ST52 Seamless Circular Pipe Non Alloys Steels With Special Quality Requirements
ST52 Seamless Circular Pipe Non-Alloy Steels with Special Quality Requirements
Material Specification
ST52 seamless circular pipes are crafted from non-alloy steel, providing a balance of strength and ductility. These pipes are renowned for their excellent mechanical properties suited to a variety of structural and mechanical applications. The seamless design ensures a uniform, flaw-free construction that's pivotal for high-pressure scenarios and critical applications.
Key Features
- High Strength and Toughness: Ideal for demanding environments.
- Seamless Structure: Enhanced integrity and performance under stress.
- Weldability: Excellent weldability properties for easier fabrication.
- Versatility: Suitable for mechanical, structural, and automotive applications.
Chemical Composition
The chemical composition of ST52 is critical for its performance. Below is a typical analysis:
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.20 max |
| Silicon (Si) | 0.55 max |
| Manganese (Mn) | 1.60 max |
| Phosphorus (P) | 0.045 max |
| Sulfur (S) | 0.045 max |
Mechanical Properties
The mechanical properties are pivotal for assessing the pipe's performance under various conditions:
| Property | Value |
|---|---|
| Tensile Strength | 490 - 630 MPa |
| Yield Strength | ≥ 355 MPa |
| Elongation (% in 50 mm) | ≥ 22% |
| Impact Energy (ISO-V) | 27 J at -20°C |
Similar Standards and Steel Grades
The ST52 seamless pipe aligns with various international and national standards, making it interchangeable with several other grades. Similar grades include:
- ASTM: A519 Grade 1026
- EN: E355
- GOST: 20 or 20Mn
- JIS: STK490
- GB: Q345B
Applications
ST52 seamless circular pipes are extensively used across diverse industries due to their mechanical excellence and adaptability:
- Construction Industry: Used in structural frameworks and load-bearing applications.
- Mechanical Engineering: Employed in manufacturing parts like gears, shafts, and machinery segments.
- Automotive Industry: Utilized in steering components, suspension systems, and other critical automotive parts.
- Hydraulic Systems: Applies in hydraulic systems and cylinders due to its high-strength and corrosion resistance.
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