DX53D+ZF Galvannealed Steel Coil

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DX53D+ZF Galvannealed Steel Coil

Product Description

DX53D+ZF Galvannealed Steel Coil is a zinc-iron alloy coated steel product designed for deep drawing applications and demanding cold forming processes. Manufactured through continuous hot-dip galvanizing followed by controlled alloying heat treatment, DX53D+ZF features a metallurgically bonded zinc-iron coating that supports subsequent painting, resistance spot welding, and metal fabrication.

Also referenced as DC53D+ZF in some material specifications and procurement inquiries, this steel grade combines a deep-drawing-quality substrate with a zinc-iron alloy coating. DC53D+ZF is suitable for manufacturers requiring improved elongation and forming performance for complex stamped components. Typical applications include automotive formed panels, home appliance components, electrical enclosures, and industrial sheet metal products.

Compared with DX51D+ZF and DX52D+ZF, DX53D+ZF is designed for more demanding forming operations. DC53D+ZF offers a material option for applications where substrate ductility and forming consistency are important. Rosen supplies DX53D+ZF Galvannealed Steel Coil with different coating specifications and dimensions, subject to production availability.

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Product Features

Material Grade and Applications

Coating Types and Surface Treatment Methods

Available Range

Chemical Composition

Mechanical Property

Product Features

Zinc-Iron Alloy Coating

DX53D+ZF features a ZF coating formed through hot-dip galvanizing followed by controlled alloying heat treatment. Iron diffuses into the zinc layer to form a zinc-iron alloy coating with a characteristic matte gray appearance.

Suitable for Deep Drawing

DX53D is designed for deep drawing applications. Its higher elongation and improved forming characteristics compared with general forming grades make it suitable for components involving greater deformation.

Good Paintability

The galvannealed surface provides favorable characteristics for subsequent painting and powder coating. Appropriate cleaning and surface pretreatment should be selected according to the final coating system.

Resistance Spot Welding Compatibility

The zinc-iron alloy coating is suitable for resistance spot welding applications. Welding current, electrode pressure, welding time, and electrode maintenance should be adjusted according to the coating specification and production conditions.

Corrosion Protection

The zinc-containing alloy coating provides sacrificial corrosion protection to the steel substrate. Coating mass, surface treatment, and additional painting systems should be considered together to meet the corrosion protection requirements of different applications.

Material Grade and Applications

DX53D+ZF consists of a DX53D steel substrate and a ZF zinc-iron alloy coating. Under EN 10346, DX53D is intended for deep drawing applications requiring greater deformation capability than general forming and drawing grades.

Material Specification	Description
Steel Grade	DX53D+ZF
Reference Grade	DC53D+ZF
Applicable Standard	EN 10346
Substrate Grade	DX53D
Coating Type	ZF - Zinc-Iron Alloy Coating
Forming Category	Deep Drawing
Product Form	Steel Coil

Typical Applications

Automotive Components: Deep-drawn automotive panels, formed body components, and stamped parts requiring subsequent painting.
Home Appliances: Deep-drawn refrigerator components, washing machine panels, and other formed appliance parts.
Electrical Equipment: Formed electrical enclosures, metal housings, and cabinet components.
Industrial Equipment: Deep-drawn covers, metal casings, and fabricated components requiring complex forming.
Metal Fabrication: Components involving deep drawing, bending, and subsequent surface finishing.

Coating Types and Surface Treatment Methods

DX53D+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	Without additional surface treatment
Chromic Acid Passivation	C	Passivation treatment for surface protection
Oiling	O	Oil application to support storage and processing
Passivation + Oiling	CO	Combined passivation and oiling treatment
Chrome-Free Passivation	C5	Passivation without chromium
Chrome-Free Passivation + Oiling	CO5	Combined chrome-free passivation and oiling
Chrome-Free Inorganic Passivation	IC	Inorganic passivation treatment 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	Self-lubricating treatment without chromium
Easy-Workability Self-Lubrication	EW	Surface 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	Surface treatment for fingerprint resistance
Conductive and Fingerprint-Resistant	NE	Chrome-free conductive and fingerprint-resistant treatment

Available surface treatments should be confirmed according to actual production specifications and order requirements.

Available Range

Rosen supplies DX53D+ZF Galvannealed Steel Coil within the following published galvannealed steel product range. Specific grade, coating, and dimension combinations are subject to confirmation.

Parameter	Available Range
Steel Grade	DX53D+ZF
Thickness	0.5–2.5 mm
Width	800–1800 mm
Coil Inner Diameter	508 mm / 610 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

Chemical Composition

The following table presents the chemical composition limits published in Rosen's galvannealed steel specifications. Values are expressed as maximum mass percentages.

Grade	C (%)	Si (%)	Mn (%)	P (%)	S (%)	Ti (%)
DX53D+ZF	≤0.01	≤0.30	≤0.50	≤0.05	≤0.03	≤0.20

Mechanical Property

DX53D+ZF is designed for deep drawing applications. Its mechanical properties support more demanding forming operations compared with general forming grades.

Property	Specification
Yield Strength	140–220 MPa
Tensile Strength	260–380 MPa
Elongation (A80)	≥34%
Plastic Strain Ratio (r90)	≥1.3
Strain Hardening Exponent (n90)	≥0.16

Actual mechanical properties should be verified against the applicable product standard and the material test certificate supplied with the order.