DIN 2394 St52-3 Sizing Steel Pipe Welded And Sized Welded Steel Tube For Precision Equipment
DIN 2394 RSt34-2 RSt37-2 St44-2 St52-3 Sizing Steel Pipe Welded And Sized Welded Steel Tube For Welded Equipment
Material
DIN 2394 specifies the requirements for welded and sized Welded steel tubes used in various applications, particularly in Welded equipment. The steel grades covered under this standard include RSt34-2, RSt37-2, St44-2, and St52-3, each with distinct properties suitable for different engineering needs.
Specification
The specification outlines the dimensions, tolerances, and mechanical properties required for Welded steel tubes. These tubes are designed for high Welded applications, ensuring that they meet stringent quality and performance standards.
Key Features
- High Welded: Manufactured to tight tolerances for exact fit and function.
- Welded Construction: Ensures structural integrity and strength.
- Versatile Applications: Suitable for various industries including automotive, machinery, and construction.
- Corrosion Resistance: Depending on the grade, some tubes offer enhanced resistance to corrosion.
Chemical Composition
| Steel Grade | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Cr (%) | Ni (%) | Mo (%) |
|---|---|---|---|---|---|---|---|---|
| RSt34-2 | 0.12 | 0.25 | 1.20 | 0.045 | 0.045 | - | - | - |
| RSt37-2 | 0.17 | 0.25 | 1.20 | 0.045 | 0.045 | - | - | - |
| St44-2 | 0.20 | 0.25 | 1.50 | 0.045 | 0.045 | - | - | - |
| St52-3 | 0.22 | 0.25 | 1.60 | 0.045 | 0.045 | 0.50 | 0.50 | 0.10 |
Mechanical Properties
| Steel Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Hardness (HB) |
|---|---|---|---|---|
| RSt34-2 | 235 | 340-470 | 26 | 120-160 |
| RSt37-2 | 235 | 340-470 | 26 | 120-160 |
| St44-2 | 290 | 430-580 | 22 | 140-180 |
| St52-3 | 350 | 490-630 | 22 | 160-200 |
Steel Grade
The steel grades RSt34-2, RSt37-2, St44-2, and St52-3 are commonly used in the manufacturing of Welded steel tubes. Each grade offers unique properties that cater to specific application requirements.
Application
These Welded steel tubes are widely used in:
- Automotive Industry: For structural components and chassis.
- Machinery Manufacturing: In hydraulic systems and machine frames.
- Construction: For scaffolding and structural supports.
- Aerospace: In components requiring high strength-to-weight ratios.
Possible Alternative Grades
In addition to the specified grades, alternative grades that may be considered include:
- S235JR: A general-purpose structural steel.
- S275JR: Offers higher yield strength than S235JR.
- S355J2: Known for its high strength and good weldability.
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