ASME SA249/ ASTM A249 TP304 Specifications
| ASTM A249 Standard | ASTM A249/ASME SA249 |
| Tube Type | Welded Tube |
| Finishes | Annealing Pickling, Bright Annealing |
| Outside Diameter | 6 Up To 304.8 Mm |
| Thickness | 0.5 Up To 6 Mm |
| Application | Heat Exchanger System |
Grades of Specification ASTM A249/SA 249
| Grade | Specification |
| Stainless 304/304L, 304/304H | ASTM A249/SA249 |
| Stainless 309S | ASTM A249/SA249 |
| Stainless 310S | ASTM A249/SA249 |
| Stainless 316/316L, 316/316H | ASTM A249/SA249 |
| Stainless 317/317L | ASTM A249/SA249 |
| Stainless 321/321H | ASTM A249/SA249 |
| Stainless 347/347H | ASTM A249/SA249 |
ASME SA249/ ASTM A 249 Tubing Chemical Composition
| Grade | UNS | Composition, % |
| Design | C | Mn | P | S | Si | Cr | Ni | Mb | Ti | Nb | N | Cu | Ce | B | Al |
| TP304 | S30400 | 0.08 | 2 | 0.045 | 0.03 | 1 | 18.0–20 | 8.0–11 | . . . | . . . | . . . | . . . | . . . | . . . |
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| TP304L | S30403 | 0.035 | 2 | 0.045 | 0.03 | 1 | 18.0–20 | 8.0–13 | . . . | . . . | . . . | . . . | . . . | . . . |
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| TP304H | S30409 | 0.04 – 0.1 | 2 | 0.045 | 0.03 | 1 | 18.0–20 | 8.0–11 | . . . | . . . | . . . | . . . | . . . | . . . |
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| TP310S | S31008 | 0.08 | 2 | 0.045 | 0.03 | 1 | 24.0- 26 | 19.0- 22 | 0.8 | . . . | . . . | . . . | . . . | . . . |
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| TP310H | S31009 | 0.04 – 0.1 | 2 | 0.045 | 0.03 | 1 | 24.0–26 | 19.0–22 | . . . | . . . | . . . | . . . |
| . . . |
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| TP310H | S31035 | 0.04 – 0.1 | 0.6 | 0.025 | 0.015 | 0.4 | 21.5–23.5 | 23.5–26.5 | . . . | . . . | 0.40- 0.6 | 0.20- 0.3 | 2.5- 3.5 | . . . | 0.002- 0.008 |
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| TP316 | S31600 | 0.08 | 2 | 0.045 | 0.03 | 1 | 16.0–18 | 10.0–14 | 2.00–3 | . . . | . . . | . . . | . . . | . . . |
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| TP316L | S31603 | 0.035 | 2 | 0.045 | 0.03 | 1 | 16.0–18 | 10.0–14 | 2.00–3 | . . . | . . . | . . . | . . . | . . . |
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| TP316H | S31609 | 0.04 – 0.1 | 2 | 0.045 | 0.03 | 1 | 16.0–18 | 10.0–14 | 2.00–3 | . . . | . . . | . . . | . . . | . . . |
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| TP317 | S31700 | 0.08 | 2 | 0.045 | 0.03 | 1 | 18.0–20 | 11.0–15 | 3.0–4 | . . . | . . . | . . . | . . . | . . . |
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| TP317L | S31703 | 0.035 | 2 | 0.045 | 0.03 | 1 | 18.0–20 | 11.0–15 | 3.0–4 | . . . | . . . | . . . | . . . | . . . |
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| TP321 | S32100 | 0.08 | 2 | 0.045 | 0.03 | 1 | 17.0–19 | 9.0–12 | . . . | Ti 5 × (C+N) min, 0.70 max | . . . | 0.1 | . . . | . . . |
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| TP321H | S32109 | 0.04 – 0.1 | 2 | 0.045 | 0.03 | 1 | 17.0–19 | 9.0–12 | . . . | 4(C+N) min; 0.70 max | . . . | 0.1 | . . . | . . . |
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| TP321H | S32654 | 0.02 | 2.0-4 | 0.03 | 0.005 | 0.5 | 24.0–25 | 21.0–23 | 7.0-8 | . . . | . . . | 0.45- 0.55 | 0.30-0.6 | . . . |
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| TP321H | S33228 | 0.04 – 0.08 | 1 | 0.02 | 0.015 | 0.3 | 26.0–28 | 31.0–33 | . . . | . . . | 0.60- 1 | . . . | . . . | 0.05 – 0.1 |
| 0.025 |
| TP321H | S34565 | 0.03 | 5.0-7 | 0.03 | 0.01 | 1 | 23.0–25 | 16.0–18 | 4.0-5 | . . . | 0.1 | 0.40- 0.6 | . . . | . . . |
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| TP347 | S34700 | 0.08 | 2 | 0.045 | 0.03 | 1 | 17.0–19 | 9.0–13 | . . . | . . . | See Spec | . . . | . . . | . . . |
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| TP347H | S34709 | 0.04 – 0.1 | 2 | 0.045 | 0.03 | 1 | 17.0–19 | 9.0–13 | . . . | . . . | See Spec | . . . | . . . | . . . |
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| TP348 | S34800 | 0.08 | 2 | 0.045 | 0.03 | 1 | 17.0–19 | 9.0–13 |
| . . . | . . . | . . . | . . . | . . . | . . . | Co 0.20, Ta 0.10 |
| TP348H | S34809 | 0.04-0.10 | 2 | 0.045 | 0.03 | 1 | 17.0–19.0 | 9.0–13 | . . . | . . . | . . . | . . . | . . . | . . . | . . . | Co 0.20, Ta 0.10 |
ASME SA249/ ASTM A 249 Tubing Size Tolerance
| OD | WTH | L |
| ASTM A249 | ＜25.4mm | ±0.10mm | ±10.00% | OD＜50.8mm +3.0mm -0mm |
| ≥25.4mm-38.1mm | ±0.15mm |
| ≥38.1mm-50.8mm | ±0.20mm |
| ≥50.8mm-63.5mm | ±0.25mm |
| ≥63.5mm-76.2mm | ±0.30mm | OD≥50.8mm +5.0 -0mm |
| ≥76.2mm-101.6mm | ±0.38mm |
| ≥101.6mm-190.5mm | +0.38mm -0.64mm |
| ≥190.5mm-228.6mm | +0.38mm -1.14mm |
What is ASME ASTM SA 249 stainless steel tube?
ASME ASTM SA 249 stainless steel tubes are used in a variety of applications, including boiler, superheater, heat exchanger, and condenser systems. These a249 stainless steel tubes are manufactured through a welding process and are typically made from austenitic stainless steel, although other stainless steel grades may also be used.
The astm a249 tp304 specification outlines the requirements for the manufacturing, dimensions, mechanical properties, and testing of these welded stainless steel tubes. It provides guidelines for various aspects, including tube dimensions, tolerances, chemical composition, mechanical properties, and nondestructive testing methods.
The stainless steel tubes produced under the ASME ASTM SA 249 standard are designed to withstand high temperatures, corrosion, and pressure in demanding industrial environments. ASME sa249 are known for their excellent corrosion resistance, strength, and durability, making them suitable for applications where reliability and longevity are essential.
Common stainless steel grades used in ASME ASTM SA 249 tubes include 304, 304L, 316, 316L, 317, and 321. These grades offer varying levels of corrosion resistance, mechanical properties, and heat resistance, allowing for the selection of the most appropriate grade based on the specific application requirements.
Overall, ASME ASTM SA 249 stainless steel tubes meet stringent industry standards, ensuring that they are manufactured to the specified dimensions, quality, and performance criteria. These ASTM a249 tubings play a critical role in various industrial sectors, providing efficient and reliable solutions for heat exchanger tube manufacturers and fluid transportation systems.
Astm A249 Vs A269 Stainless Steel Tube
Applications: ASTM A249 tubes are primarily intended for general corrosion-resisting and low- or high-temperature service, including heat exchangers, condenser tubes, and other applications. ASTM A269 tubes, on the other hand, are specifically designed for general service applications requiring high corrosion resistance and mechanical properties.
Manufacturing Process: ASTM A249 tubing is produced through the welding process, while a269 tubing can be either welded or seamless. Seamless stainless steel tubes are typically preferred for high-pressure or critical applications.
Dimensional Tolerances: ASTM a249 tubing has more lenient dimensional tolerances compared to ASTM A269. A269 tubes have tighter tolerances for outside diameter, wall thickness, and length, ensuring greater precision and consistency.
Surface Finish: ASTM A269 specifies stricter requirements for the surface finish of tubes, particularly for applications where cleanliness and smoothness are important, such as in the pharmaceutical and food processing industries.
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