The difference between EN 10210 and EN 10219

structural hollow sections are widely used in the construction and manufacturing industries, and different application scenarios require different standards of steel hollow sections. The most common steel pipe standards are EN10219 and EN10210, which specify the quality, performance, and delivery status of steel pipes. Studying their differences is very useful for us.

en10219 vs en 10210

En10219 Definition:

EN10219 is a European standard that provides detailed regulations and requirements for the dimensions, mechanical properties, chemical composition, and other aspects of British standard steel pipes. The EN10219 standard is applicable to non alloy and fine-grained non alloy cold formed welded and seamless steel pipes.

En10210 Definition:

EN10210 is a part of the European standard that specifies the technical delivery conditions for hot-formed welded structural hollow section steel pipes. Specifically, the EN10210 standard covers structural hollow section steel pipes made of non-alloy and fine-grained steel materials for hot forming welding. These steel pipes are commonly used in building structures, bridges, mechanical manufacturing, equipment manufacturing, and other engineering applications.

EN10219 certification and EN10210 certification are European standards for steel pipe products, both of which have high quality standards and are widely used internationally. Both certifications are considered mandatory when manufacturing and selling steel pipe products.

This article aims to introduce the differences between obtaining these two certified products, as well as the benefits of these two standards for the production of steel pipe products and their respective benefits.

EN10219 and EN10210 certifications are important standards for European steel pipe products, ensuring high quality and reliability worldwide. This article emphasizes the differences between these certifications and their respective advantages in steel pipe production.

Although both EN10219 and EN10210 certifications guarantee excellent quality, there are still subtle differences between these two standards.

I. Uses:

EN10219 steel tubes are mainly used in structural applications such as construction, infrastructure development and building frames. While EN10210 steel tubes are widely used for manufacturing hollow sections and have a wide range of applications in mechanical engineering, automotive and other structural projects.

II. Chemical Composition:

EN10219 and EN10210 steel pipes have different chemical compositions, which directly affect their mechanical properties. Compared with EN10210 steel pipe, EN10219 steel pipe usually has lower carbon, sulfur and phosphorus content. However, the exact chemical composition may vary depending on the specific grade and manufacturer.

Chemical composition of EN10210-1 European standard (hot formed hollow profiles made of non-alloy structural steel and fine-grained structural steel)
Steel Grade	Chemical composition limits, %
Steel Grade	C max	Si max	Mn max	P max	S max	N max
S235JRH	0.17	/	1.40	0.040	0.040	0.009
S275J0H	0.20	/	1.50	0.035	0.035	0.009
S275J2H	0.20	/	1.50	0.030	0.030	/
S355J0H	0.22	0.55	1.60	0.035	0.035	0.009
S355J2H	0.22	0.55	1.60	0.030	0.030	/
S355K2H	0.22	0.55	1.60	0.030	0.030	/

Chemical composition of EN10219-1 European standard (Cold formed hollow profiles made of non-alloy structural steel)
Steel Grade		Type of deoxidationa	% by mass, maximum
Steel Name	Steel NO	Type of deoxidationa	C max	Si max	Mn max	P max	S max	N max
S235JRH	1.0039	FF	0.17	/	1.40	0.040	0.040	0.009
S275J0H	1.0149	FF	0.20	/	1.50	0.035	0.035	0.009
S275J2H	1.0138	FF	0.20	/	1.50	0.030	0.030	/
S355J0H	1.0547	FF	0.22	0.55	1.60	0.035	0.035	0.009
S355J2H	1.0576	FF	0.22	0.55	1.60	0.030	0.030	/
S355K2H	1.0512	FF	0.22	0.55	1.60	0.030	0.030	/
a:The deoxidation method is designated as follows:FF: Fully klled steel containing nitrogen binding elements in amounts suffcient to bind available nitrogen (e.g. min. 0,020 % total AI or 0,015 % soluble AI). b:The maximum value for nitrogen does not apply if the chemical composition shows a minimum total AI content of 0,020 % with a minimum AI/N ratio of 2:1, or if suficient other N-binding elements are present. The N-binding elements shall be recorded in the Inspection Document.

III. Yield Strength:

Yield strength is the stress at which a material begins to exhibit plastic deformation. Compared to pipes under the EN10210 standard, steel pipes under the EN10219 standard usually do not have significantly higher yield strength. Therefore, it cannot be simply stated that EN10219 pipes have higher yield strength. In practical applications, these two types of pipes may have similar yield strength.

VI.Tensile Strength:

Tensile strength is the maximum stress that a material can withstand before fracture. In general, EN10210 steel pipes usually have high tensile strength, but it is not absolute. In specific cases, EN10219 steel pipes may also have tensile strength similar to or exceeding that of EN10210 steel pipes. When the pipeline needs to withstand higher tensile loads or pressures, the increased tensile strength is beneficial for EN10210 steel pipes.

V. Impact Properties:

The impact performance of steel pipes is crucial, especially in applications at low temperatures and harsh environments. It is generally believed that EN10210 steel pipe has excellent impact toughness, while EN10219 steel pipe may have relatively weak impact performance. However, the specific impact performance depends on factors such as the specific material composition, manufacturing process, and application environment of the steel pipe. Therefore, in industries that require high brittle fracture resistance, EN10210 steel pipes are often chosen. However, in specific circumstances, impact performance testing may be required to confirm whether the steel pipe meets the requirements.

VI. Other key points:

a. Manufacturing process:

EN10219 and EN10210 steel pipe can be manufactured using either hot forming or cold forming methods, depending on the actual requirements.

the production process of EN10219 cold formed steel hollow section is much more simple than EN10210 hot formed steel hollow section. Yes, in some more demanding construction projects, the products usually supplied are EN10210 standard steel hollow sections. Instead of choosing EN10219 cold formed steel hollow sections. Among the thousands of projects supplied by BRISK STEEL, EN10210 steel pipe products are more trusted and favored by suppliers.

The amount of internal stress relief is closely related to temperature. When steel is heated to a lower temperature, it cannot produce new austenite and can only partially eliminate internal stress. When steel is heated to the austenite phase, it is what we call normalizing treatment. During the normalizing process, new austenite particle structures will be formed, and the internal stress reserved during the steel pipe forming process will be eliminated.

For welded steel pipes, internal stress may be one of the defects that cause pipe cracking. So, if people want to reduce the accident rate, they must eliminate the internal stress of the pipeline. By further normalizing processing, hard spots inside the steel pipe can be eliminated, achieving structural uniformity.

Usually, the carbon content of the hollow section of the structure does not exceed 0.22%.From the picture, we can clearly see that steel only enters the austenite phase when the temperature is above 850 ° C. So at this temperature, our hollow cross-section structure can achieve the best normalizing performance.

So, we can summarize the differences between EN10210 and EN10219 as follows:

1. The EN10219 standard is a standard for cold-formed steel hollow sections.

2. EN10210 standard is a standard for hot-formed steel hollow sections. The hot forming treatment also specifies two states of existence in the EN10210 standard.

2.1 One is the normalized state where stress is completely eliminated after normalizing treatment.

2.2 The second type is the state where stress is not completely normalized at lower temperatures. This hollow section will retain some residual stress, especially around the weld seam.

These two states are allowed in the EN10210 standard.

This is an experimental test result graph,

how do we distinguish between partially stress relieved steel pipes and fully normalized steel pipes we obtain? In the EN 10210 standard, steel pipes specified as S355NH must be fully normalized, with "N" representing normalization, while steel pipes specified as S355J2H can represent stress relief, but not fully normalized.

After normalizing, the EN 10210 steel hollow section has no residual stress, making it easier to process such a completely normalized hollow section. Significantly improved dimensional stability. The shape of square or rectangular hollow sections is formed again during the normalizing temperature treatment, and their corner contours are more compact, resulting in optimized performance. In addition to performance improvement, the corner radius of the hollow section has also been increased, and the aesthetics have also been improved. They provide a larger and more uniform welding plane for subsequent processing operations.

In summary, truly hot processed hollow profiles have more advantages than cold formed center profiles. We should be cautious of products that may meet standards but cannot provide a complete reduction in project risks. The specific method is that you can always ensure optimal performance in use by specifying a fully standardized hollow section and using the name S355NH.

on process and forming standards used.