Alloy Steel Heat Exchanger Steel Pipe T91 Material Fixed / Random Length
Supplying T91 Boiler Pipe & Seamless hot finished tubes and pipes for utility boilers, industrial boilers and heat recovery steam generators. The T91 tubes and pipes are supplied in random lengths or in fixed lengths to be analyzed and agreed at time of order, in the range between 4,000 mm and 12,000 mm depending on the size.
1. Standard:
ASTM A213 Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
2. 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.
3. 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 |
4. Mechanical Properties
| Mechanical Properties |
| Grade | T2 | T5 | T9 | T11 | T12 | T22 | T91 |
| Tensile strength, min: | |
| ksi | 60 | 60 | 60 | 60 | 60 | 60 | 85 |
| Mpa | 415 | 415 | 415 | 415 | 415 | 415 | 585 |
| Yield strength, min: | |
| ksi | 30 | 30 | 30 | 30 | 30 | 30 | 60 |
| MPa | 205 | 205 | 205 | 205 | 220 | 205 | 415 |
5. Package
Packed in steel bundle, seaworthy packing or as per customer’s requirement.
6. Available Size Range
| OD | Thickness |
| mm | inch | mm | SCH |
| 21.3~60.3 | 1/2''~ 2'' | 2.11~11.07 | SCH10~XXS |
| *If the steel grades and size you are looking for are not listed above, please contact us for further information. |
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