ASTM A213 / ASME SA213 T5 Alloy Steel Seamless Tube for Boiler and Heat Exchanger Application
T5 is a specific designation used to describe a family of aluminum alloys. These alloys are primarily composed of aluminum, with other elements such as magnesium, manganese, and chromium added to enhance their properties. Because of high strength, excellent corrosion resistance, and good formability, they are commonly found in the construction of aircraft frames, automotive components, heat exchangers, and hydraulic systems.
| Trade Name | Grade | UNS # | Heater Tubes |
| 1 1/4 Chrome | T11 | K11597 | A213 / SA213 |
| 2 1/4 Chrome | T22 | K21590 | A213 / SA213 |
| 5 Chrome | T5 | K41545 | A213 / SA213 |
| 9 Chrome | T9 | K90941 | A213 / SA213 |
| T91 | T91 | K90901 | A213 / SA213 |
| T92 | T92 | K92460 | A213 / SA213 |
| Tube Sizes for Heat Exchangers & Condensers & Boiler |
| Outside Diameter | | BWG |
| 25 | 22 | 20 | 18 | 16 | 14 | 12 | 10 |
| | Wall Thickness mm |
| 0.508 | 0.71 | 0.89 | 1.24 | 1.65 | 2.11 | 2.77 | 3.40 |
| mm | inch | | Weight kg/m |
| 6.35 | 1/4 | 0.081 | 0.109 | 0.133 | 0.174 | 0.212 | | | |
| 9.53 | 3/8 | 0.126 | 0.157 | 0.193 | 0.257 | 0.356 | 0.429 | | |
| 12.7 | 1/2 | | 0.214 | 0.263 | 0.356 | 0.457 | 0.612 | 0.754 | |
| 15.88 | 5/8 | | 0.271 | 0.334 | 0.455 | 0.588 | 0.796 | 0.995 | |
| 19.05 | 3/4 | | 0.327 | 0.405 | 0.553 | 0.729 | 0.895 | 1.236 | |
| 25.4 | 1 | | 0.44 | 0.546 | 0.75 | 0.981 | 1.234 | 1.574 | 2.05 |
| 31.75 | 1 1/4 | | 0.554 | 0.688 | 0.947 | 1.244 | 1.574 | 2.014 | 2.641 |
| 38.1 | 1 1/2 | | 0.667 | 0.832 | 1.144 | 1.514 | 1.904 | 2.454 | 3.233 |
| 44.5 | 1 3/4 | | | | 1.342 | 1.774 | 2.244 | 2.894 | 3.5 |
| 50.8 | 2 | | | | 1.549 | 2.034 | 2.574 | 3.334 | 4.03 |
| 63.5 | 2 1/2 | | | | 1.949 | 2.554 | 3.244 | 4.214 | 5.13 |
| 76.2 | 3 | | | | 2.345 | 3.084 | 3.914 | 5.094 | 6.19 |
| 88.9 | 3 1/2 | | | | 2.729 | 3.609 | 4.584 | 5.974 | 7.27 |
| 101.6 | 4 | | | | | 4.134 | 5.254 | 6.854 | 8.35 |
| 114.3 | 4 1/2 | | | | | 4.654 | 5.924 | 7.734 | 9.43 |
ASTM A213 T5 Seamless Alloy-Steel Tubes Chemical Composition(%)
| Grade | Chemical Composition(%) |
| C | Mn | P | S | Si | Cr | Mo |
| A213 T5 | ≤0.15 | 0.30-0.60 | ≤0.025 | ≤0.025 | ≤0.50 | 4.00-6.00 | 0.45-0.65 |
ASTM A213 T5 Seamless Alloy-Steel Tubes Mechanical & Physical Properties | Grade | Mechanical property |
| Tensile Strength(MPa) | Yield Strength(MPa) | Elongation(%) | Hardness(HB) |
| A213 T5 | ≥415 | ≥205 | 30 | ≤163 |
Note: Mechanical property requirements do not apply to tubing smaller than 1⁄8 in. [3.2 mm] in inside diameter or thinner than 0.015 in. [0.4 mm] in thickness.
ASTM A213/ASME SA213 Size Tolerance
| Outside Diameter | OD Tolerance | WT Tolerance | Ovality Tolerance | Cut Length Tolerance |
| OD≤ 12, 7 mm | ± 0, 13 mm | ± 15 % | – | + 3, 18 mm, – 0 mm |
| 12, 7 mm < OD ≤ 38, 1 mm | ± 0, 13 mm | ± 10 % | max, 1, 65 mm | + 3, 18 mm, – 0 mm |
| 38, 1 mm < OD ≤ 88, 9 mm | ± 0, 25 mm | ± 10 % | max, 2, 41 mm | + 4, 76 mm, – 0 mm |
Applications
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Power Generation: A213 T5 seamless tubes are used in power plants for heat exchangers and boiler tubes. These tubes can withstand high temperatures and pressures, making them suitable for steam generation and heat transfer applications.
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Petrochemical Industry: In the petrochemical industry, A213 T5 seamless tubes are utilized in refineries and chemical plants. They are employed in processes such as fluid transportation, heat exchangers, and condensers.
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Oil and Gas: A213 T5 seamless tubes are employed in the oil and gas industry for transporting fluids and gases in various stages of exploration, production, and refining. They are commonly used in pipelines, offshore platforms, and refineries.
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Automotive: A213 T5 seamless tubes find use in the automotive sector for manufacturing exhaust systems due to their ability to withstand high temperatures and resist corrosion.
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Aerospace: These tubes are utilized in aerospace applications where lightweight components with high strength and corrosion resistance are required. They are commonly used in aircraft hydraulic systems, fuel lines, and structural components.
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Heat Exchangers: A213 T5 seamless tubes are employed in various heat exchanger applications, including air conditioning, refrigeration, and HVAC systems. They efficiently transfer heat between different fluids.
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