Product Description
DX53D+Z is a hot-dip galvanized steel coil specifically developed for applications that demand a balance between excellent formability and long-term corrosion resistance.
The DX53D grade represents a deep-drawing quality steel with controlled mechanical properties, making it highly suitable for cold forming operations such as bending, drawing, profiling, and stamping.
The "+Z" designation indicates the application of a zinc coating through the hot-dip galvanizing process. This zinc layer forms a continuous protective barrier that effectively shields the steel substrate from corrosion, especially in humid, outdoor, or mildly aggressive environments.
As a result, DX53D+Z galvanized steel coils are widely applied in automotive components, construction materials, roofing systems, and home appliance manufacturing, where durability, surface quality, and weather resistance are critical.
With good weldability, uniform surface finish, and reliable coating adhesion, DX53D+Z galvanized steel coils offer excellent versatility for a broad range of industrial and engineering applications.
DX53D+Z Galvanized Steel Coil Standard Specifications
| Item | Description |
|---|---|
| Standard | ASTM, AISI, SUS, JIS, EN, DIN, BS, GB, etc. |
| Material Grades | DX51D, DX52D, DX53D, DX54D; S220GD, S250GD, S280GD, S350GD, S550GD; SGCC, SGHC, SGCH, SGH340, SGH400, SGH440, SGH490, SGH540; SGCD1, SGCD2, SGCD3; SGC340, SGC490, SGC570; CQ, FS, DDS, EDDS; or as per customer requirements |
| Thickness | Hot Rolled: 0.12 – 3.0 mm |
| Cold Rolled: 1.20 – 4.60 mm | |
| Width | 600 – 2200 mm (regular widths: 1000 / 1250 / 1500 mm) |
| Thickness Tolerance | ±0.01 mm |
| Width Tolerance | ±2 mm |
| Coil ID | 508 – 610 mm (customizable) |
| Coil Weight | 3 – 5 tons (customizable) |
| Zinc Coating | 30 – 275 g/m² |
| Spangle Type | Big spangle, regular spangle, mini spangle, zero spangle |
| Surface Treatment | Galvanized, black painted, PE coated, or customized |
| Processing Service | Slitting, cut-to-length, customized processing |
DX53D+Z Galvanized Steel Coil Equivalent Grades
| Standard System | Specification |
|---|---|
| European EN | EN 10346:2009 |
| China GB | GB/T 2518-2008 |
| Japanese JIS | JIS G3302-2005 |
| American ASTM | ASTM A653M |
| EN Grade | China | Europe | Japan | USA |
|---|---|---|---|---|
| DX53D+Z | DX53D+Z | DX53D+Z | SGCD2 | ASTM A653 FS Type A / Type B |
Chemical Composition of DX53D+Z (%)
| Element | C | Si | Mn | P | S | Ti |
|---|---|---|---|---|---|---|
| Max. | 0.12 | 0.50 | 0.60 | 0.12 | 0.045 | 0.30 |
Mechanical Properties
Tensile Strength: 270 – 380 MPa
Yield Strength: 140 – 260 MPa
Elongation: ≥ 30%
These properties ensure excellent deep-drawing capability and stable performance during forming and fabrication.
Delong Warehouse & Storage Management
Our modern warehouse facilities are designed for the efficient storage and handling of DX53D+Z galvanized steel coils. Coils are systematically arranged according to grade, size, and specification, enabling fast identification and order processing.
To preserve the quality of the zinc coating, the warehouse environment is strictly controlled to minimize moisture exposure and temperature fluctuations.
A digital inventory management system provides real-time stock tracking, ensuring accurate order fulfillment and reliable delivery schedules. Through standardized storage procedures and careful handling, we guarantee that all DX53D+Z galvanized steel coils are delivered in optimal condition.
Product Inspection
Each DX53D+Z galvanized steel coil undergoes comprehensive quality inspection prior to shipment. The coating surface is visually examined to ensure brightness, uniformity, and the absence of defects such as wrinkles, runs, or bare spots.
Coating thickness is measured using coating thickness gauges and verified through zinc weight conversion.
Adhesion strength is evaluated by bending tests at 90°–180°, ensuring no cracking or peeling of the zinc layer.
Mechanical resistance can be confirmed through impact testing using a heavy hammer method.
Corrosion resistance tests, including salt spray testing and copper sulfate testing, are performed on a batch basis to ensure compliance with standards.
Product Measurement & Quality Verification
DX53D+Z galvanized steel coils conform strictly to EN 10346 and ASTM A653 requirements. Typical dimensions include thicknesses from 0.4 mm to 3.0 mm, widths from 700 mm to 1650 mm, and coil inner diameters of 508–610 mm, with outer diameters ranging from 1200 mm to 1800 mm.
Zinc coating weights from Z60 to Z275 (60–275 g/m²) are verified using X-ray fluorescence (XRF) and magnetic flux measurement methods to ensure coating uniformity and strong adhesion. Additional inspections cover flatness tolerance (±1.5 I-units), edge trimming accuracy (±1 mm), and surface condition (zero spangle or minimized spangle), supported by automated optical inspection systems.
Mill Test Certificates (EN 10204 3.1 / 3.2) confirm mechanical performance, including yield strength, tensile strength, and elongation, making the product suitable for automotive stamping, roofing systems, and appliance manufacturing.
Product Packaging
DX53D+Z galvanized steel coils are packaged using multi-layer protective solutions to prevent corrosion and mechanical damage during transportation and storage. Each coil is securely strapped with corrosion-resistant steel bands and wrapped with VCI film or waterproof plastic, providing effective protection against moisture, dust, and UV exposure.
Edge protectors are installed to prevent deformation, and anti-corrosion oil or desiccant packs are added for shipments to high-humidity regions. Packaging options can be customized, including wooden pallets, steel framework crates, or slit coil bundles.
Clear labeling with EN 10346 and ASTM A653 compliance information, dimensional data, and QR code traceability ensures smooth logistics and compliance with international shipping standards such as ISO 9001.
Q1: What is DX53D+Z steel?
DX53D+Z is a continuously hot-dip galvanized cold-rolled low carbon steel grade defined in EN 10346. "DX53D" refers to the base steel with enhanced formability, while "+Z" indicates a zinc coating applied on both sides to provide corrosion protection.
Q2: Which standard governs DX53D+Z steel?
DX53D+Z is produced in accordance with EN 10346, which specifies requirements for continuously hot-dip coated flat steel products, including chemical composition, mechanical properties, coating mass, surface quality, and dimensional tolerances.
Q3: What mechanical properties can be expected from DX53D+Z?
DX53D+Z typically offers a tensile strength in the range of approximately 270–410 MPa, with a low yield strength and a minimum elongation of about 23% (A80), making it suitable for forming, bending, and moderate deep-drawing applications.
Q4: How does DX53D+Z differ from DX51D+Z?
Compared with DX51D+Z, DX53D+Z generally provides improved formability and a more stable deformation behavior, making it better suited for parts that require more demanding shaping or complex forming operations.
Q5: What does the "+Z" coating designation mean?
The "+Z" symbol indicates a hot-dip zinc coating applied in a continuous galvanizing line. The coating provides sacrificial corrosion protection, helping to extend the service life of the steel in humid or mildly corrosive environments.
Q6: What zinc coating weights are commonly available for DX53D+Z?
Common zinc coating designations include Z10, Z15, Z20, Z25, and Z30, representing the total zinc mass on both sides in g/m². Higher coating weights provide increased corrosion resistance but may slightly affect formability.
Q7: Is DX53D+Z suitable for welding?
Yes, DX53D+Z exhibits good weldability using standard resistance welding and arc welding methods. However, appropriate ventilation and process adjustments are recommended due to zinc evaporation during welding.