language

Home

Products

En 10346 Aluminized Steel Pipe

For European buyers sourcing aluminized steel pipe and tube, understanding EN 10346 aluminized steel specifications is essential.

Keywords:

En 10346 Aluminized Steel Pipe

Category:

Aluminized Steel Coil / Tube

Inquiry Now

Send E-mail

File Download

sales1@tedaganghua.com

+86 22 86896631、+86 15822676888

Product Details

EN 10346 Aluminized Steel Pipe: The European Standard Complete Guide for DX51D to DX57D Grades

For European buyers sourcing aluminized steel pipe and tube, understanding EN 10346 aluminized steel specifications is essential. Unlike simple coating standards, EN 10346 defines the complete product system, including steel substrate grade, coating type, coating weight, surface quality, and mechanical properties.

From general forming grades such as DX51D to advanced deep drawing grades such as DX56D and DX57D, EN 10346 provides a clear material selection path for automotive exhaust systems, heat-resistant components, and industrial applications.

This guide explains the EN 10346 grade hierarchy, coating designation system (+AS/+ZA/+AZ), AS080/AS120/AS150 coating weights, and surface quality classifications for European procurement.

1. What Is EN 10346 Aluminized Steel?

EN 10346 is the European standard for continuously hot-dip coated steel flat products. For aluminized steel, the most common coating designation is +AS, meaning aluminum-silicon alloy coating.

The standard controls:

Steel substrate grade
Mechanical properties
Coating type and weight
Surface quality
Dimensional tolerance

For exhaust and high-temperature applications, EN 10346 +AS aluminized steel is widely used because the Al-Si coating provides:

High-temperature oxidation resistance
Good corrosion protection
Excellent coating adhesion after forming
Long service life under thermal cycling

2. EN 10346 DX51D to DX57D Grade Hierarchy

The DX series represents different levels of forming performance. As the grade number increases, the steel becomes more suitable for complex forming operations.

Grade	Forming Level	Main Characteristics	Typical Applications
DX51D	General forming	Basic processing performance	Straight tubes, simple parts, brackets
DX52D	Improved forming	Better ductility than DX51D	Moderate bending components
DX53D	Deep drawing	Higher elongation and forming ability	Automotive exhaust components
DX54D	Special deep drawing	Excellent formability for complex shapes	Exhaust elbows, formed parts
DX56D	Extra deep drawing	Very high ductility	Severe stamping applications
DX57D	Highest deep drawing grade	Maximum forming performance	Extremely complex components

3. Choosing DX Grades for Aluminized Exhaust Pipes

The correct DX grade depends on the complexity of the final component rather than only the pipe diameter.

Application	Recommended Grade
Straight exhaust tube	DX51D+AS
Simple bending tube	DX52D+AS
Expansion and reduction forming	DX53D+AS
Complex exhaust components	DX54D+AS
Deep stamping parts	DX56D/DX57D+AS

Selecting a lower grade than required may reduce material cost initially but can increase production losses caused by cracking, deformation, and scrap.

4. EN 10346 Coating Types: +AS, +ZA and +AZ Explained

EN 10346 includes several coating systems. The designation after the "+" identifies the coating composition.

Coating Designation	Composition	Main Advantage	Typical Application
+AS	Aluminum-Silicon coating	High temperature resistance	Exhaust systems, heat exchangers
+AZ	Aluminum-Zinc coating	Improved corrosion resistance	Building and outdoor applications
+ZA	Zinc-Aluminum coating	Enhanced corrosion protection	Structural and industrial products

For automotive exhaust pipe applications, DX54D+AS and DX53D+AS are among the most common choices because they combine deep drawing ability with heat-resistant Al-Si coating.

5. EN 10346 AS Coating Weight Designations

The AS coating weight indicates the total aluminum-silicon coating mass on both sides of the steel surface.

Designation	Approximate Coating Weight	Application
AS080	80 g/m²	Economy exhaust applications
AS120	120 g/m²	Standard automotive exhaust specification
AS150	150 g/m²	Higher corrosion protection requirements

AS120 is widely considered the balanced choice for automotive exhaust because it provides sufficient corrosion resistance while controlling material cost.

6. EN 10346 Surface Quality Classifications

Surface quality is another important factor when purchasing aluminized steel pipe materials.

Surface Quality	Meaning	Application
A	Standard surface quality	General industrial use
B	Improved surface quality	Visible components
C	Highest surface requirement	Decorative or critical appearance parts

7. EN 10346 Aluminized Steel Pipe Quality Checklist

Before purchasing EN 10346 aluminized steel tube, buyers should confirm:

Correct DX substrate grade
Correct +AS coating type
Required AS coating weight
Surface quality level
Mechanical properties
Dimensional tolerance
Inspection certificate availability

8. EN 10346 Aluminized Steel Supply from Teda Ganghua

Teda Ganghua supplies EN 10346 aluminized steel solutions for European automotive, exhaust system, and industrial customers.

Our product range includes:

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

With strict control of coating weight, substrate properties, surface quality, and dimensional accuracy, Teda Ganghua helps global buyers select the correct EN 10346 material for their applications.

Learn more:
Aluminized Steel Products

Conclusion

EN 10346 provides a complete European purchasing framework for aluminized steel pipe, from DX51D general forming grades to DX57D ultra-deep drawing grades.

For exhaust applications, choosing the correct combination of DX substrate + AS coating weight is the key to balancing forming performance, corrosion resistance, heat resistance, and production cost.

Understanding DX grades, +AS coating requirements, and AS080/AS120/AS150 designations helps European buyers avoid incorrect material selection and achieve reliable long-term performance.

Product Inquiry