2023-09-13
ASTM A213/A213M Seamless Alloy Boiler Tube
| ASTM A213/A213M specification covers seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes. |
| Manufacture: tubes shall be made by the seamless process and shall be either hot finished or cold finished, as specified. Heat Treatment: full or isothermal anneal, normalize and temper. Inspection & Test: chemistry composition analysis, tensile test, hardeness test, flattening test, flaring test, NDT, surface inspection and dimension check. |
SA213 T5/T5b/T5c Alloy Steel Tube Chemical Composition
| Grade | C≤ | Mn | P≤ | S≤ | Si≤ | Mo |
| T5 | 0.15 | 0.30~0.60 | 0.025 | 0.025 | 1.0-2.0 | 0.45~0.65 |
| T5b | 0.15 max | 0.30~0.60 | 0.025 | 0.025 | 1.0-2.0 | 0.45~0.65 |
| T5c | 0.12 max | 0.30~0.60 | 0.025 max | 0.025 max | 0.50 max | 0.45~0.65 |
Alloy Steel T5/T5b/T5c Tube Mechanical Properties
| Grade | Tensile Strength, MPa | Yield Strength, MPa | Elongation, % | Hardness, HB |
| T5 | 415 min | 205 min | 30 min | 179 max |
| T5b | 415 min | 205 min | 30 min | 179 max |
| T5c | 415 min | 205 min | 30 min | 163 max |
Alloy Steel T5/T5b/T5c Seamless Tube Outside Diameter and Toleranc
| Hot rolled | Outside Diameter, mm | Tolerance, mm |
| OD≤101.6 | +0.4/-0.8 | |
| 101.6＜OD≤190.5 | +0.4/-1.2 | |
| 190.5＜OD≤228.6 | +0.4/-1.6 | |
| Cold Drawn | Outside Diameter, mm | Tolerance, mm |
| 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≤190.5 | +0.38/-0.64 | |
| 190.5＜OD≤228.6 | +0.38/-1.14 |
Wall thickness & Tolerance
| Hot rolled | Outside Diameter, mm | Tolerance, % |
| 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 | |
| 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 | Outside Diameter, mm | Tolerance, % |
| OD≤38.1 | +20/-0 | |
| OD>38.1 | +22/-0 |
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