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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 TP321H Stainless Steel Tube For Superheater and Reheater Tubes in High-Pressure Boilers
Specifications
ASTM A376 TP321H is the high-carbon version of the titanium-stabilized TP321 grade, specified for seamless austenitic steel tubes in high-temperature service. The "H" designation ensures a controlled carbon content (0.04-0.10%) to provide enhanced high-temperature creep strength and stress rupture properties compared to standard TP321.
ASTM A376 TP321H tubing is engineered and applied specifically for high-temperature, high-pressure service where long-term creep strength and resistance to sensitization are the primary design considerations.
| American Standard | Standard Name |
| A 376 / SA 376 | Seamless Austenitic Steel Pipe for High-temperature Service |
ASTM A376 TP321H Stainless Steel Tube Chemical Composition
(Sources American Standard A376 / A376M TABLE 1 Chemical Requirements)
| Grade | UNS Designation | ASTM A376 TP321H Composition,% | ||||||
| C | Mn | P | S | Si | Ni | Cr | ||
| TP321H | S32109 | 0.04-0.10 | 2 | 0.045 | 0.03 | 0.75 | 9.0-13.0 | 17.0-19.0 |
ASTM A376 TP321H 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. | |||
| TP321H ≤3/8“ | S32109 | 75(515) | 30(205) | 35 |
| TP321H ＞3/8“ B | S32109 | 70(480) | 25(170) | 35 |
| A+ For grade TP304, NPS8 or larger, and in schedules 140 and heavier, therequired minimum tensile strength shall be 70 ksi [480 MPa]. B Prior to the issuance of A 376/A 376M-88, the tensile and yield strengthvalues were 75 [520] and 30 [210] respectively, for nominal wall greater than % in.[9.5 mm]. | ||||
ASTM A376 TP321H Stainless Steel Tube Application