ASTM A213 TP304 Stainless Steel Seamless Industrial Heat Exchanger U-Tube
ASTM A213 TP304 Stainless Steel Seamless Industrial Heat Exchanger U-Tube
ASTM A213 TP304 U-tubes are made from common austenitic stainless steel (18/8 chromium-nickel alloy) and are widely used in industrial heat exchangers due to their excellent corrosion resistance and heat resistance. These U-tubes are seamless, meaning there are no welds during manufacturing, ensuring their integrity under high pressure. Key characteristics to understand include: composition, high-temperature performance, mechanical properties, and the U-shape specifically designed for heat exchanger applications.
What is SA 213 TP 304 material?
SA 213 TP 304 material contains 18% chromium, as well as carbon, manganese, phosphorus, sulfur, silicon, and nickel. Additionally, trace amounts of molybdenum, nitrogen, niobium, and titanium are added. SA 213 TP 304 has a lower density than ordinary 304 stainless steel.
ASTM A213 TP304 Stainless Steel Seamless U-Tubes for Industrial Heat Exchangers
Gnee Steel is a metal manufacturer with over 18 years of experience, exporting to more than 80 countries. They specialize in providing high-quality stainless steel tubing for industrial heat exchangers. Their ASTM A213 TP304 seamless U-tubes contain 18-20% chromium and 8-10.5% nickel, making them resistant to acid and chlorinated water corrosion. Their low-carbon design (≤0.08%C) effectively prevents intergranular corrosion.
Gnee Steel's tubing undergoes precision bending and annealing to meet stringent quality standards, ensuring reliable operation in industries such as chemical, petrochemical, and power generation.
ASTM A213 TP304 Tube Chemical Composition
| Grade | UNS Designation | Carbon | Manganese | Phosphorus | Sulfur | Silicon | Chromium | Nickel |
| TP304 | S30400 | 0.08 | 2 | 0.045 | 0.03 | 1 | 18.0 - 20.0 | 8.0 - 11.0 |
Heat Treatment and Grain Size Requirements
| Grade | UNS Number | Heat Treat Type | Austenitizing/Solutionizing/Stabilizing Temperature | Cooling Media |
| TP304 | S30400 | solution treatment | 1900 [1040]°F | water or other rapid cool |
ASTM A213 TP304 Tube Equivalent specification
| Region/Organization | Specification System | Grade Designation |
| China | GB | 06Cr19Ni9 |
| Japan | JIS | SUS 304 |
| South Korea | KS | STS 304 |
| USA | ASTM | 304 |
| ISO | ISO Designation | X5CrNi 18 - 10 |
| Germany | DIN EN/DIN | X5CrNi 18 - 10 (X5CrNi 18 - 9) |
| France | NF EN/NF | Z6CN 18 - 09 |
| Russia | GOST | 08X18H10 |
Tensile and Hardness Requirements
| Grade | UNS | Tensile Strength | Yield Strength | Elongation | Hardness | |
| TP304 | S30400 | min, ksi[MPa] | min, ksi[MPa] | in 2 in. or 50 mm, min, % | Brinell/Vickers | Rockwell |
| 75[515] | 30[205] | 35 | 192 HBW | 90 HRB | ||
| 200 HV | ||||||
Manufacturing Process and Specifications
Manufacturing Process: Seamless processes are employed, including cold rolling, cold drawing, heat treatment, and pickling, to ensure the production of high-quality, high-pressure steel tubing.
Standards: Complies with ASTM A213, which covers seamless ferritic and austenitic steel tubing used in boilers, superheaters, and heat exchangers.
Dimensions: A variety of outer diameter specifications are available, ranging from 1/8 inch to 5 inches, and wall thicknesses from 0.015 inches to 0.500 inches.
Applications and Design
U-tube Design: U-tubes are specifically designed for heat exchangers to facilitate the flow of fluids or gases.
Main Applications: Widely used in heat exchangers, boilers, and superheaters.
Advantages: Seamless tubes are suitable for applications requiring high dimensional accuracy and surface finish, and are also commonly used in high-pressure applications.
Advantages of U-tube design in heat exchangers:
Self-compensating bend: Eliminates the need for expansion joints, reducing the risk of leakage in high-temperature, high-pressure heat exchangers.
Space optimization: Compactly installed within the heat exchanger shell, ideal for installations with limited space.
Gnee Steel specializes in the production of a wide range of stainless steel products. Gnee Steel's product packaging includes: Steel Strapping: Pipes with an outer diameter of 3 inches or less are typically strapped together with polypropylene film to prevent rust during ocean shipping, and then secured with steel strapping. Wooden Cases/Crates: Pipes are typically packaged in wooden cases or crates to protect the pipes during transportation, especially those that are longer or have larger diameters. Seaworthy Export Packaging: Suppliers typically use standard seaworthy export packaging methods, which may include a variety of materials and techniques to protect the pipes during transportation. Tarpaulin Packaging: This prevents rain, seawater, and other external factors from penetrating the export crates during transportation. Gnee Steel specializes in the production and sale of alloy materials. Gnee Steel's products are widely used in the aerospace, chemical, power, automotive, and nuclear energy sectors, and we can provide customized alloy material solutions based on customer needs. For alloy material pricing or customized alloy material solutions, please contact us for a quote: ru@gneesteelgroup.com
