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| Brand Name: | Jinxi Pipe |
| Model Number: | Stainless steel pipe |
| MOQ: | 1 |
| Price: | 3000USD/TON |
| Payment Terms: | L/C,D/A,D/P,T/T,Western Union |
| Supply Ability: | 10000000 |
ASTM A376 TP348 Stainless Steel Tube For High-Pressure Superheater & Reheater Tubes
Specifications
ASTM A376 TP348 Stainless Steel Tube is a seamless austenitic stainless steel tube specifically designed for high-temperature service, particularly in nuclear applications. The grade is stabilized with niobium (columbium), which prevents chromium carbide precipitation during welding or high-temperature exposure, thereby ensuring exceptional resistance to intergranular corrosion.
A defining characteristic of TP348 is its strictly controlled cobalt content (typically limited to 0.20% maximum), which minimizes the formation of long-lived radioactive isotopes, such as Cobalt-60, under neutron irradiation in nuclear environments. This tube exhibits excellent high-temperature strength, oxidation resistance, and microstructural stability, making it suitable for critical components in nuclear power systems, including heat exchangers and steam generator tubes, while also being applied in superheaters and reformers in conventional power and petrochemical industries where stringent material purity and performance are required.
| American Standard | Standard Name |
| A 376 / SA 376 | Seamless Austenitic Steel Pipe for High-temperature Service |
ASTM A376 TP348 Stainless Steel Tube Chemical Composition
(Sources American Standard A376 / A376M TABLE 1 Chemical Requirements)
| Grade | UNS Designation | ASTM A376 TP348 Composition,% | ||||||||
| C | Mn | P | S | Si | Ni | Cr | Ta | Co | ||
| TP348 | S34800 | 0.08 | 2 | 0.045 | 0.03 | 0.75 | 9.0-13.0 | 17.0-19.0 | 0.1 | 0.2 max |
ASTM A376 TP348 Stainless Steel Tube Mechanical Properties
(Sources American Standard A376 / A376M TABLE 2 Tensile Requirements)
| Grade | UNS Designation | Tensile A Strength | Yield Strength | Elongation %, Min |
| Ksi (MPa), Min. | Ksi (MPa), Min. | |||
| TP348 | S34800 | 75(515) | 30(205) | 35 |
| A+ For grade TP304, NPS8 or larger, and in schedules 140 and heavier, therequired minimum tensile strength shall be 70 ksi [480 MPa]. | ||||
ASTM A376 TP348 Stainless Steel Tube Application