ASTM A210 specification covers minimum wall thickness, seamless medium carbon steel, boiler tubes and boiler flues, including safe ends, arch and stay tubes, and superheater tubes. This type is not suitable for safe ending by forge welding. The steel tubing sizes and thicknesses usually furnished to this specification are 1/2 in. to 5 in. [12.7 to 127 mm] in outside diameter and 0.035 to 0.500 in. [0.9 to 12.7 mm], inclusive, in minimum wall thickness. Steel tubing having other with all other requirements of this specification.
Mechanical properties requirements do not apply to steel tubing smaller than 1/8 in. [3.2 mm] in inside diameter or 0.015 in. [0.4 mm] in thickness.
When these products are to be used in applications conforming to ISO Recommendations for Boiler Construction, the requirements of Specification ASTM A 520 , shall supplement and supersede the requirements of this specification.
The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining value from the two systems may result in nonconformance with the specification. The inch-pound units shall apply unless the “m” designation of this specification is specified in the order.
ASTM A210 tubing is a medium carbon steel Seamless Tubing used in boilers, boiler flues, super heaters, ASTM A210 / ASME SA210 is available in A210 Grade A1, and A210 Grade C. The ASTM A210 Specifications are listed below with the Chemical Composition and Mechanical Properties.
ASTM A210 boiler tube chemical composition (%)
| Grade | C(Max) | Mn | Si(Min) | P(Max) | S(Max) |
|---|---|---|---|---|---|
| A1 | 0.27 | Max.0.93 | 0.1 | 0.035 | 0.035 |
| C | 0.35 | 0.29-1.06 | 0.1 | 0.035 | 0.035 |
ASTM A210 boiler tube mechanical properties
| Grade | Tensile Strength(Mpa) | Yield Strength(Mpa) | Elongation (%) |
|---|---|---|---|
| A1 | ≥ 415 | ≥ 255 | ≥ 30 |
| C | ≥ 485 | ≥ 275 | ≥ 30 |
ASTM A210 boiler tube wall thickness & tolerance
| Pcorcess | Outside Diameter , mm | Tolerance, % |
|---|---|---|
| Hot rolled | OD≤101.6 | -0.5 |
| 101.6＜OD≤127 | -0.33333333333333 | |
| Cold Drawn | OD＜25.4 | ±0.10 |
| 25.4≤OD≤38.1 | ±0.15 | |
| 38.1＜OD＜50.8 | ±0.20 | |
| 50.8≤OD＜63.5 | ±0.25 | |
| 63.5≤OD＜76.2 | ±0.30 | |
| 76.2≤OD≤101.6 | ±0.38 | |
| 101.6＜OD≤127 | -0.59375 |
ASTM A210 / A210M Tube Hydrostatic Test Pressures
| Hydrostatic Test Pressures | |
|---|---|
| Outside Diameter of Tube, in. [mm] | Hydrostatic Test Pressure, psi [MPa] |
| Under 1 [25.4] | 1000 [7] |
| 1 to 11⁄2 [25.4 to 38.1], excl | 1500 [10] |
| 11⁄2 to 2 [38.1 to 50.8], excl | 2000 [14] |
| 2 to 3 [50.8 to 76.2], excl | 2500 [17] |
ASTM A210 / A210M Flattening Test
One flattening test shall be made on specimens from each end of one finished tube from each lot, but not the one used for the flaring test. Tears or breaks occurring at the 12 or 6 o’clock positions on Grade C tubing with sizes of 2.375 in. [60.3 mm] in outside diameter and smaller shall not be considered a basis for rejection.
One flaring test shall be made on specie- men from each end of the one finished tube from each lot, but not the one used for the flattening test.
Ordering Information
Orders for ASTM A210 / A210M, ASME SA210 should include the following, as required, to describe the desired material adequately:
- Quantity (feet, meters, or number of lengths),
- Name of material (seamless tubes),
- Grade,
- Manufacture (hot-finished or cold-finished),
- Size (outside diameter and minimum wall thickness),
- Length (specific or random),
- Optional requirements,
- Test report required (see section on Certification of Specification A 450/A 450M),
- Specification designation,
- Special requirements.
When these products are to be used in applications conforming to ISO Recommendations for Boiler Construction, the requirements of Specification ASTM A 520 , shall supplement and supersede the requirements of this specification.
The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining value from the two systems may result in nonconformance with the specification. The inch-pound units shall apply unless the “m” designation of this specification is specified in the order.
Note:
- Mill test certificates will be issued according to EN10204.3 3.1 or 3.2
- The tubes Shall be Seamless, and the testing shall be as per A 450 / A450M.
Delivery Condition:
- Annealed, Normalized, Normalized and Tempered
- Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.
Surface treatment:
- Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting
Application:
- For high, middle, low pressure boiler and pressure purpose
