S235jr steel sheet 4320 boat sheet A283 A387 ms mild alloy carbon iron sheets
Availability: In Stock
Introduce:High tensile strength Anti-corrosion High temperature resistence High quality
Min.Order Quantity: 1 Ton
Payment Terms: L/C,T/T,Western Union
S235JR (A283 / A387) 4320 Boat Sheet – Mild‑Alloy Carbon Steel
The S235JR 4320 boat sheet is a high‑quality mild‑alloy carbon steel plate that conforms to ASTM A283, ASTM A387 and EN 10025‑2 standards. It is widely used in the marine, ship‑building, pressure‑vessel and general engineering sectors for components such as hull plating, bulkheads, deck structures, tanks, pump casings, and structural frames.
Baobin Company offers flexible customization of dimensions, thicknesses, surface finishes and cutting lengths to meet the exact requirements of your project.
Key Technical Data & Service Information
| Parameter | Value / Options |
|---|---|
| Yield Strength (σy) | >≈ 235 MPa (34 ksi) |
| Tensile Strength (σu) | 375 – 460 MPa (54 – 67 ksi) |
| Elongation @ 200 mm | > 20 % |
| C | ≤ 0.22 % |
| Mn | ≤ 1.40 % |
| Si | ≤ 0.55 % |
| P | ≤ 0.025 % |
| S | ≤ 0.025 % |
| Standard Thickness | 3 mm – 200 mm (custom thickness available) |
| Standard Width | 1000 mm – 2500 mm (custom width on request) |
| Standard Length | 2000 mm – 6000 mm (cut‑to‑length service) |
| Typical Lead Time | 7 – 14 working days (stock) / 14 – 28 days for custom orders |
| Minimum Order Quantity | 1 ton (flexible for prototype runs) |
| Surface Condition | Hot‑rolled, normalised, or cold‑rolled (as required) |
| Certificates | ISO 9001, ISO 14001, CE Mark, CEK — EN 10025‑2, ASTM A283/A387, SGS & Bureau Veritas test reports |
Frequently Asked Questions
- Q1: Can I get the plate in a length longer than 6 m?
- Yes. Baobin Company offers on‑site welding or splicing services to produce continuous lengths up to 12 m based on your specifications.
- Q2: Is the material suitable for welding marine‑grade structures?
- Absolutely. The S235JR 4320 sheet has excellent weldability with all conventional welding processes (MIG, TIG, SMAW). Pre‑heating is usually not required for thicknesses ≤ 30 mm.
- Q3: What testing reports are provided with each shipment?
- Every batch is accompanied by a Mill Test Certificate (MTC), chemical analysis, and mechanical test results. Additional third‑party certification (SGS, BV) can be requested at no extra charge.
- Q4: Do you offer surface‑treatment options?
- Yes. We can supply plates with shot‑blasting, galvanising, epoxy coating, or custom paint finishes according to your project requirements.
