DX54D Steel Grades
High-Performance Hot-Dip Galvanized Steel for Deep-Drawing and Precision Applications
- Technical Support
DX54D Steel Technical Specifications & Applications
DX54D is a mild steel grade compliant with EN 10346, offering a minimum yield strength of 270 MPa. It provides an optimal balance of strength, formability, and corrosion resistance, making it suitable for various applications in construction and manufacturing.
This steel grade is widely used in structural framing, purlins, and heavy-duty roll-formed sections. Its excellent weldability and cold-forming properties allow for efficient processing in bending, cutting, stamping, and roll-forming operations. Manufactured under stringent quality controls, DX54D meets international standards, ensuring reliable performance in galvanized and structural steel applications. As a core product of Hengze Steel Group, DX54D is trusted globally for durable, high-performance galvanized structural steel solutions in construction, engineering, and manufacturing sectors.
Table of Contents
1. Typical Uses & Selection Guidance
- Structural Applications
DX54D is a hot-dip galvanized steel grade compliant with EN 10346, designed for deep-drawing and complex cold-forming applications. With a minimum yield strength of 120 MPa and tensile strength ranging from 260 to 350 MPa, it offers excellent formability and corrosion resistance. This steel grade is widely used in automotive parts, household appliances, construction profiles, and precision-engineered components.
- Corrosion Protection
Its durable zinc-based coating ensures long-term protection against rust and oxidation, even in aggressive industrial or outdoor environments. This protective layer significantly extends service life while maintaining a high-quality surface finish suitable for painting or further processing.
- Forming Advantages DX54D offers outstanding formability, with elongation ≥34% and minimal springback, making it ideal for manufacturing complex shapes with high dimensional accuracy. Strict production control guarantees consistent quality, compliance with international specifications, and reliable performance in demanding structural and engineering applications.
2. Technical Specifications Table
1. Chemical Composition Requirements (Maximum %)
| Steel Grade | Carbon (C) | Silicon (Si) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) | Titanium (Ti) |
|---|---|---|---|---|---|---|
| DX54D | ≤ 0.12% | ≤ 0.50% | ≤ 0.60% | ≤ 0.10% | ≤ 0.045% | ≤ 0.30% |
2. Mechanical Property Requirements (Maximum Values)
| Steel Grade | Min. Yield Strength (MPa) | Min. Tensile Strength (MPa) | Min. Elongation (%) Lo=80 mm | Bend Angle (°) | Mandrel Diameter (× Thickness t) |
|---|---|---|---|---|---|
| DX54D | 120–220 | 260–350 | ≥36% | 180° | 6t |
3. Coating Adhesion (180° Bend Test) Requirements
| Coating Class | Mandrel Diameter (× Thickness t) |
|---|---|
| Z100, Z200 | 1t |
| Z275, Z350, Z450, AZ150, AZ200, AM100, AM125, AM150, AM175, AM200, AM225 | 2t |
| Z600 | 3t |
4. Applicable Hot-Dip Metallic Coating Types
| Coating Class | Composition (%) | Key Features |
|---|---|---|
| Z (Zinc) | ≥99% Zinc | Basic corrosion protection; suitable for general use. |
| ZA (Zinc-Aluminium) | 95% Zn, 5% Al | Improved corrosion resistance over pure zinc. |
| ZF (Zinc-Iron) | Zinc with iron alloy | Enhanced hardness and wear resistance. |
| ZM (Zinc-Magnesium) | Zn with 2–4% Mg, 5–13% Al | Superior corrosion resistance in harsh environments. |
| AZ (Aluminium-Zinc) | 55% Al, 43.5% Zn, 1.5% Si | Excellent corrosion resistance and heat reflectivity. |
| AM (Aluminium-Magnesium) | Al with Mg alloy | High corrosion resistance; suitable for high-temperature applications. |
3. DX54D vs DX55D — What’s the Difference?
| Property | DX54D Steel Grade | DX55D Steel Grade |
|---|---|---|
| Yield Strength | 120–220 MPa | 180–280 MPa |
| Tensile Strength | 260–350 MPa | 300–400 MPa |
| Elongation (80 mm) | ≥36% | ≥34% |
| Bendability | 180° with 6t mandrel | 180° with 6t mandrel |
| Coating | Zinc-based coatings (Z, ZF, ZA, ZM, AZ, AS) | Aluminium-silicon (AS) coating only |
| Application Focus | Automotive, household appliances, construction | Automotive exhaust systems, high-temperature applications |
DX54D Steel FAQ：
DX54D is a low-carbon, hot-dip galvanized steel grade manufactured to EN 10346 standards. It is engineered for deep-drawing and complex cold-forming applications, combining superior formability with excellent corrosion resistance. DX54D is widely utilized in automotive body panels, household appliances, construction profiles, and precision-engineered components. Multiple zinc-based coatings—including Z, ZF, ZA, ZM, AZ, and AS—are available to provide tailored corrosion protection for diverse industrial environments.
DX54D offers an optimal balance between strength and formability, with the following key mechanical properties:
Yield Strength: 120–220 MPa
Tensile Strength: 260–350 MPa
Elongation (Lo=80 mm): ≥36%
Bendability: 180° with a 6t mandrel
These properties ensure excellent performance in high-precision cold-forming processes, supporting consistent dimensional accuracy.
DX54D is manufactured via a cold-rolling process followed by continuous hot-dip galvanization. During galvanization, the steel is coated in molten zinc to form a uniform protective layer, significantly enhancing resistance to corrosion and oxidation. This process ensures long-term durability while maintaining a high-quality surface suitable for painting or further processing.
DX54D is extensively applied across automotive, household appliance, construction, and precision-engineering sectors:
Automotive: Body panels, structural components
Household Appliances: Refrigerators, washing machines, HVAC components
Construction: Roofing sheets, purlins, structural profiles
Precision Engineering: Complex components requiring high dimensional accuracy
Its combination of high formability and corrosion protection makes DX54D an ideal solution for manufacturing intricate, high-performance parts.
Compared to lower grades such as DX51D, DX54D offers superior formability due to higher elongation and lower yield strength, making it ideal for deep-drawing applications. It allows for complex shapes with minimal springback, while maintaining adequate corrosion resistance. When compared with higher-strength grades, DX54D provides excellent cold-forming performance but with moderate mechanical strength. Selection should be based on the specific application’s balance between formability, strength, and corrosion requirements.
