Boiler Tube SA210 A1 is the standard covers seamless medium-carbon steel boiler and superheater tubes. Seamless medium carbon steel pipe for boiler tube and boiler flue pipe, including a minimum wall thickness of the security side, the dome, and the support tube and superheater tubes.
ASTM A210/ASME SA210 Standard Specification for Seamless Medium-Carbon Steel Boiler and Superheater Tubes
Chemical composition:
| Grade | C, max | Mn | Si, max | P, max | S, max |
| A1 | 0.27 | 0.93 | 0.10 | 0.035 | 0.035 |
| C | 0.35 | 0.29-1.06 | 0.10 | 0.035 | 0.035 |
Mechanical Properties:
| Grade | Tensile Strength, MPa, min | Yield Strength, MPa, min | Elongation (%), min |
| A1 | 415 | 255 | 30 |
| C | 485 | 275 | 30 |
Outside Diameter & Tolerance
| Process | Outside Diameter, mm | Tolerance, % |
| Hot Rolled | OD≤101.6 | +0.4/-0.8 |
| 101.6＜OD≤127 | +0.4/-1.2 | |
| 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 | +0.38/-0.64 |
Wall thickness & Tolerance
| Process | Outside Diameter, mm | Tolerance, % |
| Hot Rolled | OD≤101.6, WT≤2.4 | +40/-0 |
| OD≤101.6, 2.4＜WT≤3.8 | +35/-0 | |
| OD≤101.6, 3.8＜WT≤4.6 | +33/-0 | |
| OD≤101.6, WT>4.6 | +28/-0 | |
| Cold Drawn | OD≤38.1 | +20/-0 |
| OD>38.1 | +22/-0 |
ASTM A210 / A210M Tube Wall Thickness Tolerance
Seamless, Cold-Finished Tubes
Outside Diameter Wall thickness Tolerance %
In. (mm) Over (+) Under (-)
1 ½ (38.1) and under 20 0
Over 1½ (38.1) 22 0
ASTM A210 / A210M Tube Outside Diameter Tolerance
Cold-Finished Seamless Tubes
Outside Diameter Permissible Variations In. (mm)
In. (mm) Over (+) Under (-)
Under 1 (25.4) 0.004 (0.10) 0.004 (0.10)
1 to 1 ½ (25.4 to 38.1), Incl 0.006 (0.15) 0.006 (0.15)
Over 11⁄2 to 2 (38.1 to 50.8), Excl 0.008 (0.20) 0.008 (0.20)
2 to 21⁄2 (50.8 to 63.5), Excl 0.010 (0.25) 0.010 (0.25)
21⁄2 to 3 (63.5 to 76.2), Excl 0.012 (0.30) 0.012 (0.30)
ASTM A210 / A210M Tube Cut Length Tolerance
Cold-Finished Seamless Tubes
Outside Diameter, Cut Length, in. (mm)
In. (mm) Over (+) Under (-)
All Sizes 3⁄16 [5] 0 [0]
Under 2 (50.8) 1⁄8 [3] 0 [0]
2 (50.8) and over 3⁄16 [5] 0 [0]
Under 2 (50.8) 1⁄8 [3] 0 [0]
2 (50.8) and over 3⁄16 [5] 0 [0]
These permissible variations in length apply to tubes before bending. They apply to cut lengths up to and including 24 ft [7.3 m]. For lengths greater than 24 ft [7.3 m], the above over-tolerances shall be increased by 1⁄8 in. [3 mm] for each 10 ft [3 m] or fraction thereof over 24 ft or 1⁄2 in. [13 mm], whichever is the lesser.
ASTM A210 / A210M Tube Hydrostatic Test Pressures
Each tube shall be subjected to the hydrostatic pressure test, or instead of this test, a nondestructive test may be used when specified by the purchaser.
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]
BS3605 Austenitic stainless steel pipes and tubes for pressure purposes
- A192/A192M-91(1996) Specification for Seamless Carbon Steel Boiler Tubes for High-Pressure Service
- A209 A209/A209M-98 Specification for Seamless Carbon-Molybdenum Alloy-Steel Boiler and Superheater Tubes
- A210 A210/A210M-96 Specification for Seamless Medium-Carbon Steel Boiler and Superheater Tubes
- A250 A250/A250M-95 Specification for Electric-Resistance-Welded Ferritic Alloy-Steel Boiler and Superheater Tubes
- ASTM B622 Seamless ferritic and austenitic alloy-steel boiler, superheater, and heat-exchanger tubes
- A213 A213/A213M-99a Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
- A249 A249/A249M-98e1 Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes
Low-carbon steel tubes for heat exchangers and boilers
ASTM A179, DIN17175, BS3602, NFA A49215, JIS G 3461, A192, A210 Grade A1,A210 Grade C, ASTM A556, A214, DIN17177, BS 3059, NFA A49242, JIS G3461, A226, GB3087, GB5310, ASME SA106, ASME SA333, ASME SA335, DIN17175, EN10216-2
Alloy steel tubes for heat exchangers and boilers alloy steel tubes used for boiler use
- ASTM A209, T1,T1A, T1b
- ASTM A199,T4,T5,T9,T11,T21,T22,T91
- ASTM A213,T2, T5,T5b,T5c, T9, T11, T12, T17,T21,T22,T91,T92
- ASTM A334, Grade1,3,6,7,8,91,112. DIN17173, BS3603, JIS G3464
- BS3606, JIS G3462
- DIN17176, BS3604
- ASME SA 333: SA333 Grade1, SA333 Grade 6
- ASME SA335: SA335 P11, SA335 P12, SA335 P22, SA335 P5, SA335 P1, SA335 P9,
- DIN 17175: St45.8, 15Mo3, 16Mo3, 13CrMo44, 10CrMo910, 14MoV6-3, X10CrMoVNb9-1 = T91 / P91
- JIS G3461: STB 340, STB 410
- EN 10216-1: P195 TR1, P235 TR2
- ASME SA 106: SA 106B, SA 106C10, 20, 20G, 20MnG, 25MnG, 15CrMoG, 12Cr2MoG, 12Cr1MoVG, 10Cr9Mo1VNb, SA106B, SA106C, SA210A1, SA210C, SA333 I, SA333 VI, SA335 P5, SA335 P11, SA335 P12, SA335P22, SA335 P91, SA335 P92, 15NiCuMoNb5-6-4, 1Cr18Ni9 (TP304H, X6CrNi18-10), 1Cr19Ni11Nb (TP347H, X7CrNiNb18-10), TP321H, TP347HFG, CODE CASE 2328-1 (S30432), TP310HCbN, 20G, 12CrMoG, 15CrMoG, 12Cr1MoVG, 25MnG, 15MoG, 12Cr2MoG
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