ASTM A214 Gr.C Gr.1 Gr.2 Electric-Resistance-Welded Carbon Steel Tube for Heat-Exchanger and Condenser
Material
ASTM A214 is a specification for electric-resistance-welded carbon steel tubes intended for use in heat exchangers and condensers. These tubes are designed to withstand high pressures and temperatures, making them suitable for various industrial applications.
Specification
The specification outlines the requirements for the manufacturing, testing, and performance of the tubes. It ensures that the tubes meet specific mechanical and chemical properties necessary for their intended use.
Key Features
- Electric-Resistance Welding: Ensures strong and reliable welds.
- High Strength: Capable of withstanding high pressures and temperatures.
- Corrosion Resistance: Suitable for various environments, especially in heat exchangers.
- Versatile Applications: Used in power generation, chemical processing, and HVAC systems.
Chemical Composition
| Element | Gr.C (%) | Gr.1 (%) | Gr.2 (%) |
| Carbon (C) | 0.18 max | 0.20 max | 0.25 max |
| Manganese (Mn) | 0.60-0.90 | 0.60-0.90 | 0.60-0.90 |
| Phosphorus (P) | 0.035 max | 0.035 max | 0.035 max |
| Sulfur (S) | 0.025 max | 0.025 max | 0.025 max |
| Silicon (Si) | 0.10-0.40 | 0.10-0.40 | 0.10-0.40 |
Mechanical Properties
| Property | Gr.C | Gr.1 | Gr.2 |
| Yield Strength (ksi) | 30 min | 30 min | 35 min |
| Tensile Strength (ksi) | 50 min | 50 min | 55 min |
| Elongation (%) | 30 min | 30 min | 30 min |
| Hardness (Rockwell) | B70 max | B70 max | B70 max |
Steel Grade
The ASTM A214 specification includes several grades, with Gr.C, Gr.1, and Gr.2 being the most common. Each grade has specific mechanical and chemical properties tailored for different applications.
Application
The primary applications of ASTM A214 tubes include:
- Heat exchangers
- Condensers
- Boiler tubes
- Oil and gas processing
- Chemical processing industries
Possible Alternative Grades
While ASTM A214 is widely used, there are alternative grades that may be suitable depending on the specific requirements of the application. Some of these include:
- ASTM A53: Standard specification for pipe, suitable for welding and bending.
- ASTM A106: Seamless carbon steel pipe for high-temperature service.
- ASTM A179: Seamless cold drawn low carbon steel heat exchanger and condenser tubes.
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