Pressure Tubes
- Carbon & Carbon Alloy Steel
- Stainless Steel
- Copper & Nickel Alloy
- Heat Efficiency Tubes
- Pipe Fittings
- Pipe Flanges
- Gasket, Stud Bolt &Nut
- Industrial Valves
01
ASTM A210/A210M - Standard Specification for Seamless Medium-Carbon Steel Boiler and Super-heater Tubes
Ordering Information
Orders must specify:
● Quantity (length/number of tubes)
● Material grade (A-1 or C)
● Dimensions (outer diameter, wall thickness)
● Length (specific or random)
● Optional requirements (e.g., hydrostatic testing, non-destructive testing, certification)
Materials and Manufacture
- Steel-making Process: Open-hearth, electric furnace, or basic oxygen process.
- Heat Treatment: Tubes must be heat-treated (annealing, normalizing, or stress relieving).
Chemical Composition
| Element | Grade A-1 (%) | Grade C (%) |
| Carbon | 0.27 max | 0.35 max |
| Manganese | 0.29–1.06 | 0.29–1.06 |
| Phosphorus | 0.035 max | 0.035 max |
| Sulfur | 0.035 max | 0.035 max |
| Silicon | ≥0.10 | ≥0.10 |
Mechanical Properties
| Property | Grade A-1 | Grade C |
| Tensile Strength (min) | 415 MPa (60,000 psi) | 485 MPa (70,000 psi) |
| Yield Strength (min) | 255 MPa (37,000 psi) | 275 MPa (40,000 psi) |
| Elongation (min) | ≥30% (2 in.) | ≥30% (2 in.) |
Test Requirements
- Tensile Test: One test per lot (50 tubes max).
- Flattening Test: For tubes < 2⅜ in. (60.3 mm) OD.
- Hydrostatic or NDT: Each tube must undergo hydrostatic testing or non-destructive electric testing.
- Hardness Test: Optional, if specified.
Inspection & Certification
- Manufacturer must provide certification of compliance.
- Third-party inspection may be required if specified.
Marking
Tubes must be marked with:
- Manufacturer’s name or trademark
- Specification number (A210/A210M)
- Grade (A-1 or C)
- Heat number
- Size
Keywords
Seamless steel tubes, boiler tubes, super-heater tubes, medium-carbon steel, pressure applications.
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