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HX420LAD Steel Coil | 1.0935- EN 10346
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This article covers the key details about HX420LAD steel coils, including their properties, composition, uses, and production process. At SteelPro Group, we offer high-quality HX420LAD steel coils in custom sizes, with different coatings and surface treatments to suit various needs.
Keep reading to find out more about our products and how they can support your projects!
What Is HX420LAD Automotive Steel?
HX420LADD steel is a metal-coated high-strength low-alloy steel. HX420LADD steel coils are primarily used in the automotive and industrial sectors for lightweight structural components. They offer good formability and excellent weldability.
Each part of the designation has a specific meaning:
- HX: The steel is hot-dip galvanized
- 420: Minimum yield strength in MPa (Megapascals)
- LA: Low-alloy steel
- D: Surface quality or finish (typically refers to a high-quality surface suitable for coating or further processing)
HX420LAD Steel Equivalent Grades
- JIS: SAPH440
- ASTM: A1011 HSLAS Grade 60
- EN: S420MC/1.0539
HX420LAD Steel Coils Dimensions Range and Certification
SteelPro Group offers high-quality HX420LAD steel coils specifically designed to meet the needs of various automotive and industrial applications. In addition to offering the following sizes, we also provide custom sizing solutions and precise cut-to-length services.
Available product dimensions
- Thickness: 1.2 mm to 6.0 mm (0.047” to 0.236”)
- Width: 900 mm to 2000 mm (35.4” to 78.7”)
- Length: Custom lengths available up to 12,000 mm (472.4”)
Our HX420LAD steel coils are manufactured and certified according to EN 10346, EN 10292, SAE J2340, and ISO 9001:2009 standards. This ensures consistently high quality, excellent mechanical properties, and reliable performance across various applications. SteelPro Group’s commitment to rigorous quality control and adherence to international standards guarantees products that meet or exceed customer expectations.
HX420LAD Steel Chemical Composition – Ladle Analysis
| Element | Composition (%) |
| Carbon (C) | max 0.11 |
| Silicon (Si) | max 0.5 |
| Manganese (Mn) | max 1.4 |
| Phosphorus (P) | max 0.03 |
| Sulfur (S) | max 0.025 |
| Niobium (Nb) | max 0.09 |
| Titanium (Ti) | max 0.15 |
| Aluminum (Al) | min 0.015 |
HX420LAD Steel Mechanical Properties
| Mechanical Property | Typical Value |
| Tensile strength (MPa) | 470-590 |
| Yield strength (MPa) | 420-520 |
| Elongation (min %) | 17 |
HX420LAD Steel Coils Manufacture Process
Our HX420LAD steel coils are produced through a meticulously controlled process including hot rolling and pickling to advanced annealing and final surface treatment.
To guarantee consistent high quality, we employ state-of-the-art technologies, including:
- Ultra-fast water quenching (Kobe Steel Technology): Achieves cooling rates ≥1000°C/sec, ensuring the required strength and microstructure.
- Fully automated radiant tube vertical annealing furnace: Precisely controlled by a mathematical model for uniform heating and stable material performance.
- Secondary cooling equipment: Provides precise cooling control for producing advanced high-strength steel.
- Specially designed furnace rollers: Ensures smooth and stable processing of high-strength coils.
- Online surface inspection system: Enables real-time monitoring for consistent surface quality.
HX420LAD Steel Coils Surface Treatment
HX420LAD steel is suitable for surface coatings due to its low carbon content and excellent surface cleanliness. To enhance the performance and durability of HX420LAD steel coils, we offer a variety of high-quality surface coating options as follows.
| Coating | Composition | Key Features |
| +Z | Pure Zinc | High corrosion resistance |
| +ZF | Zinc-Iron Alloy | Excellent weldability, paintability |
| +ZA | Zinc-Aluminum (95% Zn, 5% Al) | Superior corrosion resistance |
| +ZM | Zinc-Magnesium-Aluminum | Enhanced corrosion resistance at cut edges |
| +AZ | Aluminum-Zinc (55% Al) | Long-lasting corrosion and heat resistance |
| +AS | Aluminum-Silicon (5-10% Si) | Excellent heat and corrosion resistance |
In addition to our wide range of surface coating options, we offer various surface finishing treatments to further enhance the corrosion resistance and processing performance of HX420LAD steel coils. Depending on specific customer needs, we provide the following finishing options:
- Passivation (C): Improves corrosion resistance by creating a protective oxide layer on the surface.
- Oiling (O): Provides temporary corrosion protection during storage and transportation.
- Sealing (L): Involves applying a protective lacquer coating to enhance surface durability and resistance to environmental factors.
- Phosphating (P): Creates a phosphate layer that improves paint adhesion and provides additional corrosion resistance.
- Untreated (U): For applications where no additional surface finishing is required, ensuring flexibility for further processing.
HX420LAD Steel Coils Applications
HX420LAD steel coils are strong, easy to shape, and weld well, making them useful in many industries. Here are some common uses:
Automotive Industry
- Structural reinforcements (e.g., chassis components, cross-members)
- Crash-resistant parts (e.g., impact beams, side intrusion bars)
- Body panels (e.g., inner door panels, roof frames)
Industrial Equipment
- Machine frames and supports
- Structural elements for heavy-duty machinery
- Enclosures and housings for industrial systems
Construction
- Modular building frames and roofing systems
- Load-bearing wall panels and support beams
- Cold-formed profiles for lightweight structural applications
Storage Systems
- Racks, shelves, and pallet systems requiring high load capacity
- Container panels for durable and weather-resistant storage solutions
Trusted HX420LAD Steel Coils for Your Projects
SteelPro Group’s HX420LAD steel coils offer strength, flexibility, and durability for many industries. With custom sizing, coating options, and top-quality production, we help you create reliable products. Contact us to learn more and get the right steel solution for your needs!
