ASTM A249 Welded Stainless Steel Boiler, Heat-Exchanger Tubes
- Grade: TP304/304L, TP309S, TP310S, TP316/316L, TP317/317L, TP321/321H, TP347/347H, TP348/348H
- Tube OD: 4-321mm
- Tube WT: 0.4-8.1mm
- Length: 1000-12000mm
- Type: Welded
ASTM A249 Welded Stainless Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes
Golden Sunbird Metals supplies high-quality ASTM A249 welded stainless steel boiler and heat exchanger tubes for demanding thermal and pressure-service applications. Manufactured for excellent dimensional accuracy, strong weld integrity, and reliable corrosion resistance, ASTM A249 tubes are widely used in boilers, condensers, heat exchangers, economizers, and other critical equipment across power generation, petrochemical, chemical processing, and industrial heating systems. These welded stainless steel tubes are valued for their smooth surface finish, stable performance, and efficient heat transfer, helping improve system reliability and service life. At Golden Sunbird Metals, we offer ASTM A249 stainless steel boiler and heat exchanger tubes in a variety of grades, sizes, and wall thicknesses to meet diverse project requirements and technical specifications. Whether your application requires high-temperature resistance, dependable fabrication properties, or long-term durability in corrosive environments, our stainless steel tubing solutions are designed to deliver consistent quality and performance.
ASTM A249 Welded Stainless Steel Boiler, Heat-Exchanger Tubes Chemical Composition (wt.%)
| Grade | UNS | C (%) | Mn (%) | P (%) | S(%) | Si (%) | Cr (%) | Ni (%) | Mo (%) | N (%) | Others |
| TP304 | S30400 | 0.08 | 2.00 | 0.045 | 0.03 | 1.00 | 18.0-20.0 | 8.0-11.0 | – | – | – |
| TP304L | S30403 | 0.03 | 2.00 | 0.045 | 0.03 | 1.00 | 18.0-20.0 | 8.0-12.0 | – | – | – |
| TP309S | S30908 | 0.08 | 2.00 | 0.045 | 0.03 | 1.00 | 22.0-24.0 | 12.0-15.0 | – | – | – |
| TP310S | S31008 | 0.08 | 2.00 | 0.045 | 0.03 | 1.00 | 24.0-26.0 | 19.0-22.0 | – | – | – |
| TP316 | S31600 | 0.08 | 2.00 | 0.045 | 0.03 | 1.00 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 | – | – |
| TP316L | S31603 | 0.03 | 2.00 | 0.045 | 0.03 | 1.00 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 | – | – |
| TP317 | S31700 | 0.08 | 2.00 | 0.045 | 0.03 | 1.00 | 18.0-20.0 | 11.0-15.0 | 3.0-4.0 | – | – |
| TP317L | S31703 | 0.03 | 2.00 | 0.045 | 0.03 | 1.00 | 18.0-20.0 | 11.0-15.0 | 3.0-4.0 | – | – |
| TP321 | S32100 | 0.08 | 2.00 | 0.045 | 0.03 | 1.00 | 17.0-19.0 | 9.0-12.0 | – | 0.1 | Ti 5(C+N)-0.70 |
| TP321H | S32109 | 0.04-0.10 | 2.00 | 0.045 | 0.03 | 1.00 | 17.0-19.0 | 9.0-12.0 | – | 0.1 | Ti 5(C+N)-0.70 |
| TP347 | S34700 | 0.08 | 2.00 | 0.045 | 0.03 | 1.00 | 17.0-19.0 | 9.0-13.0 | – | – | Cb+Ta 10xC-1.10 |
| TP347H | S34709 | 0.04-0.10 | 2.00 | 0.045 | 0.03 | 1.00 | 17.0-19.0 | 9.0-13.0 | – | – | Cb+Ta 10xC-1.10 |
| TP348 | S34800 | 0.08 | 2.00 | 0.045 | 0.03 | 1.00 | 17.0-19.0 | 9.0-13.0 | – | – | Cb+Ta 10xC-1.10 |
| TP348H | S34809 | 0.04-0.10 | 2.00 | 0.045 | 0.03 | 1.00 | 17.0-19.0 | 9.0-13.0 | – | – | Cb+Ta 10xC-1.10 |
ASTM A249 Welded Stainless Steel Boiler, Heat-Exchanger Tubes Mechanical Properties (wt.%)
| Grade | UNS | Tensile Strength (min, MPa) |
Yield Strength (min, MPa) |
Elongation (min, %) |
| TP304 | S30400 | 515 | 205 | 35 |
| TP304L | S30403 | 485 | 170 | 35 |
| TP309S | S30908 | 515 | 205 | 35 |
| TP310S | S31008 | 515 | 205 | 35 |
| TP316 | S31600 | 515 | 205 | 35 |
| TP316L | S31603 | 485 | 170 | 35 |
| TP317 | S31700 | 515 | 205 | 35 |
| TP317L | S31703 | 485 | 170 | 35 |
| TP321 | S32100 | 515 | 205 | 35 |
| TP321H | S32109 | 515 | 205 | 35 |
| TP347 | S34700 | 515 | 205 | 35 |
| TP347H | S34709 | 515 | 205 | 35 |
| TP348 | S34800 | 515 | 205 | 35 |
| TP348H | S34809 | 515 | 205 | 35 |
Features
- ASTM A249/A249M Welded Austenitic Stainless Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes (grades TP304/304L, TP309S, TP310S, TP316/316L, TP317/317L, TP321/321H, TP347/347H, TP348/348H).
- Excellent corrosion resistance in aqueous, oxidizing, and high-temperature service environments, including resistance to pitting and intergranular corrosion (especially L and stabilized grades).
- Superior high-temperature strength and creep resistance for H-grade variants (TP321H, TP347H) in superheater and boiler applications up to 800°C+.
- High thermal conductivity combined with excellent mechanical properties for efficient heat transfer under pressure.
- Welded construction with optional heavily cold-worked processing for enhanced dimensional accuracy and surface finish.
- Low-carbon L grades (e.g., TP304L, TP316L) minimize sensitization and carbide precipitation during welding.
- Stabilized grades (Ti or Nb) provide outstanding resistance to intergranular corrosion after welding or prolonged high-temperature exposure.
- Available in a wide range of sizes with hydrostatic, pneumatic, and nondestructive testing ensuring reliability in critical service.
Technical Specifications
| Specification | Value |
| Standard | ASTM A249/A249M Welded Stainless Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes |
| Grade | TP304/304L, TP309S, TP310S, TP316/316L, TP317/317L, TP321/321H, TP347/347H, TP348/348H |
| Manufacturing Process | Welded |
| Seam Type | Welded |
| Dimension | Tube OD: 4-321mm Tube WT: 0.4-8.1mm |
| Length | 1000-12000mm |
| Delivery Condition | Heating the material and quenching in water or rapidly cooling by other means |
| Inspection Certificate | EN 10204 Type 3.1 (Mill Test Certificate), EN 10204 Type 3.2 (Witness Testing or 3rd Party Inspection) |
| Test | Chemical analysis, Tension tests, Flaring tests, Hydrostatic tests, Air underwater pressure tests, Nondestructive electric tests |
Applications
- Boilers and superheaters in power generation plants requiring high-temperature strength and creep resistance.
- Heat exchangers and condensers in chemical, petrochemical, and refinery processing units handling corrosive fluids.
- Feedwater heaters and steam condensers in conventional and nuclear power stations.
- Process piping and heat transfer equipment in food, pharmaceutical, and beverage industries where hygiene and corrosion resistance are critical.
- Oil and gas refinery furnace tubes and high-pressure heat recovery systems.
- Aerospace and marine heat exchangers demanding lightweight, high-strength, corrosion-resistant tubing.
- General industrial high-pressure, high-temperature tubing for steam, water, and chemical service after proper qualification and heat treatment.
