DIN EN 10297 Seamless Steel Tube: Seamless Circular Steel Tubes For Mechanical Applications
In the realm of mechanical engineering, the utilization of high-quality materials is pivotal to ensuring the structural integrity and reliability of various components and systems. The DIN EN 10297 standard plays a significant role in defining the specifications for seamless circular steel tubes, outlining their material composition, mechanical properties, and intended applications. This article delves into the details of DIN EN 10297, shedding light on its material specifications, chemical compositions, mechanical properties, applicable steel grades, and diverse applications.
Material and Specification
| Specification | DIN EN 10297-1 |
| Tube Type | Seamless Circular Steel Tubes |
| Dimensions | Outer diameter: 21.3 - 660 mm |
| | Wall thickness: 2 - 60 mm |
| Length | Customizable |
| Steel Grade | E235, E275, E315, E355 |
| Delivery Conditions | +C (BK), +SR (BKW), +A (GBK), +N (NBK) |
Chemical Composition
The chemical composition of the steel used in DIN EN 10297 seamless circular steel tubes is crucial in determining the material's properties and behavior under various conditions. The following table outlines the typical chemical composition (in weight percentages) for the specified steel grades.
| Steel Grade | C (max) | Si (max) | Mn | P (max) | S (max) |
| E235 | 0.17 | 0.35 | 1.20-1.60 | 0.025 | 0.025 |
| E275 | 0.21 | 0.35 | 1.40-1.80 | 0.025 | 0.025 |
| E315 | 0.21 | 0.30-0.60 | 1.50-2.00 | 0.025 | 0.025 |
| E355 | 0.22 | 0.30-0.60 | 1.50-2.00 | 0.025 | 0.025 |
Mechanical Properties
The mechanical properties of the seamless circular steel tubes defined by DIN EN 10297 are critical in evaluating their suitability for specific applications. The following table showcases the minimum values for various mechanical properties at room temperature (+20°C).
| Steel Grade | Yield Strength (ReH) MPa (min) | Tensile Strength (Rm) MPa | Elongation (%) | Impact Energy (J) |
| E235 | 235 | 360-500 | 25 | 27 |
| E275 | 275 | 410-560 | 23 | 27 |
| E315 | 315 | 490-630 | 21 | 27 |
| E355 | 355 | 490-630 | 22 | 27 |
Steel Grades and Applications
DIN EN 10297 seamless circular steel tubes come in a variety of steel grades, each tailored to specific mechanical and structural requirements. The selection of the appropriate steel grade is paramount in ensuring optimal performance in various applications. Here is a glimpse into the steel grades and their common applications:
- E235: Used for machinery, automotive components, and general engineering applications.
- E275: Ideal for applications requiring enhanced strength, such as cranes and bridges.
- E315: Suited for applications demanding elevated yield and tensile strength, including pressure vessels.
- E355: Employed in high-stress applications like hydraulic cylinders and machinery parts subject to heavy loads.
Applications
DIN EN 10297 seamless circular steel tubes find their applications across a wide spectrum of industries and engineering domains. Some common applications include:
- Mechanical and structural components in machinery and equipment.
- Automotive parts such as axles, steering columns, and drive shafts.
- Construction of pipelines and pressure vessels in the energy sector.
- Manufacturing of precision components in aerospace and defense industries.
- Hydraulic systems, cylinders, and other critical components in industrial machinery.
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