With years of industry experience and robust technical support, Gnee Steel is dedicated to providing high-quality DX54D galvanized steel products.
Our goal is to help manufacturing companies achieve efficient, reliable, and high-quality production. Below, we present the unique advantages, mechanical properties, surface treatment options, and applications of DX54D galvanized steel.
What is DX54D Steel?
DX54D is a low-carbon, hot-dip coated deep-drawing steel in the DX series. It is specifically designed for high formability and cold forming applications.
"DX": Deep-drawing series
"54": Formability grade
"D": Deep-drawing quality
Equivalent Steel Number: 1.0952 (FeP06G)
Applications: Automotive body panels, appliance housings, roofing, and any parts exposed to moist or outdoor environments.
Comparison with DX53D:
DX54D has higher formability, making it ideal for more complex shapes.
High-Temperature Applications:
DX54D+AS (aluminum-silicon alloy coated) improves heat resistance, suitable for components like exhaust shields.
Chemical Composition of DX54D Steel
| Element | Content (%) | Function |
|---|---|---|
| Carbon (C) | ≤ 0.08 | Ensures ductility, enables deep drawing without compromising strength |
| Manganese (Mn) | ≤ 0.45 | Enhances strength and toughness |
| Phosphorus (P) | ≤ 0.03 | Improves weldability, reduces brittleness |
| Sulfur (S) | ≤ 0.03 | Reduces brittleness |
| Silicon (Si) | ≤ 0.50 | Increases strength and hardness |
| Aluminum (Al) | 0.02–0.07 | Deoxidizer, improves surface quality |
| Nitrogen (N) | ≤ 0.012 | Enhances uniformity and toughness |
| Titanium (Ti) | ≤ 0.30 | Stabilizes steel, reduces cracks during forming |
| Chromium (Cr) | ≤ 0.20 | Enhances corrosion resistance |
| Nickel (Ni) | ≤ 0.20 | Improves toughness |
| Copper (Cu) | ≤ 0.20 | Strengthens surface |
Summary: Optimized for deep drawing, corrosion resistance, and complex forming.
Mechanical Properties
| Property | Metric | Imperial | Notes |
|---|---|---|---|
| Tensile Strength | 270–370 MPa | 39–54 ksi | Suitable for complex parts |
| Yield Strength | 120–220 MPa | 17–32 ksi | Balanced for strength and formability |
| Brinell Hardness | 90–120 HB | 90–120 HB | Surface durability |
| Rockwell Hardness | 50–65 HRB | 50–65 HRB | |
| Vickers Hardness | 100–130 HV | 100–130 HV | |
| Elongation | ≥ 36% | ≥ 36% | High stretchability for complex shapes |
| Elastic Modulus | 210 GPa | 30,500 ksi | Consistent deformation behavior |
| Anisotropy (R-value, Min) | ≥ 1.6 | ≥ 1.6 | Uniform properties in different directions |
| Strain Hardening Index (n-value, Min) | ≥ 0.18 | ≥ 0.18 | Supports gradual deformation |
Production Processes
SteelPRO Group maintains strict quality control throughout every stage:
Smelting: Refined molten steel ensures consistent chemical composition.
Hot Rolling: Cast billets are rolled at ~1200°C to reduce thickness and improve properties.
Cold Rolling: Further thickness reduction with high surface finish precision.
Continuous Annealing: Heated to 700–800°C to reduce internal stress and improve ductility.
Galvanizing: Hot-dip zinc coating at 450–460°C provides long-term corrosion protection.
Machining & Fabrication
Options:
Drilling & Milling: Low-speed processing to prevent overheating.
Stamping: Excellent for deep-drawn or complex shapes.
Laser Cutting: High-precision cutting without damaging material.
Precautions:
Use lubricants to reduce wear and maintain surface quality.
Control heat during processing to preserve formability.
Welding Methods
Spot Welding: Ideal for thin sheets.
Seam Welding: Continuous thin sections.
GMAW (Gas Metal Arc Welding): Larger or complex structures.
Note: DX54D's low carbon content allows welding without preheating or risk of cracking.
Surface Treatments & Coatings
| Coating/Surface | Description | Best Use |
|---|---|---|
| DX54D+Z | Pure Zinc | General outdoor and automotive |
| DX54D+ZM | Zinc-Magnesium | Enhanced corrosion resistance in humid areas |
| DX54D+ZA | Zinc-Aluminum | Improved hardness and corrosion, building facades |
| DX54D+ZF | Zinc-Iron | Better paint adhesion, automotive parts |
| DX54D+AZ | Aluminum-Zinc | Highest corrosion resistance, roofs, HVAC systems |
| DX54D+AS | Aluminum-Silicon | High temperature resistance, exhaust systems |
Surface Treatment Options:
Passivation, phosphating, organic/epoxy coatings for improved corrosion resistance, paint adhesion, and wear protection.
Key Advantages of SteelPRO DX54D Steel
High Ductility & Complex Forming: Easily shaped without cracking.
Superior Galvanized Layer: Uniform, long-lasting corrosion protection.
Stable Mechanical Properties: Consistent tensile & yield strength.
Excellent Welding Performance: Supports multiple welding methods without cracking.
Efficient Processing: Optimized cold rolling and galvanizing processes reduce costs.
High Surface Quality: Smooth, attractive finish reducing post-processing needs.
Maintenance Guidelines
Transportation & Storage: Use anti-corrosion materials; store in dry, ventilated areas.
Long-term Maintenance: Apply anti-rust agents periodically; repair surface damage promptly.
Result: Prolongs service life and maintains corrosion resistance.
Applications of DX54D Steel
Automotive: Body panels, doors, hoods, structural components.
Appliances: Refrigerator panels, washing machine housings, dryer cabinets.
Construction: Roofing, wall panels, structural frames.
HVAC Systems: Air ducts, furnace casings, ventilation parts.
Furniture & Equipment: Shelving units, metal frames, agricultural machinery.
Electrical & Lighting: Circuit boxes, outdoor lighting enclosures.
Q1: What is DX54D+Z steel?
DX54D+Z is a continuously hot-dip galvanized, extra deep drawing cold-rolled steel grade defined by EN 10346. "DX54D" indicates the base steel has higher formability and lower yield strength than DX53D, while "+Z" denotes a zinc coating on both sides for corrosion protection.
Q2: Which standard applies to DX54D+Z steel?
DX54D+Z is produced according to EN 10346, which covers chemical composition, mechanical properties, zinc coating mass, surface quality, and dimensional tolerances for continuously galvanized flat steel.
Q3: What mechanical properties does DX54D+Z have?
DX54D+Z generally features a tensile strength of approximately 270–420 MPa, a low yield strength for enhanced formability, and a minimum elongation of around 28% (A80), making it ideal for complex stamping, deep drawing, and bending operations.
Q4: How does DX54D+Z differ from DX53D+Z?
DX54D+Z has slightly lower yield strength and higher elongation compared to DX53D+Z, which makes it more suitable for deep-drawing or highly formed components, where avoiding cracking and spring-back is critical.
Q5: What does the "+Z" coating indicate?
The "+Z" symbol represents a continuous hot-dip zinc coating applied to both sides of the steel. This sacrificial coating provides corrosion resistance, prolonging the service life of the material in atmospheric or mildly corrosive conditions.
Q6: What zinc coating weights are available for DX54D+Z?
Typical coating weights include Z10, Z15, Z20, Z25, Z30, and higher. These values represent the total zinc mass in g/m² on both sides. Heavier coatings improve corrosion resistance but may slightly reduce formability.
Q7: Can DX54D+Z be welded?
Yes, DX54D+Z can be welded using standard resistance and arc welding methods. Zinc evaporation may occur locally during welding, so proper ventilation and process control are recommended.