ASTM A249 TP304 Stainless Steel Welded Tube Bright Annealed Welding Heat Exchanger Tube
ASTM A249 TP304 Stainless Steel Welded Tube Bright Annealed Tube Heat Exchanger Tubing
ASTM A249 TP304 stainless steel welded tube is a welded austenitic stainless steel tube made according to ASTM A249/A249M, using TP304 stainless steel. It is produced by roll-forming stainless steel strip into a tubular shape and welding the longitudinal seam. The tube is normally annealed, pickled/passivated, sized, straightened, and tested. It is designed mainly for use in heat exchangers, condensers, boilers, and superheaters, where good corrosion resistance, heat transfer, and high-temperature service are required.
Chemical Composition % of ASTM A249 TP304 Stainless Steel Welded Tube SS Welding Heat Exchanger Tube
| SS GRADE | ASTM A249/SA 249 CHEMICAL COMPOSITION % MAXIMUM | ||||||
|---|---|---|---|---|---|---|---|
| C | MN | P | S | SI | CR | NI | |
| TP304 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-11.0 |
Mechanical Properties of ASTM A249 TP304 Stainless Steel Welded Tube SS Welding Heat Exchanger Tube
| Material | Temperature | Elongation | Tensile Strength | Heat | Yield Strength |
| Min.º F(º C) | Ksi (MPa), Min. | Treatment | Ksi (MPa), Min. | ||
| TP304 | 1900 (1040) | 35 | 75(515) | Solution | 30(205) |
For heat exchanger tubes specifically
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ASTM A213 TP304 seamless — used when high integrity, high pressure/temperature, or critical service is required.
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ASTM A249 TP304 welded — common for heat exchangers, condensers, and boilers; welded but fully annealed and eddy-current tested.
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ASTM A269 TP304 welded — general-service tubing. It can be used in low-pressure/non-critical heat transfer, but it is not the dedicated heat exchanger standard. For ASME/code heat exchangers, A249 or A213 is usually preferred.
Application
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Shell & Tube Heat Exchangers (condensers, evaporators, chillers)
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U-tube bundles (BA finish allows bending without cracking)
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Hydraulic & Instrumentation lines in corrosive environments
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Biotech (clean steam, WFI systems)
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Chemical processing (acetic acid, chlorides, sulfites)
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Boiler
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