DIN 10220 ST37 High Strength Steel Tube Seamless Precision Steel Tubes For General Purpose
DIN 10220 ST37 ST45 ST52 High Strength Steel Tube Seamless Precision Steel Tubes for General Purpose
Material
DIN 10220 specifies the requirements for seamless precision steel tubes made from high-strength steel grades such as ST37, ST45, and ST52. These tubes are widely used in various engineering applications due to their excellent mechanical properties and versatility.
Specification
The seamless precision steel tubes conform to the DIN 10220 standard, which outlines the dimensions, tolerances, and quality requirements for these products. The tubes are typically available in various diameters and wall thicknesses to suit different applications.
Key Features
- High Strength: Excellent tensile and yield strength properties.
- Seamless Construction: Enhanced durability and resistance to pressure.
- Precision Manufacturing: Tight tolerances for dimensional accuracy.
- Corrosion Resistance: Suitable for various environments.
- Versatile Applications: Ideal for structural and mechanical applications.
Chemical Composition
| Steel Grade | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Cr (%) | Ni (%) | Mo (%) |
|---|---|---|---|---|---|---|---|---|
| ST37 | 0.17 | 0.15 | 1.20 | 0.045 | 0.045 | 0.25 | 0.25 | 0.10 |
| ST45 | 0.22 | 0.15 | 1.60 | 0.045 | 0.045 | 0.25 | 0.25 | 0.10 |
| ST52 | 0.22 | 0.15 | 1.60 | 0.045 | 0.045 | 0.25 | 0.25 | 0.10 |
Mechanical Properties
| Steel Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Hardness (HB) |
|---|---|---|---|---|
| ST37 | 235 | 360-510 | 26 | 120-160 |
| ST45 | 245 | 370-540 | 24 | 130-170 |
| ST52 | 355 | 490-630 | 22 | 150-190 |
Steel Grade
- ST37: Low carbon steel with good weldability and machinability.
- ST45: Medium carbon steel offering higher strength and hardness.
- ST52: High carbon steel with excellent tensile strength and toughness.
Application
These seamless precision steel tubes are used in a variety of applications, including:
- Structural components in construction and engineering.
- Hydraulic systems and machinery.
- Automotive and transportation industries.
- Oil and gas pipelines.
- General mechanical engineering.
Possible Alternative Grades
- S235: A structural steel grade with similar properties to ST37.
- S355: A higher strength structural steel that can be used in place of ST52.
- EN 10210: A European standard for hot-finished structural hollow sections, which may serve as an alternative.
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