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En 10346 Dx54d+As120 Aluminized Pipe

For European automotive and industrial buyers, ordering aluminized steel pipe requires more than simply writing “aluminized steel”.

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En 10346 Dx54d+As120 Aluminized Pipe

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Aluminized Steel Coil / Tube

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EN 10346 DX54D+AS120: How to Read and Specify European Aluminized Pipe Correctly

For European automotive and industrial buyers, ordering aluminized steel pipe requires more than simply writing “aluminized steel”. A complete specification such as DX54D+AS120 contains critical information about forming performance, coating type, and corrosion protection level.

A single incorrect letter or number can result in receiving the wrong material grade, unsuitable forming performance, or insufficient coating protection. Understanding the EN 10346 naming system helps buyers avoid costly production failures.

This guide explains how to read DX54D+AS120, compares it with ASTM A463 T1 and JIS G3314 standards, and provides a practical specification checklist for aluminized pipe purchasing.

1. DX54D+AS120 Meaning: Breaking Down Every Symbol

The designation DX54D+AS120 contains five key elements:

Symbol	Meaning	Explanation
DX	Cold forming steel	Steel grade designed for cold forming applications
54	Special deep drawing grade	Higher formability than DX51D and DX53D
D	Hot-dip coated steel	Continuously hot-dip coating process
+AS	Aluminum-Silicon coating	Al-Si coating for heat and oxidation resistance
120	Coating weight	120 g/m² total coating mass

Therefore:

DX54D+AS120 = Special deep drawing steel substrate + aluminum-silicon coating + 120 g/m² coating weight.

2. Why DX54D Is Selected for Complex Exhaust Components

DX54D is not chosen because it is the cheapest substrate. It is selected because many exhaust components require severe forming operations.

Typical DX54D applications include:

Exhaust pipe elbows
Muffler end caps
Expansion sections
Deep drawn exhaust shells
Complex automotive forming parts

Compared with lower grades, DX54D provides:

Grade	Forming Ability	Recommended Use
DX51D	General forming	Straight tube and simple parts
DX53D	Deep drawing	Moderate exhaust forming
DX54D	Special deep drawing	Complex exhaust components
DX56D/DX57D	Extra deep drawing	Extreme forming requirements

3. Understanding the AS120 Al-Si Coating

The “AS120” part describes the aluminum-silicon coating system.

The coating normally contains:

Aluminum as the main protective element
Silicon to control Fe-Al intermetallic layer growth
Metallurgical bonding layer between coating and steel

AS120 means the coating weight is approximately:

120 g/m² total coating weight on both sides.

Coating Grade	Protection Level	Typical Application
AS080	Economical protection	Aftermarket exhaust sections
AS120	Balanced protection	Automotive OEM exhaust systems
AS150	Higher corrosion resistance	Severe environments

4. Common Specification Mistakes When Ordering DX54D+AS120

Mistake 1: Writing DX54+AS120 Without the Final D

DX54 and DX54D are not equivalent expressions. The “D” confirms the product belongs to the hot-dip coated steel category.

Mistake 2: Confusing AS120 With 120 Micron Thickness

AS120 refers to coating weight, not coating thickness. The actual coating thickness depends on aluminum density and distribution.

Mistake 3: Ordering AS120 Without Substrate Grade

AS120 only defines coating protection. It does not guarantee forming performance. A DX51D+AS120 tube and DX54D+AS120 tube may have completely different production results.

5. DX54D+AS120 vs ASTM A463 T1 vs JIS G3314

Different markets use different standard systems. Buyers should understand the relationship before comparing quotations.

Standard	Grade Example	Coating Type	Main Market
EN 10346	DX54D+AS120	Al-Si coating	Europe
ASTM A463	T1 Type 1	Al-Si coating	North America
JIS G3314	SA1D / SA1C	Al-Si coating	Japan / Asia

6. Practical Purchasing Checklist for European Buyers

Before confirming an order, verify the following points:

Material grade: DX54D
Coating type: +AS
Coating weight: AS120
Tube outside diameter and wall thickness
Mechanical properties
Surface quality requirement
EN 10204 3.1 inspection certificate

7. DX54D+AS120 Aluminized Steel Supply from Teda Ganghua

Teda Ganghua supplies European-standard aluminized steel solutions for automotive exhaust manufacturers, tube producers, and industrial customers.

Our aluminized steel products include:

DX51D+AS aluminized steel
DX53D+AS deep drawing grade
DX54D+AS120 special deep drawing grade
AS080 / AS120 / AS150 coating options
Customized aluminized steel pipe and tube solutions

With professional control of substrate properties, coating weight, surface quality, and dimensional accuracy, Teda Ganghua helps customers select the correct EN 10346 aluminized steel grade for each application.

Learn more:
Aluminized Steel Products

Conclusion

DX54D+AS120 is not simply a material name. It is a complete engineering specification that defines forming capability, coating protection, and application suitability.

For complex exhaust components, correctly specifying DX54D + AS120 ensures the right balance between deep drawing performance, high-temperature resistance, corrosion protection, and manufacturing reliability.

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