Delivering High Quality Stainless Steel and Alloy Piping Products — Pipes, Tubes, Fittings, Flanges and more for Global Industries.
sales@savoypipinginc.com
Delivering High Quality Stainless Steel and Alloy Piping Products — Pipes, Tubes, Fittings, Flanges and more for Global Industries.
sales@savoypipinginc.com
Savoy Piping Inc. supplies ASME SA213 Grade T91 / ASTM A213 T91 seamless tubes — the 9Cr-1Mo-V-Nb creep-strength-enhanced ferritic (CSEF) grade specified for modern high-pressure, high-temperature superheater and reheater service.
T91 is not “just another chrome moly tube.” Vanadium, niobium and controlled nitrogen create a tempered martensitic microstructure with strong creep resistance — which also means welding, PWHT and hardness control are non-negotiable.
What serious buyers ask for: heat chemistry within T91 limits, correct normalise-and-temper practice, hardness within specification, PMI, and complete EN 10204 documentation. For IBR-linked work, SA213 T91 with Form III-C may also be required.
Matching pipe: ASME SA335 P91. Conventional tube grades: T22, T11. ASTM twin: ASTM A213 T91.
ASME SA213 Grade T91 is the ASME companion to ASTM A213 T91 — seamless CSEF tubing for high-temperature, high-pressure boiler service. It is the tube counterpart to SA335 / A335 P91 pipe.
Incorrect welding or PWHT can leave soft or overly hard zones that hurt creep life or toughness. Projects usually require documented hardness surveys after heat treatment.
Also see: Alloy steel seamless hub · Chrome moly hub · Materials hub.
Use T91 when the approved material class requires CSEF modified 9Cr. Do not substitute classic T9 or T22 on price alone. Confirm welding/PWHT procedures before fabrication.
| SA213 T91 Alloy Steel Seamless Tubes Specification | ASTM A213 / ASME SA213 |
| SA213 T91 Alloy Steel Seamless Tubes Grades | ASTM A213 T5, ASTM A213 T9, ASTM A213 T11, ASTM A213 T22, ASTM A213 T91, ASME SA213 T5, ASME SA213 T9, ASME SA213 T11, ASME SA213 T22, ASME SA213 T91 |
| SA213 T91 Alloy Steel Seamless Tubes Type | Seamless - Hot Rolled / Cold Drawn |
| SA213 T91 Alloy Steel Seamless Tubes Outer Diameter Size | A213 - 3/8" NB to 30" NB (Nominal Bore Size) |
| SA213 T91 Alloy Steel Seamless Tubes Wall Thickness | Schedule 20 to Schedule XXS (Heavier On Request) Up to 250 mm Thickness |
| A213 T91 Alloy Steel Seamless Tubes Length | 5 to 7 Meters, 09 to 13 Meters, Single Random Length, Double Random Length And Customize Size. |
| SA213 T91 Alloy Steel Seamless Tubes Pipe Ends | Plain Ends / Beveled Ends / Coupling |
| SA213 T91 Alloy Steel Seamless Tubes Delivery Conditions | As Rolled, Cold Drawn, Normalizing Rolled, Thermomechanical Rolled / Formed, Normalizing Formed, Normalized and Tempered / Quenched and Tempered - BR / N / Q /T |
| SA213 T91 Alloy Steel Seamless Tubes Coating | Epoxy Coating / Colour Paint Coating / 3LPE Coating. |
| SA213 T91 Alloy Steel Seamless Tubes Other Testing | Tensile Test, Transverse Tension Tests, Flattening Test, Metal Structure and Etching Tests, Photomicrographs, Hardness Tests, etc. |
| SA213 T91 Alloy Steel Seamless Tubes Dimension | All Pipes Is Manufactured and Inspected / Tested to the Relevant standards including ASTM, ASME, API 5CT. |
| SA213 T91 Alloy Steel Seamless Tubes Value Added Services | Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Galavanizing / Heat Treatment |
| SA213 T91 Alloy Steel Seamless Tubes Packaging | Loose / Bundle / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector |
| SA213 T91 Alloy Steel Seamless Tubes Shipment & Transportation | By Road - Truck / Train, By Sea - Break-bulk Conventional Vessel / FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 40 Feet Container / 4 Feet Container / High Cube Container / Open Top Container, By Air - Freighter Civil Passenger and Cargo Planes |
| SA213 T91 Alloy Steel Seamless Tubes Material Test Certificate | Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS ETC |
Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
1.1 This specification covers seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes, designated Grades T91, TP304, etc. These steels are listed in Tables 1 and 2.
1.2 Grades containing the letter, H, in their designation, have requirements different from those of similar grades not containing the letter, H. These different requirements provide higher creep-rupture strength than normally achievable in similar grades without these different requirements.
1.3 The tubing sizes and thicknesses usually furnished to this specification are 1/8 in. [3.2 mm] in inside diameter to 5 in. [127 mm] in outside diameter and 0.015 to 0.500 in. [0.4 to 12.7 mm], inclusive, in minimum wall thickness or, if specified in the order, average Wall Thickness. Tubing having other diameters may be furnished, provided such Tubes comply with all other requirements of this specification.
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. The inch-pound units shall apply unless the “M” designation of this specification is specified in the order.
TABLE 1 SA213 T91 Chemical Composition Limits, %A, for Low Alloy T91 Steel A Maximum, unless range or minimum is indicanted. Where ellipses (…) appear in this table, there is no requirement, and analysis for the element need not be determined or reported.
B It is permissible to order T2 and T12 with a sulfur content of 0.04 max. See 16.3.
C Alternatively, in lieu of this ratio minimum, the SA213 T91 Material shall have a minimum hardness of 275 HV in the hardened condition, defined as after austenitizing and cooling to room temperature but prior to tempering. Hardness testing shall be performed at mid-thickness of the product. Hardness test frequency shall be two samples of product per heat treatment lot and the hardness testing results shall be reported on the material test report.
| Composition, % | |||||||||||||
| Grade | UNS Designation | Carbon | Manganese | Phosporus | Sulphur | Silicon | Nickel | Chromium | Molybdenum | Vanadium | Niobium | Aluminium | Other Elements |
| T5 | K4154 | 0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50 | … | 4.00-6.00 | 0.4-0.65 | … | |||
| 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 | … | |||
| T22 | K2159 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50 | … | 1.9-2.60 | 0.87-1.13 | … | |||
| T91 | K991 | 0.07-0.14 | 0.30-0.60 | 0.02 | 0.010 | 0.20-0.50 | 0.4 | 8.0-9.5 | 0.85-1.05 | 0.18-0.25 | 0.06-0.10 | 0.02 | Ti 0.01 ZR 0.01 |
| Hot rolled | Outside Diameter, mm | Tolerance, % |
| OD≤101.6, WT≤2.4 | +40/-0 | |
| OD≤101.6, 2.4＜WT≤3.8 | +35/-0 | |
| OD≤101.6, 3.8＜WT≤4.6 | +33/-0 | |
| OD≤101.6, WT 4.6 | +28/-0 | |
| OD 101.6, 2.4 WT≤3.8 | +35/-0 | |
| OD 101.6, 3.8＜WT≤4.6 | +33/-0 | |
| OD 101.6, WT 4.6 | +28/-0 | |
| Cold Drawn | Outside Diameter, mm | Tolerance, % |
| OD≤38.1 | +20/-0 | |
| OD 38.1 | +22/-0 |
| Hot rolled | Outside Diameter, mm | Tolerance, mm |
| OD≤101.6 | +0.4/-0.8 | |
| 101.6＜OD≤19.5 | +0.4/-1.2 | |
| 19.5＜OD≤228.6 | +0.4/-1.6 | |
| Cold Drawn | Outside Diameter, mm | Tolerance, mm |
| OD＜25.4 | ±0.10 | |
| 25.4≤OD≤38.1 | ±0.15 | |
| 38.1＜OD＜50.8 | ±0.20 | |
| 50.8≤OD＜63.5 | ±0.25 | |
| 63.5≤OD＜76.2 | ±0.30 | |
| 76.2≤OD≤101.6 | ±0.38 | |
| 101.6＜OD≤19.5 | +0.38/-0.64 | |
| 19.5＜OD≤228.6 | +0.38/-1.14 |
ASME SA213 T91 is used for high-temperature, high-pressure boiler tubing — especially superheater and reheater tubes in supercritical power plants — where creep strength of modified 9Cr-1Mo is required.
Incorrect welding or PWHT can leave soft or overly hard zones that hurt creep life or toughness. Projects usually require documented hardness surveys after heat treatment.
T22 is conventional 2.25Cr-1Mo chrome moly. T91 is a vanadium-niobium modified 9Cr CSEF steel with much higher creep strength for advanced steam temperatures. They are not interchangeable without design review.
Companion designations. ASME SA213 Grade T91 is commonly written on ASME/IBR packages; ASTM A213 T91 is the ASTM counterpart. Confirm documentation on the PO.
We Export ASME SA213 T91 Alloy Steel Tubes to Saudi Arabia, Iran, Iraq, United Arab Emirates, Qatar, Bahrain, Oman, Kuwait, Turkey, Egypt, Yemen, Syria, Israel, Jordan, Cyprus, Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan, Sri Lanka, Maldives, Bangladesh, Myanmar, Taiwan, Cambodia, Argentina, Bolivia, Brazil, Chile, Venezuela, Colombia, Ecuador, Guyana, Paraguay, Uruguay, United States of America, Canada, Mexico, Panama, Costa Rica, Puerto Rico, Trinidad And Tobago, Jamaica, Bahamas, Denmark, Russia, Norway, Germany, France, Italy, United Kingdom, Spain, Ukraine, Netherlands, Belgium, Greece, Czech Republic, Portugal, Hungary, Albania, Austria, Switzerland, Slovakia, Finland, Ireland, Croatia, Slovenia, Malta, Nigeria, Algeria, Angola, South Africa, Libya, Egypt, Sudan, Equatorial Guinea, The Republic Of Congo, Gabon, Europe, Africa, Asia, North America, South America, Middle East, Far East.etc
Savoy Piping Inc. is a well known worldwide Exporter of ASME SA213 T91 Alloy Steel Seamless Tubes is committed to provide each and every customer with the highest standard of customer service. We deal in SA213 T91 Alloy Steel Seamless Tubes in India and Overseas, offering a wide range of ASME SA213 T91 Alloy Steel Seamless Tubes