ASTM A312 TP321H is a standard specification for seamless, straight-seam welded, and cold-worked welded austenitic stainless-steel pipes for high-temperature and general corrosive service. TP321H is a high carbon version of TP321 and is used in high-temperature applications as it is strengthened through the addition of titanium. Usually, the ASTM A312 321H seamless pipes are used in chemical processing plants, oil refineries, food processing equipment, and in power generation facilities.
ASTM A312 TP321H Seamless Pipes
ASTM A312 TP321H Erw / Welded Pipes
Mechanical Specification of AISI 321H Pipe
| Density |
8.0 g/cm3 |
| Melting Point |
1454 °C (2650 °F) |
| Tensile Strength |
Psi – 75000 , MPa – 515 |
| Yield Strength (0.2%Offset) |
Psi – 30000 , MPa – 205 |
| Elongation |
35 % |
TP321H Stainless Steel Composition Chart
| Ni |
9 – 12 |
| Cr |
17 – 19 |
| C |
0.04-0.1 |
| N |
0.10 max |
| Fe |
Balance |
| Mn |
2 max |
| Si |
0.75 max |
| S |
0.03 max |
| P |
0.045 max |
| Ti |
5xC min
0.60% max |
ASTM A312 TP321H Equivalent material grade
| MATERIAL |
UNS |
WERKSTOFF NR. |
| |
USA |
GERMAN |
| TP321H |
S32109 |
1.4878 |
