EN 10346 DX51D DX52D DX53D DX54D DX55D Cold Forming Tube Hot-Dip Coated Steel Flat Welded Steel Tube For Automobile
Material Specification
EN 10346 is a European standard that specifies the requirements for continuously hot-dip coated steel flat products. The DX series, including DX51D, DX52D, DX53D, DX54D, and DX55D, are grades within this standard that are specifically designed for cold forming applications. These grades are commonly used in the automotive industry for manufacturing flat welded steel tubes due to their excellent formability and corrosion resistance.
Key Features
- Corrosion Resistance: The hot-dip coating provides a protective layer that enhances the steel's resistance to corrosion, making it suitable for automotive applications.
- Formability: These grades are designed for cold forming, allowing for easy shaping and bending without compromising the material's integrity.
- Weldability: The steel's composition allows for efficient welding, which is crucial for manufacturing welded tubes.
- Versatility: Suitable for a wide range of applications beyond the automotive industry, including construction and appliance manufacturing.
Chemical Composition
The chemical composition of these steel grades is crucial for their performance characteristics. Below is a table presenting the typical chemical composition for these grades:
| Element | DX51D | DX52D | DX53D | DX54D | DX55D |
| C (max) | 0.12% | 0.12% | 0.12% | 0.12% | 0.12% |
| Si (max) | 0.50% | 0.50% | 0.50% | 0.50% | 0.50% |
| Mn (max) | 0.60% | 0.60% | 0.60% | 0.60% | 0.60% |
| P (max) | 0.10% | 0.10% | 0.10% | 0.10% | 0.10% |
| S (max) | 0.045% | 0.045% | 0.045% | 0.045% | 0.045% |
| Al (min) | 0.015% | 0.015% | 0.015% | 0.015% | 0.015% |
Mechanical Properties
The mechanical properties of these grades are tailored to meet the demands of cold forming and welding. The table below outlines the typical mechanical properties:
| Property | DX51D | DX52D | DX53D | DX54D | DX55D |
| Yield Strength (MPa) | ≥140 | ≥140 | ≥140 | ≥140 | ≥140 |
| Tensile Strength (MPa) | 270-500 | 270-420 | 270-380 | 270-350 | 270-330 |
| Elongation (%) | ≥22 | ≥26 | ≥30 | ≥34 | ≥38 |
Steel Grade
The DX series grades are differentiated primarily by their formability and mechanical properties. As the grade number increases, the material generally offers better formability and ductility, making DX55D the most formable among them.
Application
These steel grades are extensively used in the automotive industry for manufacturing components such as:
- Exhaust systems
- Structural reinforcements
- Body panels
- Chassis components
Additionally, they are used in other industries for applications like:
- Construction materials
- Household appliances
- Electrical enclosures
Possible Alternative Grades
Depending on the specific requirements, alternative grades may be considered. These include:
- EN 10142: Another standard for hot-dip galvanized steel, suitable for similar applications.
- ASTM A653: An American standard for hot-dip galvanized steel, offering comparable properties.
- JIS G3302: A Japanese standard for hot-dip galvanized steel, often used as an alternative in international markets.
TORICH Group, an one-stop service provider of raw materials engaged in raw material production, R&D and
trade, has 30+ years of experience in the market, exported to 56 +countries, and won good reputation and
credibility among domestic and foreign customers.
The company's production plant covers an area of over 10,000 square meters, with an annual production
capacity of 50,000 tons of materials and a comprehensive trading and warehousing capacity of 100,000 tons, which can satisfy customers' personalized needs for raw materials in terms of diversity and timeliness.
The group holds shares in more than ten domestic production entities, whose main products include
seamless steel pipes ( carbon steel and stainless steel), welded pipes ( carbon steel and stainless steel), pipe fittings ( carbon steel and stainless steel), titanium (titanium tubes, titanium rods, titanium cakes, titanium plates, etc.), aluminum (aluminum tubes, aluminum rods, aluminum die casting, aluminum casting, CNC machining), and CNC deep processing of metal materials such as tubes, rods, and casting parts.
Over the past 30 years, the company has been gradually developing new technologies and materials to meet
the growing needs of customers and various diversified needs, exporting to more than 56 countries and still
increasing the number of exporting countries, aiming to help customers to solve the demand for raw materials, and to facilitate one-stop purchasing for customers.
Q: Are you trading company or manufacturer ?
A: manufacturer,also can do trading.
Q: How long is your delivery time?
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact with me.
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