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GMW3032M HR340LA Steel Coils Hot Rolled Steel
- John
SteelPro Group introduces HR340LA Steel Coils, a high-strength low-alloy (HSLA) steel certified to the GMW3032M standard. It is designed for exceptional automotive, construction, and machinery manufacturing performance.
This article explores the unique properties, technical specifications, manufacturing processes, and applications of HR340LA steel coils, tailored to your project requirements.
What Is HR340LA Steel?
HR340LA is a high-strength low-alloy steel, processed using the hot rolling method. It offers an ideal balance of mechanical strength, excellent weldability, and cost-efficiency. With a minimum yield strength of 340 MPa, this steel is highly suitable for components requiring durability under stress, such as automotive reinforcements, structural beams, and industrial supports.
HR340LA Steel Key Features
- Hot Rolled Strength: Consistent tensile and yield performance.
- Low Carbon Content: Enhances formability and ease of welding.
- Microalloying Elements: Titanium (Ti) and Niobium (Nb) ensure superior grain structure and toughness.
HR340LA Steel Coils Dimensions and Standards
SteelPro Group offers HR340LA steel coils compliant with GMW3032M, EN 10149-2, and ISO 9001:2015. Our precise dimensions allow seamless integration into various industrial applications.
- Thickness: 1.5 – 12.0 mm (0.059 – 0.472 inches)
- Width: 900 – 2000 mm (35.43 – 78.74 inches)
- Length: Variable, depending on coil size
Our HR340LA steel coils are available with common zinc coating options such as Z120 (120 g/m² total coating weight), Z180 (180 g/m²), and Z275 (275 g/m²).
Chemical Composition of HR340LA Steel
HR340LA is engineered for an optimized balance of strength and machinability. Its low carbon content supports superior weldability and reduced tool wear during machining.
| Element | Content (%) | Purpose |
| Carbon (C) | ≤ 0.12 | Maintains weldability and machinability. |
| Manganese (Mn) | 0.80 – 1.50 | Enhances tensile strength and toughness. |
| Silicon (Si) | ≤ 0.50 | Improves deoxidation during production. |
| Phosphorus (P) | ≤ 0.020 | Controls grain growth for better formability. |
| Sulfur (S) | ≤ 0.015 | Reduces brittleness in finished products. |
| Titanium (Ti) | 0.015 – 0.060 | Refines grain structure for added strength. |
| Niobium (Nb) | 0.010 – 0.050 | Strengthens the steel through micro alloying. |
| Aluminum (Al) | ≥ 0.015 | Acts as a grain refiner, enhancing ductility. |
HR340LA Steel Mechanical Properties
| Property | Value |
| Yield Strength (Re) | 340 – 460 MPa (52.2 – 66.7 ksi) |
| Tensile Strength (Rm) | 440 – 580 MPa (63.8 – 84.1 ksi) |
| Elongation (A80) | ≥ 18% |
| Hardness (HRB) | ≤ 85 |
| Impact Energy (Charpy V) | ≥ 30 J at -20°C (22.1 ft-lb at -4°F) |
HR340LA Steel Coils Production and Processing
The production process of HR340LA Steel Coils includes hot rolling, pickling, and custom processing solutions tailored to industrial requirements.
Compared to CR340LA steel, the HR340LA steel coil does not go through work hardening during hot rolling, so it is more ductile and cost-effective. However, its surface is rougher and may need extra processing, like pickling and oiling, to improve the finish.
At SteelPro Group, we use advanced technologies to ensure that HR340LA steel coils are of the highest quality. Here’s how our processes make a difference:
- Using cutting-edge water-quenching technology, we cool steel at speeds of ≥1000°C/sec. This rapid cooling improves the strength and durability of HR340LA steel.
- Our vertically radiant tube annealing furnace uses automated temperature controls to ensure uniform steel properties, making it stronger and easier to work with.
- Special cooling equipment helps us create high-strength steel with consistent quality and performance.
We can also offer advanced surface treatments like galvanization, powder coating, and phosphating.
Applications of HR340LA Steel Coils
HR340LA steel coils find widespread use in industries due to their strength, adaptability, and cost-efficiency.
Automotive Industry
- Crash-Resistant Structures: Reinforcement beams and crumple zones for enhanced safety.
- Suspension Components: Control arms and stabilizers for superior performance.
- Chassis Frames: Ensuring structural durability while minimizing weight.
Construction Sector
- Structural Beams and Columns: Supporting high-load frameworks.
- Industrial Panels: Long-lasting, lightweight panels for large-scale projects.
- Bridges: Load-bearing components with high fatigue resistance.
Machinery Manufacturing
- Heavy Equipment Parts: Brackets, supports, and reinforcements for high-stress machinery.
- Agricultural Equipment: Durable components for demanding field operations.
Why Choose SteelPro Group for HR340LA Steel Coils?
At SteelPro Group, we deliver GMW3032M-certified HR340LA steel coils with unmatched quality. We also offer other products like DP600 steel sheets. From tailored cutting solutions to advanced surface treatments, our comprehensive services ensure every product meets your exact specifications.
Advantages of Partnering with Us
- Consistent supply and large production capacity.
- Precision manufacturing using cutting-edge technology.
- Tailored solutions for a variety of applications.
