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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 TP304H Stainless Steel Tube Superheater and Reheater Tubes in Power Boilers
Specifications
ASTM A376 TP304H is a specification for seamless austenitic steel tubes designed explicitly for high-temperature and high-pressure service. The "H" designation indicates a controlled carbon content (0.04-0.10%) that provides higher strength at elevated temperatures, specifically superior creep resistance and stress rupture properties compared to the standard TP304 grade.
ASTM A376 TP304H tubing is specifically engineered for the most critical high-temperature, high-pressure steam services in power generation, where long-term creep strength and microstructural stability are paramount for safety and performance.
| American Standard | Standard Name |
| A 376 / SA 376 | Seamless Austenitic Steel Pipe for High-temperature Service |
ASTM A376 TP304H Stainless Steel Tube Chemical Composition
(Sources American Standard A376 / A376M TABLE 1 Chemical Requirements)
| Grade | UNS Designation | ASTM A376 TP304H Composition,% | ||||||
| C | Mn | P | S | Si | Ni | Cr | ||
| TP304H | S30409 | 0.04-0.10 | 2 | 0.045 | 0.03 | 0.75 | 8.0-11.0 | 18.0-20.0 |
ASTM A376 TP304H 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. | |||
| TP304H | S30409 | 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 TP304H Stainless Steel Tube Application