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ASTM A249 TP304L / UNS S30403 Stainless Steel Welded Tube Heat Exchanger Tube
ASTM A249 tubes are typically delivered in the annealed condition. Heat treatment may be necessary after welding to restore corrosion resistance and mechanical properties. These tubes undergo various tests such as hydrostatic or nondestructive electric tests to ensure they meet the specified requirements. Certifications documenting compliance with ASTM A249 standards are often provided with the tubes.
ASTM A249 TP304L Stainless Steel Welded Tubes Equivalent Grades
| Grade | Unified Numbering System | Old British | Euronorm | Swedish SS | Japanese Industrial Standards | GOST | ||
| British Standards | European Standards | No | Name | |||||
| 304L | S30403 | 304S31 | 58E | 1.4306 / 1.4307 | X5CrNi18-10 | 2332 | SUS 304L | 03Х18Н11 |
ASTM A249 TP304L Stainless Steel Welded Tubes Chemical Composition
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 304L | min. | – | – | – | – | – | 18.0 | – | 8.0 | – |
| max. | 0.030 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 12.0 | 0.10 | ||
ASTM A249 TP304L Stainless Steel Welded Tubes Mechanical Properties
| A 249 | TENSILE STRESS (MPA) MAX | YIELD STRESS (MPA) MAX | ELONGATION(%) | HARDNESS MIN |
|---|---|---|---|---|
| TP 304L | 485 | 170 | 35 | 90 |
| 1.4307 | 480-680 | 180 | 40 | 90 |
| Specifications | ASTM A249 / SA 249 |
| Size | 1/8″NB TO 30″NB |
| Welded Size | 1/2" NB - 16" NB |
| Schedule | BWG10-25, SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160 |
| Type | ASTM A 249 TP304L SS Welded Tubes |
| Specialized in | Large Diameter Size |
| Length | Single Random, Double Random & Cut Length. |
| Form | Round, Square, Rectangular, Hydraulic Etc |
| End | Plain End, Beveled End, Treaded |
Application
Apart from heat exchangers and condensers, ASTM A249 tubes are also suitable for use in boilers, superheaters, and other high-temperature applications in industries like food processing, pharmaceuticals, and oil refining.
