. Q235 mild steel machines readily with standard HSS or carbide tooling. It drills, taps, mills, and grinds without difficulty. Use appropriate cutting fluid when drilling thicker sections (4 mm and above) to extend tool life and improve hole quality and finish.
These are equivalent designations for the same grade of low-carbon structural steel under different standards: Q235 is the GB standard designation, A3 is an older designation for the same material, and S235JR is the European EN 10025 equivalent. All refer to a mild steel with similar chemical composition and mechanical properties, making them interchangeable for most general fabrication purposes.
