DIN 2458 ST37.2 Welded Round Tube ERW Welded Steel Tube For General Purpose
DIN 2458 ST37.2 Welded Round Tube ERW Welded Steel Tube For General Purpose
Material
DIN 2458 ST37.2 is a standard specification for welded round tubes made from low carbon steel. This material is commonly used in various engineering and construction applications due to its excellent weldability and machinability.
Specification
The specification outlines the requirements for ERW (Electric Resistance Welded) steel tubes, which are produced by welding flat steel strips into a tubular shape. The tubes are characterized by their round cross-section and are available in various diameters and wall thicknesses.
Key Features
- Weldability: Excellent for welding processes.
- Machinability: Suitable for machining operations.
- Versatility: Applicable in various industries including construction, automotive, and manufacturing.
- Cost-Effective: Economical choice for general-purpose applications.
Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.12 - 0.20 |
| Manganese (Mn) | 0.30 - 0.60 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.045 |
| Silicon (Si) | ≤ 0.40 |
| Iron (Fe) | Balance |
Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (Rp0.2) | ≥ 235 MPa |
| Tensile Strength (Rm) | 370 - 510 MPa |
| Elongation (A) | ≥ 26% |
| Hardness (HB) | ≤ 160 |
Steel Grade
The steel grade for DIN 2458 ST37.2 is classified as S235JR according to EN 10025, which indicates its suitability for structural applications.
Application
DIN 2458 ST37.2 welded round tubes are widely used in:
- Structural applications in buildings and bridges.
- Manufacturing of machinery and equipment.
- Automotive components.
- General engineering applications.
Possible Alternative Grades
- S235JRG2: Similar mechanical properties, suitable for structural applications.
- S275JR: Higher yield strength, used in more demanding applications.
- ST52.0: Offers higher tensile strength for specialized applications.
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