ASTM A213 T9 Chrome Moly Seamless Tube (9Cr-1Mo)

ASME SA213 Grade T9 alloy steel boiler, superheater and heat-exchanger tubing


ASTM A213 T9 alloy steel seamless tubes for high-temperature heater and boiler service

Savoy Piping Inc. supplies ASTM A213 T9 / ASME SA213 Grade T9 seamless chrome moly tubes — the 9Cr-1Mo grade specified when heater and high-temperature exchanger tubes need stronger sulfidation and oxidation resistance than 5Cr material.

T9 is a deliberate chemistry choice for severe elevated-temperature process duty. Procurement usually focuses on OD/wall, heat treatment, hardness, and clean mill chemistry — not generic “alloy tube” wording. For IBR-linked boiler packages, confirm SA213 T9 documentation requirements early.

Where T9 fits: severe refinery heater tubes, high-temperature process exchangers, and furnace tubing exposed to sulfur-bearing streams. Milder duties may stay on T5. Power-plant steam tubing more often uses T11, T22 or CSEF T91.

Matching pipe grade is typically ASTM A335 P9. We supply T9 with EN 10204 3.1 / 3.2 certificates and optional third-party inspection.

ASTM A213 T9 Alloy Steel Seamless Pipe Range

A213 T9 Alloy Steel Seamless Tubes Specification ASTM A213 / ASME SA213
A213 T9 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
A213 T9 Alloy Steel Seamless Tubes Type Seamless - Hot Rolled / Cold Drawn
A213 T9 Alloy Steel Seamless Tubes Outer Diameter Size A213 - 3/8" NB to 30" NB (Nominal Bore Size)
A213 T9 Alloy Steel Seamless Tubes Wall Thickness Schedule 20 to Schedule XXS (Heavier On Request) Up to 250 mm Thickness
A213 T9 Alloy Steel Seamless Tubes Length 5 to 7 Meters, 09 to 13 Meters, Single Random Length, Double Random Length And Customize Size.
A213 T9 Alloy Steel Seamless Tubes Pipe Ends Plain Ends / Beveled Ends / Coupling
A213 T9 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
A213 T9 Alloy Steel Seamless Tubes Coating Epoxy Coating / Colour Paint Coating / 3LPE Coating.
A213 T9 Alloy Steel Seamless Tubes Other Testing Tensile Test, Transverse Tension Tests, Flattening Test, Metal Structure and Etching Tests, Photomicrographs, Hardness Tests, etc.
A213 T9 Alloy Steel Seamless Tubes Dimension All Pipes Is Manufactured and Inspected / Tested to the Relevant standards including ASTM, ASME, API.
A213 T9 Alloy Steel Seamless Tubes Value Added Services Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Galavanizing / Heat Treatment
A213 T9 Alloy Steel Seamless Tubes Packaging Loose / Bundle / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector
A213 T9 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
A213 T9 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

What is ASTM A213 T9 tube?

ASTM A213 / ASME SA213 Grade T9 is seamless ferritic alloy-steel tubing for boilers, superheaters and heat exchangers, commonly described as 9Cr-1Mo. Higher chromium versus T5 improves resistance to high-temperature oxidation and sulfidation; molybdenum supports strength at temperature.

T9 is related to pipe grade A335 P9, but ordered as tube product for heat-transfer equipment. Do not confuse classic T9 with CSEF grade T91 — both are roughly 9% Cr, yet chemistry, heat treatment and creep design intent differ.

Typical applications of ASTM A213 T9 tube

  • Severe-duty refinery heater tubes needing higher chromium for sulfidation resistance
  • High-temperature petrochemical heaters and process exchangers
  • Furnace / convection section tubing where 9Cr-1Mo is specified
  • Upgrade replacements from carbon steel or T5 after corrosion reviews
  • Matched systems with A335 P9 pipe and fittings

T9 vs T5 vs T91 — quick buyer guidance

Use T9 when process corrosion drives 9Cr-1Mo tube selection. Use T5 for many standard heater duties. Use T91 when creep-strength-enhanced modified 9Cr is required for supercritical steam tubes — not as a casual substitute for classic T9 heater tubing.

ASTM A213 T9 Alloy Steel Seamless Tubes chemical compositions

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

ASTM A213 T9 Seamless Tubes Permissible Variation in Wall Thickness

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

ASTM A213 T9 Tubes Permissible Variations in Outside Diameter

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

SUPPLEMENTARY REQUIREMENT for ASTM A213 T9 Seamless Tubes

S1. STRESS-RELIVED ANNEALED Tubes
S2. STABILIZING HEAT TREATMENT
S3. UNSTRAIGHTENED Tubes
S4. INTERNGRANULAR CORROSION TEST

Frequently asked questions — ASTM A213 T9

What is ASTM A213 T9 used for?

ASTM A213 T9 (9Cr-1Mo) seamless tubes are used in high-temperature heaters, boilers and heat exchangers where higher chromium is needed for oxidation and sulfidation resistance, especially in severe refinery heater service.

T5 or T9 — which should I choose?

T5 (5Cr-0.5Mo) covers many heater and exchanger duties. T9 (9Cr-1Mo) is selected when corrosion/sulfidation risk is higher and the design calls for more chromium. Follow the project corrosion class; do not substitute on price alone.

Is T9 the same as T91?

No. Both are roughly 9% chromium alloys, but T91 is a vanadium-niobium modified CSEF steel for high-creep steam service. Classic T9 is the traditional 9Cr-1Mo process/heater grade. Chemistry, heat treatment and welding practice differ.

Can Savoy Piping supply ASME SA213 T9 tubes?

Yes. We supply ASTM A213 / ASME SA213 T9 seamless tubes with mill test certificates and optional IBR / third-party inspection packages as specified on the purchase order.

Supplying ASTM A213 T9 Alloy Steel Seamless Tubes to Countries -

We Export ASTM A213 T9 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 ASTM A213 T9 Alloy Steel Seamless Tubes, Savoy Piping Inc. is committed to provide each and every customer with the highest standard of customer service. We deal in A213 T9 Alloy Steel Seamless Tubes in India and Overseas, offering a wide range of ASTM A213 T9 Alloy Steel Seamless Tubes