Chemical Composition: ASTM A209 Grade T1A alloy steel tubes typically contain elements such as carbon (C), manganese (Mn), silicon (Si), and molybdenum (Mo). These alloying elements enhance the tubes' high-temperature strength and resistance to corrosion.
High-Temperature Application: Grade T1A tubes are suitable for use in applications where elevated temperatures and high pressures are encountered, such as in power generation, petrochemical, and chemical processing industries.
Seamless Manufacturing: ASTM A209 Grade T1A tubes are typically manufactured using a seamless process to ensure uniform material properties and the ability to withstand high-temperature and high-pressure environments.
Chemical Composition Of ASTM A209 Grade T1a
| Element | Composition, % |
| Grade T1a | |
| Carbon | 0.15–0.25 |
| Manganese | 0.30–0.80 |
| Phosphorus, max | 0.025 |
| Sulfur, max | 0.025 |
| Silicon | 0.10–0.50 |
| Molybdenum | 0.44–0.65 |
Tolerances of Length
| Method of Manufacture |
Specified Outside Diameter, in.[mm] |
Cut Length, in. [mm] | |
| Over | Under | ||
| Seamless, hot-finished | All sizes | 3 ⁄ 16 [5] | 0 [0] |
| Seamless, cold-finished | Under 2 [50.8] | 1 ⁄ 8 [3] | 0 [0] |
| 2 [50.8] or over | 3 ⁄ 16 [5] | 0 [0] | |
| 2 [50.8] or over | 3 ⁄ 16 [5] | 0 [0] | |
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