ASTM A106 Pipe
SSM supplies ASTM A106 seamless carbon steel high temperature pipe
ASTM A106 Carbon Seamless Pipes Manufacturer
SSM supplies ASTM A106 seamless carbon steel pipes manufactured through hot rolling or cold drawing processes. These pipes are commonly used in high-temperature environments. The material composition primarily consists of carbon, manganese, phosphorus, sulfur, and silicon, with the carbon content typically not exceeding 0.35%. Grade B is the most frequently utilized type. Below, we will provide a detailed introduction to this product.
ASTM A106 seamless carbon steel supplier, SSM provides product parameters as shown in the following table:
| Items | Parameters |
| OD | Typically from 1/8 inch (3.18 mm) to 48 inches (1219 mm). |
| WT | Common wall thickness specifications include SCH 10, SCH 20, SCH 40, SCH 80, SCH 160, XXS (extra strong wall), etc. |
| Length | 20 feet (6 meters) or 40 feet (12 meters), according to customer requirements. |
| Grade | Grade A / Grade B / Grade C |
| Standards | ASTM A106 / ASME B36.10 M |
Chemical Composition & Mechanical Properties
SSM supplies seamless carbon pipes. The different carbon and manganese contents determine the strength, toughness, and application range of various grades of steel pipes. Higher carbon content generally means higher strength and is suitable for higher pressure and temperature applications. The appropriate manganese content can increase the hardness and stability of the material while maintaining good toughness and machinability.
| Element | ASTM A106 Grade A | ASTM A106 Grade B | ASTM A106 Grade C |
| Carbon (C) | 0.25% max | 0.30% max | 0.35% max |
| Manganese (Mn) | 0.27-0.93% | 0.29-1.06% | 0.29-1.06% |
| Phosphorus (P) | 0.035% max | 0.035% max | 0.035% max |
| Sulfur (S) | 0.035% max | 0.035% max | 0.035% max |
| Silicon (Si) | 0.10% min | 0.10% min | 0.10% min |
| Copper (Cu) | 0.40% max (residual) | 0.40% max (residual) | 0.40% max (residual) |
| Nickel (Ni) | 0.40% max (residual) | 0.40% max (residual) | 0.40% max (residual) |
| Chromium (Cr) | 0.40% max (residual) | 0.40% max (residual) | 0.40% max (residual) |
| Molybdenum (Mo) | 0.15% max (residual) | 0.15% max (residual) | 0.15% max (residual) |
| Vanadium (V) | 0.08% max (residual) | 0.08% max (residual) | 0.08% max (residual) |
Note: Total of Cr, Cu, Mo, Ni, and V shall not exceed 1%.
The mechanical properties of each grade also differ:
| Property | ASTM A106 Grade A | ASTM A106 Grade B | ASTM A106 Grade C |
| Minimum Tensile Strength (MPa) | 330 | 415 | 485 |
| Minimum Yield Strength (MPa) | 205 | 240 | 275 |
ASTM A106 Grade A, Grade B, and Grade C differ primarily in chemical composition and mechanical properties, determining their suitability for different applications. Grade B is the most commonly used grade, while Grade C is used for more demanding applications.
Grade A: Due to its lower carbon content and mechanical properties, this grade is typically used for applications requiring lower strength.
Grade B: This is the most commonly used grade. Due to its balanced strength and toughness, it is suitable for most standard applications, including high-temperature and high-pressure service.
Grade C: The highest carbon content and most robust mechanical properties, suitable for applications requiring higher strength, typically used in higher temperature and pressure environments.
Manufacturing & Tolerance Requirements
According to the requirements of ASTM A106, please note that steel pipes of NPS1-1/2 and below can be hot rolled or cold drawn, and NPS2 and above should be supplied hot rolled unless you have a request.
Hot-rolled pipes do not require heat treatment, but cold-drawn pipes should be heat treated at 1200 degrees Fahrenheit or 650 degrees Celsius or higher after the last process.
ASTM A106 Tolerances
Permissible Variations in Wall Thickness
- Thickness: The minimum wall thickness at any point shall not be more than 12.5% under the specified wall thickness.
Permissible Variations in Outside Diameter & Inside Diameter
- For pipe over 10 in. [250 mm] OD ordered as special outside diameter tolerance pipe, the outside diameter shall not vary more than 1% over or 1% under the specified outside diameter.
- For pipe over 10 in. [250 mm] ID ordered as inside diameter tolerance pipe, the inside diameter shall not vary more than 1% over or 1% under the specified inside diameter.
Advantages and Disadvantages of A106 Pipes
Choosing the ASTM A106 pipe should be based on carefully considering the application’s requirements and the trade-off between performance and cost.
Advantages:
ASTM A106 pipe is designed for high-temperature service and is suitable for boilers, heat exchangers, and steam piping applications. It has excellent mechanical properties, including high tensile strength and yield strength, ensuring its durability and long life. Seamless construction ensures uniformity of structure and reduces the risk of leaks and weak points, which is especially important for high-pressure applications.
Disadvantages:
Due to the manufacturing process and material requirements, ASTM A106 seamless pipe may be more expensive than welded pipe. ASTM A106 pipe is not designed explicitly for cryogenic service, which may limit its use in cryogenic or very cryogenic applications. Its corrosion resistance may be better than that of a stainless steel pipe and may require additional coatings or treatments in highly corrosive environments.
Applications of A106 Pipes
- Petroleum and Petrochemical Industries
- Power Plants
- Industrial Piping Systems
- Construction and Engineering
- Oil and Gas Transmission
- Marine Applications
- HVAC Systems
- Water Treatment Plants
- Automotive Industry
- Food and Beverage Industry
Comparison of ASTM A106 and ASTM A53 Pipes
ASTM A106 and ASTM A53 pipes differ in applications, materials, chemical composition, mechanical properties, and testing requirements. ASTM A106 is primarily used in high-temperature and high-pressure environments, while ASTM A53 is used for general industrial purposes and structural piping. Which pipe to choose depends on your specific needs and operating conditions.
| Attribute | ASTM A106 | ASTM A53 |
| Application and Use | High temperature and high pressure service, suitable for refineries, chemical plants, power plants. Commonly used in boilers, heat exchangers, steam pipes. | General industrial applications and structural piping, suitable for low and medium temperature conditions. Commonly used for water, natural gas, steam, and air transport, as well as mechanical and building structures. |
| Manufacturing Process | Seamless (SMLS), ensures integrity under high pressure and temperature. | Seamless (SMLS) and Welded (ERW, continuous weld), suitable for general use. |
| Grades | Grade A, Grade B, Grade C. | Grade A, Grade B. |
| Chemical Composition | Grade B: Carbon (≤0.30%), Manganese (0.29-1.06%), Phosphorus (≤0.035%), Sulfur (≤0.035%). | Grade B: Carbon (≤0.30%), Manganese (≤1.20%), Phosphorus (≤0.050%), Sulfur (≤0.045%). |
| Mechanical Properties | Grade B: Tensile Strength (≥415 MPa), Yield Strength (≥240 MPa). | Grade B: Tensile Strength (≥415 MPa), Yield Strength (≥240 MPa). |
| Testing and Inspection | Requires extensive testing such as hydrostatic testing, ultrasonic testing, eddy current testing, ensuring the integrity and performance of seamless pipes. | Requires hydrostatic testing; welded pipes require weld seam quality testing such as X-ray testing. |
| Standards and Dimensions | Typically follows dimensions and tolerances specified by ASME B36.10M. | Typically follows dimensions and tolerances specified by ASME B36.10M. |
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