TU 14-3-460-2003 Low Carbon Alloy Steel For High Pressure Boiler And Pipelines
TU 14-3-460-2003 20-PV Low Carbon Alloy Steel for High Pressure Boiler and Pipelines
Material Specification
TU 14-3-460-2003 20-PV is a low carbon alloy steel developed specifically for high-pressure boiler systems and pipeline applications. Known for its durability and resistance to high-temperature environments, this material is a preferred choice in heavy-duty industrial settings. The specification underlines the importance of both chemical composition and mechanical properties to ensure performance in demanding structural and mechanical contexts.
Key Features
- High Temperature Resistance: Ensures reliability in boiler and pipeline environments where temperatures can be extreme.
- Corrosion Resistance: Offers excellent resistance against corrosive substances commonly encountered in power generation units.
- Durability: Provides long-term stability and integrity in high-pressure applications.
- Weldability: Features excellent weldability, allowing for ease of fabrication and installation.
Chemical Composition
The chemical composition for TU 14-3-460-2003 20-PV low carbon alloy steel is crucial to its performance characteristics. The table below outlines the typical composition:
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.10 - 0.20 |
| Manganese (Mn) | 0.30 - 0.60 |
| Silicon (Si) | 0.15 - 0.40 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.025 |
| Chromium (Cr) | 0.30 - 0.60 |
| Molybdenum (Mo) | 0.08 - 0.15 |
| Vanadium (V) | 0.02 - 0.10 |
Mechanical Properties
To ensure the material meets the demands of high-pressure applications, the mechanical properties are stringently specified as follows:
| Property | Value |
|---|---|
| Tensile Strength | 450 - 600 MPa |
| Yield Strength | ≥ 290 MPa |
| Elongation | ≥ 22% |
| Impact Toughness | ≥ 27 Joules at -20°C |
Steel Grade
TU 14-3-460-2003 20-PV represents a unique grade optimized for specific industrial environments. Due to its engineered composition, it provides a balanced combination of strength, toughness, and corrosion resistance.
Application
This low carbon alloy steel is primarily utilized in:
- High-pressure boilers
- Steam pipelines
- Superheater and reheater systems in power plants
- Other high-temperature pressure vessel applications
Possible Alternative Grades
While TU 14-3-460-2003 20-PV is specifically designed for its noted applications, alternative grades may be considered based on availability, specific requirements, and other operational factors. Some possible alternatives include:
-
- A335 P11/P12: Other low alloy steel grades used in pressure environments.
- 15Mo3: Known for its similar temperature tolerance and pressure capabilities.
- ASTM A387 Gr11/12: Chromium-Molybdenum alloyed boiler steel for elevated service temperatures.
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