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DX57D+ZF Galvannealed Steel Sheet
Product Description
DX57D+ZF Galvannealed Steel Sheet is a high-formability steel product developed for special extra deep drawing applications. Combining a DX57D steel substrate with a zinc-iron alloy coating, DX57D+ZF Galvannealed Steel Sheet is designed for manufacturing components that require substantial deformation and complex forming operations.
Produced through continuous hot-dip galvanizing followed by controlled alloying annealing, DX57D+ZF Galvannealed Steel Sheet features a metallurgically bonded zinc-iron coating with a characteristic matte gray appearance. The ZF coating provides corrosion protection and supports subsequent painting, resistance spot welding, and surface finishing processes.
With a minimum elongation of 39%, a plastic strain ratio (r90) of at least 1.9, and a strain hardening exponent (n90) of at least 0.21, DX57D+ZF offers mechanical characteristics for demanding stamping applications. This DX57D+ZF Steel Sheet can be considered for complex automotive panels, deep-drawn appliance components, electrical equipment housings, and industrial sheet metal products.
For manufacturers looking for DX57D+ZF Galvannealed Steel Sheet, Rosen provides different dimensional and coating specifications to accommodate industrial manufacturing requirements. DX57D+ZF Galvannealed Steel Sheet is suitable for evaluation in applications where high substrate formability and a zinc-iron alloy surface are both required.
Product Features
Material Grade and Applications
Coating Types and Surface Treatment Methods
Available Range
Chemical Composition
Mechanical Properties
Product Features
Special Extra Deep Drawing Performance
DX57D is designed for demanding deep drawing applications. Its high elongation and favorable plastic deformation characteristics make it suitable for components involving substantial material deformation and complex geometries.
High Plastic Strain Ratio
The minimum r90 value of 1.9 provides an important reference for evaluating resistance to localized thinning during forming. This property is particularly relevant when selecting materials for complex stamping operations.
Zinc-Iron Alloy Coating
The ZF coating is formed through an alloying heat treatment after hot-dip galvanizing. Iron diffuses into the zinc layer to create a zinc-iron alloy coating with a characteristic matte gray surface.
Suitable for Subsequent Painting
The galvannealed surface provides favorable characteristics for painting and powder coating. Appropriate cleaning and pretreatment should be selected according to the final coating system.
Resistance Spot Welding Compatibility
DX57D+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.
Formability for Complex Components
The combination of elongation, r-value, and n-value provides useful reference data for evaluating DX57D+ZF in complex forming processes. Actual performance should be verified through stamping trials using representative tooling and production conditions.
Multiple Galvannealed Steel Grades
Rosen supplies galvannealed steel grades covering general forming, drawing, deep drawing, and extra-deep drawing applications. Buyers can compare different material grades according to component geometry and stamping requirements.
Material Specifications for Complex Forming
Our team can review steel grade, coating weight, sheet thickness, width, and surface treatment to help customers identify suitable material specifications for demanding forming processes.
Flexible Sheet and Coil Supply
Rosen supports both galvannealed steel sheets and coils, together with slitting and cut-to-length processing options for different manufacturing requirements.
Surface Treatment Options
Different surface treatments can be discussed according to storage, lubrication, painting, and welding requirements. The final specification should be confirmed before production.
DX57D identifies a steel grade intended for demanding deep drawing applications, while ZF indicates a zinc-iron alloy coating. DX57D+ZF therefore refers to a high-formability steel substrate with a galvannealed surface.
Both grades are designed for demanding deep drawing applications. However, DX57D+ZF has higher minimum elongation, plastic strain ratio, and strain hardening exponent requirements in Rosen's published specifications. It is intended for applications requiring greater plastic deformation capability.
DX57D+ZF can be considered for complex automotive stamping components requiring high substrate formability. Actual suitability depends on component geometry, draw depth, tooling design, lubrication, and coating integrity. Production trials are recommended for demanding applications.
Rosen's published galvannealed steel range includes double-sided coating weights of 80–120 g/m². The specific coating weight should be confirmed according to the application and order requirements.
Yes. DX57D+ZF can be considered for complex deep-drawn appliance components, formed panels, and metal housings requiring high substrate formability and subsequent painting or 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 DX57D+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 DX57D+ZF Galvannealed Steel Sheet for complex automotive stamping, home appliance manufacturing, or demanding industrial forming applications?
Rosen supplies zinc-iron alloy coated steel sheets with different dimensional and coating specifications to support various manufacturing 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 DX57D+ZF Galvannealed Steel Sheet requirements.
Material Grade and Applications
DX57D+ZF consists of a DX57D steel substrate and a ZF zinc-iron alloy coating. It is intended for demanding forming applications requiring high ductility and substantial plastic deformation.
Material Specification | Description |
|---|---|
Steel Grade | DX57D+ZF |
Applicable Standard | EN 10346 |
Base Material | DX57D |
Coating Designation | ZF |
Coating Type | Zinc-Iron Alloy Coating |
Forming Category | Special Extra Deep Drawing |
Product Form | Steel Sheet |
Automotive Manufacturing: Complex stamped automotive panels, formed body components, and parts requiring substantial deformation and subsequent painting.
Home Appliances: Deep-drawn refrigerator components, washing machine panels, and complex appliance housings.
Electrical Equipment: Formed electrical enclosures, metal housings, and cabinet components involving demanding stamping operations.
Industrial Equipment: Deep-drawn covers, equipment casings, and fabricated components requiring high substrate formability.
Metal Fabrication: Complex sheet metal parts involving multiple forming stages, deep drawing, and subsequent surface finishing.
Coating Types and Surface Treatment Methods
DX57D+ZF uses a zinc-iron alloy coating designated as ZF. Different surface treatments can be selected according to storage, forming, welding, 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 customer's forming process, storage conditions, welding requirements, and subsequent finishing system. Specific treatment combinations should be confirmed before ordering.
Available Range
Rosen supplies DX57D+ZF Galvannealed Steel Sheets in different dimensions for demanding forming and industrial manufacturing applications.
Parameter | Available Range |
|---|---|
Steel Grade | DX57D+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 | Approximately 60–80 days |
Specific DX57D+ZF thickness, width, length, and coating combinations are subject to production availability and order confirmation.
Chemical Composition
DX57D+ZF uses a low-carbon steel substrate designed for special extra deep drawing applications. 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 |
|---|---|---|---|---|---|---|
DX57D+ZF | ≤0.01 | ≤0.30 | ≤0.30 | ≤0.03 | ≤0.02 | ≤0.20 |
Mechanical Properties
DX57D+ZF is designed for special extra deep drawing applications. Its mechanical properties provide important reference values for evaluating material deformation, strain distribution, and forming performance.
Property | Specification |
|---|---|
Yield Strength | 120–170 MPa |
Tensile Strength | 260–350 MPa |
Elongation (A80) | ≥39% |
Plastic Strain Ratio (r90) | ≥1.9 |
Strain Hardening Exponent (n90) | ≥0.21 |
Actual mechanical properties should be verified against the applicable product standard and the material test certificate supplied with the order.
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