Q345 Alloy HSLA High Strength Low Alloy Steel 470 - 630 MPa Tensile Strength
| Attribute | Value |
|---|---|
| Name | Q345 Alloy |
| Tensile Strength | 470-630 MPa |
| Yield Strength | ≥345 MPa |
| Elongation | ≥21% |
| Density | 7.85 g/cm³ |
| Hardness | HRB 80-95 |
| Weldability | Excellent |
| Ductility | Good |
| Surface Finish | Smooth |
| Applications | Construction, heavy machinery, pipelines, automotive parts, metal fabrication |
Q345 Alloy is a high-strength low-alloy (HSLA) steel known for its superior mechanical properties and versatility, making it suitable for demanding structural applications. This steel grade provides enhanced strength, toughness, and weldability while maintaining good formability and ductility.
- Carbon (C): 0.12-0.20% - Provides increased strength and hardness while maintaining good weldability and ductility.
- Manganese (Mn): 1.00-1.60% - Enhances tensile strength and hardness, improving toughness and wear resistance.
- Silicon (Si): ≤0.50% - Aids in deoxidation during steelmaking, resulting in cleaner steel with smoother surface.
- Phosphorus (P): ≤0.045% - Low content avoids brittleness and ensures material remains tough and ductile.
- Sulfur (S): ≤0.050% - Minimizes inclusions for better machinability and overall strength.
- Tensile Strength: 470-630 MPa - Provides significant load-bearing capacity and structural integrity.
- Yield Strength: ≥345 MPa - Withstands substantial stress without permanent deformation.
- Elongation: ≥21% - Good ductility for fabrication processes.
- Density: 7.85 g/cm³ - Balanced ratio of strength to weight.
- Hardness: HRB 80-95 - Supports wear resistance and machinability while retaining flexibility.
- Construction: Structural beams, columns, and frames for buildings and bridges.
- Heavy Machinery: Components for construction and mining equipment.
- Pipelines: Manufacturing of oil, gas, and fluid transport pipelines.
- Automotive Industry: Production of durable automotive parts.
- Metal Fabrication: Plates, sheets, and structural components.
Q345 Alloy is a versatile high-strength low-alloy steel offering superior mechanical properties including high tensile and yield strength, good ductility, and excellent weldability. Its balanced composition and robust performance make it ideal for demanding structural and industrial applications across construction, heavy machinery, pipelines, automotive, and metal fabrication industries.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.