St 52-3 Seamless Pipes, Material Number:1.0570
PRODUCT DESCRIPTION
ST52-3 pipes are high-strength, durable, and weldable steel pipes, ideal for construction, automotive, hydraulic, and oil & gas industries.PRODUCT TYPES
ST52-3 Pipes: Overview
ST52-3 is a high-strength structural steel known for its excellent weldability, machinability, and high tensile strength. ST52-3 pipes are commonly used in industries requiring durable, high-performance piping solutions for transporting fluids, gases, and in applications involving high pressure and mechanical stress. These pipes are frequently used in construction, hydraulics, and automotive industries.
Mechanical Composition (in %)
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.22 max |
| Silicon (Si) | 0.55 max |
| Manganese (Mn) | 1.60 max |
| Phosphorus (P) | 0.035 max |
| Sulfur (S) | 0.035 max |
| Chromium (Cr) | 0.30 max |
| Nickel (Ni) | 0.30 max |
| Molybdenum (Mo) | 0.15 max |
| Copper (Cu) | 0.50 max |
Physical Properties
- Density: 7.85 g/cm³ (7850 kg/m³)
- Tensile Strength (Rm): 490–630 MPa
- Yield Strength (Rp0.2): 355 MPa (min)
- Elongation (A): ≥ 22% (for thickness up to 20 mm)
- Hardness (HB): 160–190
Machinability
ST52-3 pipes are made from a steel alloy known for its good machinability. The material is suitable for turning, drilling, and milling, offering balanced strength and ductility. Proper machining techniques, such as using high-speed steel (HSS) or carbide tools, will help optimize performance. The material's manganese content enhances its machinability, and its lower carbon content helps reduce wear during machining operations.
Machining Tips:
- Use HSS or carbide cutting tools for best performance.
- Maintain moderate cutting speeds to minimize tool wear.
- Proper cooling is essential during machining to maintain tool life.
Weldability
ST52-3 steel offers excellent weldability due to its relatively low carbon content and balanced alloy composition. It is easily welded using various conventional methods, such as MIG, TIG, and arc welding.
Welding Guidelines:
- Preheating is not usually necessary for sections under 30 mm thickness.
- Use low-hydrogen electrodes for better weld quality.
- Post-weld heat treatment might be required for thicker sections to avoid cracking.
Usage Areas
ST52-3 pipes are commonly used in industries that require high-strength, durable, and weldable materials for piping systems. Some common applications include:
- Construction Industry: Structural piping, columns, and frames.
- Automotive Industry: Hydraulic pipes, suspension parts, and structural components.
- Oil and Gas Industry: Pipeline systems and transportation of high-pressure fluids.
- Hydraulic Systems: Used in machinery and equipment that require high-strength hydraulic piping.
- Heavy Equipment: Used in cranes, lifting equipment, and other heavy machinery.
Industries Using ST52-3 Pipes
- Construction Industry: For structural components, columns, and beams.
- Automotive Industry: Hydraulic systems, suspension, and structural pipes.
- Hydraulic and Pneumatic Systems: Used in heavy machinery and equipment.
- Oil and Gas Industry: Piping systems for oil, gas, and water transport.
- Manufacturing and Heavy Equipment: Hydraulic piping and support for various industrial equipment.
Key Advantages of ST52-3 Pipes
- High Tensile Strength: Suitable for load-bearing and high-pressure applications.
- Excellent Weldability: Easily welded using conventional techniques.
- Good Machinability: Allows for precise cutting and shaping.
- Durability: Long-lasting performance in harsh environments.
- Versatility: Suitable for various industrial applications, from construction to automotive and manufacturing.