Alloy Steel ASTM A213 Superheater Hot Finished Seamless Tube Long
Lifespan
1. Standards:
ASTM A213 Standard Specification for Seamless Ferritic and
Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger
Tubes
2. Application:
Power plant; Boilers; Heat-Exchangers; Chemical Fertilizer;
Petrochemicals; Offshore Oils; Gas Productions; Refineries and etc.
3. Ordering Information
Quantity (feet, meters, or number of lengths),
Name of material (seamless tubes),
Grade (T2, T5, T9, T11, T12, T22, T91, and T92),
Condition (hot finished or cold finished),
Size (outside diameter and minimum wall thickness),
Length (specific or random),
Hydrostatic Test or Nondestructive Electric Test
Increased Sulfur, and
Special requirements and any supplementary requirements selected.
4. Chemical Requirements
| Chemical Requirements |
| Grade | UNS Designation | Composition, % |
| C | Mn | p | S | Si | Cr | Mo | Other Elements |
| max | max |
| T2 | K11547 | 0.10-0.20 | 0.30-0.61 | 0.025 | 0.025 | 0.10-0.30 | 0.50-0.81 | 0.44-0.65 | |
| T5 | K41545 | 0.15 max | 0.30-0.60 | 0.025 | 0.025 | 0.50 max | 4.00-6.00 | 0.45-0.65 | |
| T9 | K90941 | 0.15 max | 0.30-0.60 | 0.025 | 0.025 | 0.25-1.00 | 8.00-10.00 | 0.90-1.10 | |
| T11 | K11597 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 | |
| T12 | K11562 | 0.05-0.15 | 0.30-0.61 | 0.025 | 0.025 | 0.50 max | 0.80-1.25 | 0.44-0.65 | |
| T22 | K21590 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50-1.00 | 1.9-2.6 | 0.87-1.13 | |
| T91 | K90901 | 0.07-0.14 | 0.30-0.60 | 0.02 | 0.01 | 0.20-0.50 | 8.0-9.5 | 0.85-1.05 | V 0.18-0.25 |
| N 0.030-0.070 |
| Ni 0.40 max |
| Al 0.04max |
| Nb 0.06-0.1 |
| T92 | K92460 | 0.07-0.13 | 0.30-0.60 | 0.02 | 0.01 | 0.50 max | 8.5-9.5 | 0.30-0.60 | Ni 0.40 max |
| V 0.15-0.25 |
| B 0.001-0.006 |
| Nb 0.04-0.09 |
| N 0.030-0.070 |
| Al 0.04max |
| W 1.50-2.00 |
5. Available Size Range
| OD | Thickness |
| mm | inch | mm | SCH |
| 88.9~141.3 | 3''~ 5'' | 2.11~19.05 | SCH10~XXS |
| *If the steel grades and size you are looking for are not listed
above, please contact us for further information. |
6. Heat Treatment Requirements
| Heat Treatment Requirements |
| Grade | UNS Number | Heat Treat Type | Austenitizing/Solutioning Temperature min or range | Cooling Media | Subcritical Annealing or Tempering Temperature
min or range °F 【°C】 |
| T2 | K11547 | full or isothermal anneal normalize and temper subcritical anneal | … | … | 1200 to 1350°F
【650 to 730°C】 |
| T5 | K41545 | full or isothermal anneal normalize and temper | … | … | 1250°F【675°C】 |
| T9 | S50400 | full or isothermal anneal normalize and temper | … | . | 1250°F【675°C】 |
| T11 | K11597 | full or isothermal anneal normalize and temper | … | … | 1200°F【650°C】 |
| T12 | K11562 | full or isothermal anneal normalize and temper subcritical anneal | … | … | 1200 to 1350 °F
【650 to 730°C】 |
| T22 | K21590 | full or isothermal anneal normalize and temper | … | … | 1250°F【675°C】 |
| T91 | K90901 | normalize and temper | 1900°F【1040°C】 | … | 1350°F【730°C】 |
| T92 | K92460 | normalize and temper | 1900°F【1040°C】 | … | 1350°F【730°C】 |
