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DX56D+ZF Galvanized Steel Sheet
Product Description
DX56D+ZF Galvannealed Steel Sheet is an extra-deep-drawing steel product designed for sheet metal components involving substantial deformation and complex forming operations. It combines a highly formable steel substrate with a zinc-iron alloy coating produced through hot-dip galvanizing followed by controlled alloying annealing.
The DX56D substrate is intended for extra deep drawing applications where conventional drawing grades may not provide sufficient deformation capability. With a minimum elongation of 37%, a plastic strain ratio (r90) of at least 1.7, and a strain hardening exponent (n90) of at least 0.20, DX56D+ZF offers material properties suited to demanding stamping and forming processes.
The ZF coating creates a metallurgically bonded zinc-iron alloy surface with a characteristic matte gray appearance. This coating is suitable for components requiring subsequent painting, resistance spot welding, and additional surface finishing.
DX56D+ZF Galvannealed Steel Sheet can be considered for complex automotive stamped parts, home appliance components, electrical equipment housings, and industrial metal products. It is particularly relevant to manufacturers evaluating materials for deep-drawn shapes with substantial deformation requirements.
Rosen supplies DX56D+ZF Galvannealed Steel Sheets in different dimensions and coating specifications. Buyers can discuss their required thickness, width, sheet length, coating mass, and surface treatment according to their manufacturing processes.
Product Features
Material Grade and Applications
Coating Types and Surface Treatment Methods
Available Range
Chemical Composition
Mechanical Properties
Product Features
Extra Deep Drawing Capability
DX56D is designed for extra deep drawing applications. Its mechanical properties support greater plastic deformation than conventional general forming and drawing grades, making it suitable for complex sheet metal geometries.
High Elongation and Formability
The minimum elongation of 37% provides an important indicator of the substrate's deformation capability. Its r90 and n90 values also help manufacturers evaluate resistance to thinning and strain distribution during forming.
Zinc-Iron Alloy Coating
The ZF coating is formed by heating hot-dip galvanized steel to promote iron diffusion into the zinc layer. This produces a zinc-iron alloy coating with a matte gray surface and metallurgically bonded structure.
Suitable for Subsequent Painting
The galvannealed surface provides favorable characteristics for paint application and powder coating. Appropriate cleaning and pretreatment should be selected according to the final coating system.
Resistance Spot Welding Compatibility
DX56D+ZF can be considered for resistance spot welding applications. Welding current, electrode pressure, welding time, and electrode maintenance should be optimized according to sheet thickness and coating specifications.
Forming Performance for Complex Components
Its high-formability substrate makes DX56D+ZF a candidate for components involving demanding drawing operations. Actual forming performance should be confirmed through stamping trials using representative tooling and production conditions.
Galvannealed Steel for Different Forming Requirements
Rosen supplies galvannealed steel grades covering general forming, drawing, deep drawing, and extra-deep drawing applications. Manufacturers can compare different substrate grades according to their component designs and stamping requirements.
Flexible Sheet Dimensions and Specifications
Different thicknesses, widths, and sheet lengths are available within the published product range. Customers can discuss their required dimensions and coating specifications for individual manufacturing projects.
Multiple Surface Treatment Options
Rosen offers different surface treatment options, including passivation, oiling, self-lubricating treatments, and selected chrome-free finishes. The appropriate treatment can be discussed according to downstream processing requirements.
Steel Coil and Sheet Supply
Rosen supports both galvannealed steel coil and sheet supply, together with slitting and cut-to-length processing options. This provides flexibility for manufacturers using different production and material handling systems.
DX56D identifies an extra-deep-drawing steel grade under EN 10346, while ZF represents a zinc-iron alloy coating. DX56D+ZF therefore refers to an extra-deep-drawing steel substrate with a galvannealed surface.
Both grades are designed for demanding drawing applications, but DX56D+ZF has higher minimum elongation, r-value, and n-value requirements in Rosen's published specifications. DX56D+ZF is intended for applications requiring greater deformation capability.
DX56D+ZF can be considered for complex automotive components involving extra deep drawing. Actual suitability depends on component geometry, draw depth, tooling design, lubrication, and coating integrity. Production trials are recommended before mass production.
Rosen's published galvannealed steel range includes double-sided coating weights of 80–120 g/m². The specific coating mass should be confirmed according to the component's corrosion protection and processing requirements.
Yes. DX56D+ZF can be considered for deep-drawn appliance components, refrigerator panels, washing machine parts, and other formed metal products requiring high substrate formability and subsequent surface finishing.
Rosen's published galvannealed steel range covers thicknesses of 0.5–2.5 mm, widths of 800–1800 mm, and sheet lengths of 1000–6000 mm. Specific DX56D+ZF combinations should be confirmed before ordering.
Please provide the required steel grade, thickness, width, sheet length, coating weight, surface treatment, order quantity, and intended application. Component drawings and forming requirements can also help clarify material selection.
Looking for extra-deep-drawing galvannealed steel sheets for automotive stamping, home appliance manufacturing, or complex industrial components?
Rosen supplies DX56D+ZF Galvannealed Steel Sheet with different dimensional and coating specifications to support demanding forming and surface finishing requirements.
Send us your required thickness, width, sheet length, coating weight, surface treatment, and order quantity. Our team will review your specifications and provide suitable material and quotation information.
Contact Rosen today to discuss your DX56D+ZF Galvannealed Steel Sheet requirements.
Material Grade and Applications
DX56D+ZF combines an extra-deep-drawing DX56D steel substrate with a zinc-iron alloy coating designated as ZF. Rosen classifies DX56D as an extra-deep-drawing grade.
Material Specification | Description |
|---|---|
Steel Grade | DX56D+ZF |
Alternative Designation | DC56D+ZF |
Applicable Standard | EN 10346 |
Base Material | DX56D |
Substrate Type | Extra Deep Drawing Steel |
Coating Designation | ZF |
Coating Type | Zinc-Iron Alloy Coating |
Forming Category | Extra Deep Drawing |
Product Form | Steel Sheet |
Automotive Manufacturing: Complex stamped panels, deep-drawn automotive components, formed body parts, and components requiring subsequent painting.
Home Appliances: Deep-drawn refrigerator components, washing machine panels, appliance housings, and formed metal covers.
Electrical Equipment: Complex electrical enclosures, equipment housings, and metal cabinet components.
Industrial Equipment: Deep-drawn covers, equipment casings, and sheet metal components requiring substantial deformation.
Metal Fabrication: Complex stamped parts involving multiple forming stages, bending, and subsequent surface finishing.
Coating Types and Surface Treatment Methods
DX56D+ZF uses a zinc-iron alloy coating designated as ZF. Different surface treatments can be selected according to storage, lubrication, forming, and subsequent finishing requirements.
Surface Treatment | Code | Description |
|---|---|---|
Unprocessed | U | No additional surface treatment |
Chromic Acid Passivation | C | Chemical passivation for surface protection |
Oiling | O | Oil application to support storage and processing |
Passivation + Oiling | CO | Combined passivation and oiling |
Chrome-Free Passivation | C5 | Chromium-free passivation treatment |
Chrome-Free Passivation + Oiling | CO5 | Combined chromium-free passivation and oiling |
Chrome-Free Inorganic Passivation | IC | Inorganic passivation without chromium |
Chrome-Free Inorganic Passivation + Oiling | ICO | Combined inorganic passivation and oiling |
Self-Lubricating | SL | Surface treatment with self-lubricating properties |
Chrome-Free Self-Lubrication | SL2 | Chromium-free self-lubricating treatment |
Easy-Workability Self-Lubrication | EW | Treatment designed to support forming operations |
Inorganic Self-Lubrication | SW | Inorganic self-lubricating treatment |
Inorganic Solid-State Lubrication | T | Inorganic solid-state lubrication |
Chrome-Free Fingerprint-Resistant | N5 | Chromium-free fingerprint-resistant treatment |
Conductive and Fingerprint-Resistant | NE | Chromium-free conductive and fingerprint-resistant treatment |
The appropriate surface treatment should be determined according to the forming process, storage conditions, and subsequent painting or welding requirements. Specific treatment combinations should be confirmed before ordering.
Available Range
Rosen supplies DX56D+ZF Galvannealed Steel Sheets in different dimensions for extra deep drawing and industrial manufacturing applications.
Parameter | Available Range |
|---|---|
Steel Grade | DX56D+ZF |
Thickness | 0.5–2.5 mm |
Width | 800–1800 mm |
Sheet Length | 1000–6000 mm |
Coating Type | Zinc-Iron Alloy Coating (ZF) |
Coating Weight | 80–120 g/m² (Double-Sided) |
Stock Delivery Time | Approximately 10 days |
Custom Production Lead Time | Approximately60–80 days |
Specific DX56D+ZF thickness, width, length, and coating combinations are subject to production availability and order confirmation.
Chemical Composition
DX56D+ZF uses a low-carbon steel substrate designed for extra deep drawing. The following table presents the chemical composition limits published in Rosen's galvannealed steel specifications.
Maximum values, mass percentage (%)
Grade | C | Si | Mn | P | S | Ti |
|---|---|---|---|---|---|---|
DX56D+ZF | ≤0.01 | ≤0.30 | ≤0.30 | ≤0.03 | ≤0.02 | ≤0.20 |
Mechanical Properties
DX56D+ZF is designed for extra deep drawing operations. Its mechanical properties provide important reference values for manufacturers evaluating material behavior during complex stamping and forming.
Property | Specification |
|---|---|
Yield Strength | 120–180 MPa |
Tensile Strength | 260–350 MPa |
Elongation (A80) | ≥37% |
Plastic Strain Ratio (r90) | ≥1.7 |
Strain Hardening Exponent (n90) | ≥0.20 |
Actual mechanical properties should be verified against the applicable product standard and the material test certificate supplied with the order.
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