SA213 T9 seamless alloy steel pipe is a high-temperature seamless alloy steel pipe produced in accordance with ASME standards.
This kind of steel pipe is mainly used for high-temperature pressure-bearing components such as boilers, superheaters, reheaters, economizers, headers, and steam pipes. SA213 T9 seamless alloy steel pipe has good high temperature performance, corrosion resistance and high strength. It can maintain stable mechanical properties and oxidation resistance at high temperatures and is suitable for high temperature and high pressure working environments.
Chemical Composition:
| Chemical Components (%) | ||||||||||||
| Grade | C | Mn | P | S | Si | Cr | Mo | V | Nb | N | Al | others |
| T9 | 0.15 | 0.30-0.60 | ≤0.025 | ≤0.025 | 0.25-1.0 | 8.0-10.0 | 0.90-1.10 | |||||
Heat Treatment Requirements:
| Grade | UNS Number | Heat Treat Type | Austenitizing / Solutioning Temperature, min or range ºF (ºC) | Subcritical Annealing or Tempering Temperature, Min or range ºF (ºC) |
| T9 | K50400 | full or isothermal anneal normalize and temper | … | 1250 (675) |
Tensile Requirements and Hardness:
| Mechanical properties | ||||
| Grade | Tensile | Yield | Elongation | Hardness |
| Strength (Mpa) | Strength (Mpa) | (%) | ||
| T9 | ≥415 | ≥205 | ≥30 | ≤89HRB |
