JIS G3106 SM490A hot rolled steel plate is a high-strength structural steel material defined under the Japanese Industrial Standard (JIS G3106). This steel plate offers excellent mechanical performance, including high tensile strength, good toughness, and excellent weldability.
Its ease of processing, forming, and machining makes it ideal for a wide range of engineering applications.
Chemical Composition (%):
| Element | Max Content (%) |
|---|---|
| Carbon (C) | 0.20 |
| Manganese (Mn) | 1.60 |
| Silicon (Si) | 0.55 |
| Phosphorus (P) | 0.035 |
| Sulfur (S) | 0.035 |
This balanced chemical composition ensures high strength, good toughness, and excellent weldability, while reducing the risk of cracking during fabrication.
Mechanical Properties:
| Property | Value |
|---|---|
| Tensile Strength (MPa) | 400–610 |
| Yield Strength (MPa) | 295 |
| Elongation (%) | ≥17 |
| Impact Test Temperature (°C) | +20, 0, -20 |
These mechanical properties make SM490A steel suitable for load-bearing structural applications, where safety and durability are critical.
Specifications:
| Parameter | Range |
|---|---|
| Thickness | 0.2–4 mm |
| Width | 600–2000 mm |
| Length | 1200–6000 mm |
Applications
SM490A steel plates are widely used in:
Bridge Construction: Structural components, girders, and supports.
Highway Engineering: Road barriers, guardrails, and other infrastructure elements.
General Engineering Projects: Construction of buildings, heavy machinery, and industrial frameworks.
SM490A steel plates are typically supplied in control-rolled delivery condition, ensuring consistent mechanical properties throughout the thickness.
