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ss400 s235 s275jr black mild checker steel sheet / mild steel plate
sheet
We supply a comprehensive range of hot-rolled mild steel plates and checker sheets, featuring popular and reliable grades such as SS400 (JIS G3101), S235JR, and S275JR (EN 10025-2). These materials are the backbone of modern construction and industrial fabrication due to their excellent strength, formability, and outstanding weldability. Our checker steel sheets (also known as tread plates) provide an ideal anti-slip surface for flooring, stairs, and walkways. At Asia Metal, we deliver both standard and custom solutions. We can cut to any size and specification, ensuring you receive a product perfectly tailored to your project's demands.
| Material Grade | SS400 (JIS G3101) / S235JR / S275JR (EN 10025-2) |
|---|---|
| Available Forms | Flat Mild Steel Plate & Black Mild Checker (Tread) Steel Sheet |
| Delivery Time | 7-14 working days |
| Customizable Dimensions | Thickness, Width, and Length are fully customizable. |
| Surface Finish | Black (standard hot-rolled, self-color), non-coated. |
| Certifications | ISO 9001, Mill Test Certificate (MTC) available for all products. |
| Grade | Carbon (C) | Silicon (Si) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) |
|---|---|---|---|---|---|
| SS400 | - | - | - | 0.050 | 0.050 |
| S235JR | 0.17 | - | 1.40 | 0.035 | 0.035 |
| S275JR | 0.21 | - | 1.50 | 0.035 | 0.035 |
| Grade | Yield Strength (min) | Tensile Strength | Elongation % (min) |
|---|---|---|---|
| SS400 | 245 MPa | 400 - 510 MPa | 21% |
| S235JR | 235 MPa | 360 - 510 MPa | 26% |
| S275JR | 275 MPa | 410 - 560 MPa | 23% |
A standard steel plate has a flat, smooth surface. A checker plate, or tread plate, has a raised, embossed pattern (like diamonds or tear drops) on one side. This pattern provides excellent slip resistance, making it the ideal choice for industrial flooring, ramps, stair treads, and truck bed liners where safety is a priority.
In many general applications, yes. SS400 (a Japanese JIS standard) and S235JR (a European EN standard) have very similar mechanical properties and chemical compositions. They are often considered functional equivalents for general structural purposes. However, for projects with strict code compliance, you must adhere to the specific grade mentioned in the engineering drawings.
You should choose S275JR when your application requires higher strength. S275JR has a higher minimum yield strength (275 MPa) compared to S235JR (235 MPa) and SS400 (245 MPa). This makes it suitable for structural components that will be under greater stress or load, allowing for the design of stronger yet lighter structures.
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