DX54D+ZF Galvannealed Steel Coil

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DX54D+ZF Galvannealed Steel Coil

Product Description

DX54D+ZF Galvannealed Steel Coil is a zinc-iron alloy coated steel product designed for special deep drawing applications and complex cold forming processes. Manufactured through continuous hot-dip galvanizing followed by controlled alloying heat treatment, DX54D+ZF features a metallurgically bonded zinc-iron coating that supports subsequent painting, resistance spot welding, and metal fabrication.

Also referenced as DC54D+ZF in some material specifications and procurement inquiries, this steel grade combines a special deep-drawing-quality substrate with a zinc-iron alloy coating. DX54D+ZF offers higher elongation and improved forming characteristics for components requiring more demanding deformation than conventional drawing applications.

DC54D+ZF is suitable for manufacturers producing complex stamped components, automotive formed panels, home appliance parts, and industrial sheet metal products. For applications requiring consistent forming performance and a paintable surface, DX54D+ZF provides a material option combining specialized substrate properties with galvannealed coating characteristics.

Rosen supplies DX54D+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

DX54D+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.

Special Deep Drawing Performance

DX54D is intended for special deep drawing applications requiring higher deformation capability. Its mechanical properties, including elongation, plastic strain ratio, and strain hardening exponent, support more demanding forming processes.

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

DX54D+ZF consists of a DX54D steel substrate and a ZF zinc-iron alloy coating. Under EN 10346, DX54D is intended for special deep drawing applications requiring higher formability than conventional drawing grades.

Material Specification	Description
Steel Grade	DX54D+ZF
Reference Grade	DC54D+ZF
Applicable Standard	EN 10346
Substrate Grade	DX54D
Coating Type	ZF - Zinc-Iron Alloy Coating
Forming Category	Special Deep Drawing
Product Form	Steel Coil

Typical Applications

Automotive Components: Complex stamped automotive panels, formed body components, and parts requiring subsequent painting or welding.
Home Appliances: Deep-drawn appliance panels, formed refrigerator components, and washing machine parts.
Electrical Equipment: Complex formed electrical enclosures, metal housings, and cabinet components.
Industrial Equipment: Deep-drawn covers, metal casings, and components requiring demanding forming operations.
Metal Fabrication: Special deep-drawn sheet metal parts involving complex geometries and subsequent surface finishing.

Coating Types and Surface Treatment Methods

DX54D+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 DX54D+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	DX54D+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 (%)
DX54D+ZF	≤0.01	≤0.30	≤0.30	≤0.03	≤0.02	≤0.20

Mechanical Property

DX54D+ZF is designed for special deep drawing applications. Its mechanical properties support complex forming operations requiring higher ductility and improved plastic deformation characteristics.

Property	Specification
Yield Strength	120–210 MPa
Tensile Strength	260–350 MPa
Elongation (A80)	≥35%
Plastic Strain Ratio (r90)	≥1.4
Strain Hardening Exponent (n90)	≥0.18

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