235 carbon steel plate is a low-alloy, high-ductility steel plate known for its excellent weldability and toughness. It is widely used in general structural applications, building frames, welded components, and light machinery.
Product Parameters
|
Steel Grade |
235 Carbon Steel Plate (Q235D series) |
|
Chemical Composition |
C ≤ 0.17 %, Mn ≤ 0.80 %, Si ≤ 0.30 % |
|
Minimum Yield Strength |
≥ 235 MPa (thickness ≤ 16 mm) |
|
Typical Tensile Strength |
375–460 MPa |
|
Minimum Elongation |
≥ 21 % (depending on plate thickness) |
|
Typical Thickness & Dimensions |
Thickness up to ~600 mm, Width up to ~4200 mm, Length up to ~18000 mm |
|
Key Features |
Good weldability, solid toughness, cost-effective carbon structural steel |
|
Typical Applications |
General structural components, building frames, welded structures, light machinery |
Welding Method Guidelines for 235 Carbon Steel Plate
Suitable Welding Processes
Recommended techniques include SMAW (stick welding), GMAW/MIG, and TIG welding.
Use compatible filler materials to ensure strong, defect-free joints.
Pre‑Weld and Interpass Control
Apply preheating (e.g., 80–120 °C) for thicker plates or cold environments to prevent cracking.
Control interpass temperatures and heat input to manage the heat-affected zone and minimize distortion.
Post‑Weld Considerations
Allow gradual cooling to avoid residual stresses or cracking.
Inspect welds for defects such as porosity or undercut and perform stress-relief treatments if needed.
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