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Dx52d Aluminized Steel Pipe

DX52D is a forming-oriented steel grade used when aluminized steel pipe must support more demanding bending

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Dx52d Aluminized Steel Pipe

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Aluminized Steel Coil / Tube

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Product Details

DX52D is a forming-oriented steel grade used when aluminized steel pipe must support more demanding bending, pressing, or stamping operations. Under the EN grade system, DX52D sits above DX51D in forming capability. However, one common purchasing problem remains: buyers often write only “DX52D aluminized steel pipe” and leave out the AS coating designation. This can create an unclear coating requirement.

What Is DX52D?

DX52D is an EN cold-forming steel grade designed for forming applications. Its mechanical requirements are controlled by the applicable EN 10346 specification and product thickness.

For typical thickness ranges, the proof/yield strength is controlled within a relatively low range, while elongation requirements are higher than for the more general DX51D grade. This makes DX52D suitable for components that need bending, pressing, or other cold-forming operations.

Item	DX52D Reference	Procurement Meaning
Standard system	EN 10346	European continuously hot-dip coated steel system
Grade	DX52D	Cold-forming grade
Proof / yield strength	Typically about 140–300 MPa, depending on thickness and specification	Designed for forming rather than high-strength structural use
Forming behavior	More formable than DX51D	Useful for bending and pressing
Coating	Must be specified separately	Do not assume an AS grade from “DX52D” alone

The exact mechanical values should always be checked against the specified EN 10346 edition and thickness range. The DX52D designation itself does not identify the Al-Si coating weight.

Why Does “DX52D Aluminized Pipe” Often Have No AS Code?

This is mainly a terminology problem. Substrate grade and coating grade are two separate specification dimensions.

DX52D → identifies the steel substrate.

AS80 / AS120 / AS150 / AS200 → identifies the Al-Si coating level.

DX52D alone → does not fully define the aluminized product.

Therefore, a tube can be produced from DX52D substrate and supplied with different coating grades, depending on the applicable product specification and production route.

For example, the following are different specifications:

Order Description	Substrate	Coating	Information Level
DX52D aluminized pipe	DX52D	Not stated	Incomplete
DX52D+AS80	DX52D	AS80	Clearer
DX52D+AS120	DX52D	AS120	Clearer
DX52D+AS150	DX52D	AS150	Clearer

If an order only says “DX52D aluminized steel pipe”, the supplier may use a customary or standard coating grade for that product line. However, the buyer should never assume which AS grade will be supplied. The coating should be confirmed before production.

DX52D: Why It Is Better for Forming

The main reason to choose DX52D is its forming behavior. Compared with a more general cold-forming grade, it is intended for applications that place greater demands on plastic deformation.

Bending

Useful for tubes and components that require cold bending, subject to the tube geometry, radius, wall thickness, and forming process.

Press Forming

Suitable for selected pressed or formed components where greater ductility is required.

Fabrication

Can be considered when the tube will undergo several forming steps before final assembly.

However, good substrate formability does not eliminate coating-related forming risks. Tight bending, flaring, expansion, or severe deformation can damage the Al-Si coating. The finished part should therefore be checked at the formed area.

DX51D vs DX52D vs DX53D: The Forming Grade Ladder

The DX series can be viewed as a forming-performance ladder. As the number increases from DX51D to DX53D, the grades are generally intended for progressively more demanding forming operations.

Grade	General Position	Typical Forming Requirement	Typical Selection Logic
DX51D	General cold forming	Bending and ordinary fabrication	Choose when forming demands are moderate
DX52D	Improved forming grade	More demanding bending and pressing	Choose when additional ductility is needed
DX53D	Deep-forming grade	More severe forming operations	Choose for demanding forming geometry

This is a practical selection framework, not a substitute for the mechanical-property requirements in EN 10346. For a deep-drawn or highly deformed component, the actual required elongation, yield strength, forming radius, thickness, and process should be checked before material approval.

Typical DX52D Aluminized Pipe Specifications

Dimensions should be specified independently from the substrate and coating. Typical inquiry examples include:

Profile	Example Size	Wall Thickness	Length	Possible Coating
Round pipe	25 mm OD	1.0 mm	6,000 mm	AS80 / AS120
Round pipe	38.1 mm OD	1.2 mm	6,000 mm	AS80 / AS120
Round pipe	50.8 mm OD	1.5 mm	6,000 mm	AS120 / AS150
Oval pipe	50 × 25 mm	1.5 mm	6,000 mm	AS120

These dimensions are representative examples. Availability depends on the production route, tooling, substrate thickness, coating specification, and order quantity.

What Applications Suit DX52D Aluminized Pipe?

Because the substrate is designed for forming, the material can be considered for fabricated parts that need more than simple cutting and welding.

Formed exhaust components
Bent tubes and fabricated assemblies
Pressed equipment components
General-purpose housings and enclosures
Selected automotive and industrial components
Other applications requiring a formable Al-Si coated steel substrate

For high-temperature exhaust service, the actual operating temperature and thermal cycle must be reviewed. The DX52D designation describes the steel substrate; it does not establish a universal temperature rating for the completed aluminized pipe.

The Procurement Checklist: Never Specify DX52D Alone

A complete order should define three main specification groups: substrate + coating + dimensions.

Specification Group	What to State	Example
Substrate	Steel grade + standard	DX52D, EN 10346
Coating	Al-Si coating grade	AS120
Profile	Round / oval / custom	Round
Size	OD or profile × wall thickness	50.8 × 1.5 mm
Length	Fixed or required length	6,000 mm
Quantity	Pieces or weight	2,000 pcs
Processing	Bending, cutting, flaring, welding, etc.	Cold bending required

Correct Purchase Wording

Instead of writing:

“DX52D aluminized steel pipe”

write a complete specification such as:

DX52D+AS120 aluminized steel pipe, EN 10346

Size: 50.8 mm OD × 1.5 mm WT

Length: 6,000 mm

Quantity: 2,000 pcs

Application: formed exhaust component

If the AS coating grade is intentionally left open, the inquiry should say “AS coating grade to be confirmed” rather than allowing an unspoken supplier assumption.

Teda Ganghua Supply and Stock Support

Teda Ganghua can support buyers sourcing aluminized steel products for general industrial and formed-component applications. Buyers can provide the DX52D substrate requirement together with the AS coating grade, profile, wall thickness, length, and quantity. Standard specifications can then be checked for available stock, while custom dimensions can be evaluated for production.

For stock inquiries, providing the complete specification is especially important. “DX52D” identifies the substrate, but it does not tell the supplier which Al-Si coating grade is required. A complete request reduces quotation errors and makes stock or production availability easier to confirm.

FAQ

1. What is DX52D aluminized steel pipe?

It is a pipe made from DX52D cold-forming steel substrate with an Al-Si coating. The coating grade should be specified separately because DX52D does not define the coating weight.

2. Why is the AS code sometimes missing from an order?

DX52D and the AS coating designation describe two different specification dimensions. Some suppliers may use a customary coating grade when the buyer does not state one, but that assumption should be confirmed before production.

3. Is DX52D more formable than DX51D?

Yes. DX52D is a higher forming grade in the EN sequence and is intended for more demanding cold-forming operations than DX51D. Exact properties depend on thickness and the applicable standard.

4. Can DX52D be combined with AS80 or AS120?

Yes, the substrate and coating are separate specification dimensions. The applicable production and standard requirements should be confirmed for the requested combination.

5. What should I include when ordering DX52D aluminized pipe?

Specify the steel grade and standard, AS coating grade, profile, outside dimensions, wall thickness, length, quantity, tolerances, and any bending, welding, or forming requirements.