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Tianjin lefin Industrial
TIANJIN LEFIN STEEL GROUP containing Tianjin lefin Industrial Co.,Ltd. 、Tianjin lefin steel import & export Co.,Ltd and Tianjin Shengqifeng International Trading Co., Ltd. -
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Steel Pipe Processing
Our main products include 1/2inch to 16 inch ERW PIPE/GI PIPE which has been produced according to BS1387/ASTM A53/EN10219/EN10255/EN10217 Standard -
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Our steel pipes are suitable for oil, natural gas, shipbuilding, chemical industry, water conservancy, electrical, steel structure, construction and other related fields.
Our main products include 1/2inch to 16 inch ERW PIPE/GI PIPE which has been produced according to BS1387/ASTM A53/EN10219/EN10255/EN10217 Standard
Our main products include 1/2inch to 16 inch ERW PIPE/GI PIPE which has been produced according to BS1387/ASTM A53/EN10219/EN10255/EN10217 Standard
Has rich experience in steel pipe processing, can be customized according to customer requirements according to the drawing and sample processing, assist in the development of new products.
fiji EN 10219 S235JHR Steel Tubes
Category:
Product Description
EN 10219 S235JRH – Steel Tubes (Cold-Formed Welded)
Standard & Specification
EN 10219 is the European standard that specifies the technical delivery conditions for cold-formed welded structural hollow sections (circular, square, and rectangular) made of non-alloy and fine-grain steels.
S235JRH is the steel grade designation under this standard.
Steel Grade: S235JRH
S235: Indicates the minimum yield strength of 235 MPa (at room temperature, ≤16 mm thickness).
J: Specifies the impact energy requirement (27 J at 0°C).
R: Indicates that the steel is cold-formed (rolled).
H: Denotes that the material is intended for hollow structural sections.
Chemical Composition (Approximate, % By Weight)
| Element | Carbon (C) | Silicon (Si) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) | Nitrogen (N) |
| Content | 0.17 | - | 1.4 | 0.045 | 0.045 | 0.009 |
The steel has a low carbon content, can helps to improve the weldability of the steel. It reduces the risk of hardening and cracking during the welding process.
It may contain small amounts of other alloying elements such as manganese , silicon , and sulfur and phosphorus. These elements help to refine the grain structure of the steel, improve its strength, and enhance its toughness.
Mechanical Properties
| Property | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Impact Energy (J) |
|---|---|---|---|---|
| Value | ≥235(Nominal thickness≤ 16mm) | 360-510(Nominal thickness＜3mm) | ≥24 | ≥27 (at 0°C) |
Suitable for structural applications where moderate strength and good ductility are required.
The yield strength is at least 235 MPa. This is the stress level at which the steel starts to deform plastically. It means that the steel can support loads up to this level without permanent deformation.
The tensile strength of S235JRH steel is in the range of 360 - 510 MPa. This is the maximum stress that the steel can withstand before it breaks. The relatively wide range of tensile strength is due to the variations in the manufacturing process and the specific composition of the steel.
The elongation at break is typically around 24%. This indicates the ductility of the steel. It means that the steel can stretch to about 24% of its original length before it fractures. This ductility is important for applications where the steel may be subjected to bending or other types of deformation.
Manufacturing & Processing
Cold-formed and welded into hollow sections.
Heat treatment (if required) improves mechanical properties.
Surface condition: Typically supplied with a mill finish or galvanized for corrosion resistance.
Applications
Construction: Building frames, bridges, support structures.
Infrastructure: Transmission towers, scaffolding.
Industrial: Machinery frames, storage systems.
Cold-forming suitability: Ideal for bending and welding.
Conclusion
EN 10219 S235JRH is a versatile, weldable, and durable steel grade ideal for structural applications where cold-forming and impact resistance are crucial. Its balanced properties make it a popular choice in European construction and engineering industries.
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Mob: +8615122229899(whatspp)
Phone: +86 22 58171905
Fax: +86 22 58171902
E-mail:info@lefinsteel.com
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