ASTM A106 Grade B and Grade C High Pressure Seamless Boiler Steel Tubes
1. Product Description: ASTM A106 Grade B and Grade C High Pressure Seamless Boiler Steel Tubes are engineered for use in high-pressure boiler systems where reliability and safety are paramount. These tubes are manufactured from carbon steel and are seamless, providing uniform wall thickness and superior mechanical properties. The distinction between Grade B and Grade C lies in their respective mechanical property requirements, with Grade C offering higher strength for more demanding applications.
2. Product Parameters:
Parameter | Description |
Grades | ASTM A106 Grade B and Grade C |
Material | Carbon Steel (Seamless) |
Standard | ASTM A106 |
Size Range | Various diameters and wall thicknesses as per ASTM A106 |
Length | Standard lengths, customizable upon request |
Ends | Plain ends, beveled ends, threaded, or socket-weld ends |
Surface Treatment | As-rolled, annealed, or normalized |
3. Mechanical Properties:
Property | ASTM A106 Grade B Requirement | ASTM A106 Grade C Requirement |
Tensile Strength | ≥485 MPa (70,000 psi) | ≥485 MPa (70,000 psi) |
Yield Strength | ≥240 MPa (35,000 psi) | ≥310 MPa (45,000 psi) |
Elongation | ≥20% in 50 mm (2 in) | ≥20% in 50 mm (2 in) |
Hardness | Varies depending on heat treatment | Varies depending on heat treatment |
4. Chemical Composition:
Element | Typical Range (%) for ASTM A106 Grades |
Carbon | 0.29 - 0.36 |
Manganese | 0.35 - 0.60 |
Phosphorus | ≤ 0.025 |
Sulfur | ≤ 0.025 |
Silicon | ≤ 0.35 |
5. Product Uses:
- Boiler Tubes: Utilized in high-pressure boilers for steam generation.
- Superheater Tubes: Employed in the superheater sections of steam power plants.
- Heat Exchangers: Suitable for use in heat exchangers operating under high pressure and temperature.
- Pressure Vessels: Ideal for construction of high-pressure vessels and reactors.
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