ASTM A213 TP304 Stainless Steel Seamless U Tube for Industrial Heat
Exchangers
Yuhong, a 30+ year - experienced metal manufacturer exporting to 85
countries, specializes in high - quality stainless steel piping for
industrial heat exchangers.Its ASTM A213 TP304 seamless U tubes,
with 18 - 20% Cr and 8 - 10.5% Ni, resist corrosion in acids and
chlorinated water. The low - carbon design (≤0.08%C) prevents
intergranular corrosion.
Precision - bent and annealed, Yuhong’s tubes meet strict quality
standards, ensuring reliable performance in chemical,
petrochemical, and power sectors.
ASTM A213 TP304 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 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 | |
U-Tube Design Advantages for Heat Exchangers
Self-Compensating Bending: Eliminates the need for expansion joints, reducing leakage risks
in high-temperature/high-pressure heat exchangers.
Space Optimization: Fits compactly within heat exchanger shells, ideal for
installations with limited space.
