DIN 2391 ST52 Seamless Precision Steel Tubes
Introduction
DIN 2391 ST52 seamless precision steel tubes are precision-engineered tubes that find applications in various industries including automotive, mechanical, and hydraulic systems. These tubes are known for their excellent performance in high-pressure and high-temperature environments.
Material and Specification
The DIN 2391 ST52 tubes are made from low carbon steel and are characterized by their high strength and durability. These tubes are cold drawn and have a precise dimensional tolerance on both the inside and outside diameters. The tubes are available in various sizes, lengths, and thicknesses to suit different application requirements.
Key Features
The key features of DIN 2391 ST52 seamless precision steel tubes are as follows:
High precision and accuracy in dimensions
Excellent surface finish
High strength and durability
Good machinability
Resistance to corrosion
Suitable for high-pressure and high-temperature applications
Chemical Composition
| Element | Chemical Composition (%) |
| C (Carbon) | 0.22 Max |
| Si (Silicon) | 0.55 Max |
| Mn (Manganese) | 1.60 Max |
| P (Phosphorus) | 0.025 Max |
| S (Sulfur) | 0.025 Max |
Mechanical Properties
| Property | Value |
| Tensile Strength (Rm) | 580-620 MPa |
| Yield Strength (Rp0.2) | 420-470 MPa |
| Elongation (A5) | 15% Min |
| Impact Energy (KV) | 27 J Min |
| Hardness (HB) | 170-210 HB |
Steel Grade
The steel grade used in DIN 2391 ST52 seamless precision steel tubes is ST52, which is a low carbon steel with excellent mechanical properties. This grade of steel offers good weldability, machinability, and toughness, making it suitable for various industrial applications.
Application
DIN 2391 ST52 seamless precision steel tubes are widely used in the following applications:
Hydraulic systems
Automotive industry
Mechanical engineering
Power generation plants
Pressure piping systems
Heat exchangers
Possible Alternative Grades
Although DIN 2391 ST52 seamless precision steel tubes offer excellent properties, there are alternative grades that can be considered depending on specific application requirements. Some common alternative grades include:
ASTM A519 Grade 1026
EN 10305-1 E355
JIS G3445 STKM13C
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