Why Buyers Pick Ganpat Industrial For Alloy Steel T91 Tube?
UNS K90901 Grade
Chemistry and strength checked against ASTM A213 limits.
Built For Heat
Creep-resistant 9Cr-1Mo-V-Nb steel for hot boiler duty.
6 To 273 mm OD
Seamless T91 in a wide outside diameter range.
ISO & PED Backed
ISO 9001 • ISO 14001 • OHSAS 18001 • PED • Petrofac Approved
Quote In 24 Hours
Fast RFQ replies with MTC 3.1 on every heat.
Alloy Steel T91 Tube Highlights
- 1Form: Seamless, hot finished or cold finished
- 2Size Range: OD 6–273 mm
- 3Grade: T91, UNS K90901, 9Cr-1Mo-V-Nb
- 4Standards: ASTM A213, ASME SA213, EN 10216-2
- 5Condition: Normalized & Tempered
- 6Papers: MTC 3.1, heat treatment record, TPI on
nomination
Ganpat Industrial Corporation has served buyers from Mumbai since 1997. Our T91 Alloy Steel Seamless Tubes suit power plants and refineries. We supply Alloy Steel T91 High Pressure Tube for critical boiler lines. Our range includes Alloy Steel UNS K90901 Seamless Tube for high-temp service. Each ASTM A213 T91 Alloy Steel High Pressure Tube meets strict mill standards. Every Alloy Steel Grade T91 Tubes batch carries full chemical certification. We stock general ASTM A213 Alloy Steel Tubing for varied plant needs. Our Alloy Gr. T91 Tubing ships with mill test certificates. Alloy Steel T91 Decorative Tube suits architectural and railing projects. Each Alloy Steel A213 T91 Tube ships with heat-wise traceability.
Mumbai · UNS K90901 Alloy Steel T91 Tube
Creep-resistant T91 tubing for boilers that run hot and hard.
Ganpat Industrial supplies Alloy Steel T91 Tube for boilers, superheaters and heat
exchangers.
- ✓Heat-Wise Traceability
- ✓ISO 9001:2015
- ✓PED Certified
- ✓Global Export Supply
High-Temperature Strength ASTM A213 T91 Seamless Tubes Manufacturer in India with MTC
Alloy Steel T91 Tube Specification
Every enquiry gets a full specification check before quotation.
Alloy Steel A213 T91 Tube Material
- UNS K90901, grade T91
- ASTM A213 / ASME SA213
- 9Cr-1Mo-V-Nb creep-strength steel
T91 Tube Sizes
- OD: 6 – 273 mm
- Usual min wall: 0.4 – 12.7 mm
- Cut to length on drawing
Making Process
- Seamless only
- Hot finished or cold finished
- Normalized & tempered
Tube Testing
- Hydrostatic or electric test
- Tension & hardness test
- Flattening & flaring test
Tube Documents
- MTC EN 10204 3.1
- Heat treatment record
- Certificate of Origin
Alloy Steel T91 High Pressure Tube Duty
- Boiler & superheater service
- Reheater & HRSG service
- Heat exchanger service
ASTM A213 Alloy Steel Tubing Size Chart
Share OD, wall and quantity. We confirm availability fast.
| OD mm | OD Inch | Supply Status |
|---|---|---|
| 6.00 | 0.236 | Usual ASTM A213 size range |
| 6.35 | 1/4″ | Usual ASTM A213 size range |
| 9.53 | 3/8″ | Usual ASTM A213 size range |
| 12.70 | 1/2″ | Usual ASTM A213 size range |
| 19.05 | 3/4″ | Usual ASTM A213 size range |
| 25.40 | 1″ | Usual ASTM A213 size range |
| 31.75 | 1-1/4″ | Usual ASTM A213 size range |
| 38.10 | 1-1/2″ | Usual ASTM A213 size range |
| 50.80 | 2″ | Usual ASTM A213 size range |
| 63.50 | 2-1/2″ | Usual ASTM A213 size range |
| 76.20 | 3″ | Usual ASTM A213 size range |
| 88.90 | 3-1/2″ | Usual ASTM A213 size range |
| 101.60 | 4″ | Usual ASTM A213 size range |
| 114.30 | 4-1/2″ | Usual ASTM A213 size range |
| 127.00 | 5″ | Usual ASTM A213 size range |
| 127.00 – 273.00 | 5 – 10.75″ | Other dimensions, made on request |
Buy Chrome Moly T91 Boiler & Superheater Tubes in 6mm to 273mm OD with Normalized & Tempered Condition
for Power Plant Applications
Where T91 Alloy Steel Seamless Tubes Are Used
Power plant buyers pick T91 for strength at high steam temperature.
Superheater Tubes
Reheater Tubes
Ultra-Supercritical Boilers
HRSG Units
Refinery Fired Heaters
T91 Alloy Steel Heat Exchanger Tube
Chemical Process Plants
High-Pressure Steam Circuits
Weekly Delivery of Hastelloy C276 Tube in below countries
| Export to | Continent | Shipping time |
|---|---|---|
Kenya |
Africa | 19 Days |
Oman |
Asia | 5 Days |
USA |
North America | 40-60 Days |
UAE |
Asia | 5 Days |
Need Alloy Steel T91 Tubing For A Boiler Job?Send OD, wall and quantity. Get factory price with MTC
3.1.
Alloy Steel UNS K90901 Seamless Tube Chemistry
Cr-Mo steel with vanadium, niobium and nitrogen for creep strength.
ChromiumCr
8.00 – 9.50%
MolybdenumMo
0.85 – 1.05%
CarbonC
0.07 – 0.14%
ManganeseMn
0.30 – 0.60%
SiliconSi
0.20 – 0.50%
VanadiumV
0.18 – 0.25%
NiobiumNb
0.06 – 0.10%
NitrogenN
0.030 – 0.070%
Nickel MaxNi
0.40% Max
Phosphorus MaxP
0.020% Max
Sulphur MaxS
0.010% Max
IronFe
Balance
Alloy Steel Grade T91 Tubes: Mechanical Strength
Minimum values for grade T91 in ASTM A213.
Tensile Strength
585 MPa Min
85 ksi
Yield Strength
415 MPa Min
60 ksi
Elongation In 50 mm
20% Min
ASTM A213
Hardness Max
250 HBW
265 HV / 25 HRC
Normalized & Tempered: T91 Heat Treatment
Heat treatment gives T91 its strength at boiler temperature.
Normalizing
1040°C Min
Austenitizing step before cooling
Tempering
730°C Min
Builds the tempered martensite
Steel Class
CSEF
Creep strength enhanced ferritic
Supply Condition
N & T
Normalized and tempered
T91 Tube Equivalent Grades & Standards
Use AS T91 Chrome Moly Tubing names to match your drawing.
American Standard
- UNS K90901, grade T91
- ASTM A213 / ASME SA213
- A335 P91 for pipe, A387 Gr 91 for plate
European Standard
- EN 10216-2
- X10CrMoVNb9-1
- Material number 1.4903
Monthly Delivery of Hastelloy C276 Tube in below countries
| Export to | Continent | Shipping time |
|---|---|---|
Singapore |
Asia | 8 Days |
Mexico |
North America | 45 Days |
South Africa |
Africa | 25-30 Days |
Kenya |
Africa | 19 Days |
Types of Alloy Steel T91 Tube
Pick the form that matches your boiler or exchanger design.
Alloy Steel T91 Seamless Tubing
ASTM A213
Hot Finished T91 Tube
Seamless
Cold Finished T91 Tube
Cold Drawn
Alloy Steel T91 Cold Rolled Coiled Tube
On Enquiry
T91 Alloy Steel Heat Exchanger Tube
Exchanger Duty
T91 Superheater & Reheater Tube
Boiler Duty
T91 U-Tube
On Drawing
AS T91 Chrome Moly Tubing
9Cr-1Mo-V-Nb
T91 vs T92 vs T22 Tube Strength
Minimum values per ASTM A213. Higher strength allows thinner walls.
T91 Tube
- Tensile 585 MPa min
- Yield 415 MPa min
- Elongation 20% min
T92 Tube
- Tensile 620 MPa min
- Yield 440 MPa min
- Elongation 20% min
T22 Tube
- Tensile 415 MPa min
- Yield 205 MPa min
- Elongation 30% min
Comparing T91 With Another Boiler Grade?Tell us your design temperature. We suggest the right
grade.
Finish Options for ASTM A213 T91 Alloy Steel High Pressure Tube
Standard supply is normalized and tempered. Special finishes are reviewed per drawing.
Normalized & Tempered (Standard)
Cold Finished, Cold Drawn
Alloy Steel T91 BRIGHT ANNEALED Tube: On Enquiry
Alloy Steel T91 Electropolish Tube: On Enquiry
Alloy Steel T91 Decorative Tube: On Enquiry
Coiled Supply: On Enquiry
End Preparation for T91 Tube
Plain End (PE)
Bevelled End (BE) For Welding
Cut Lengths On Drawing
U-Bend Forming On Drawing
Testing Methods for Alloy Steel T91 Seamless Tubing
Test lots follow ASTM A213 rules. Third-party witness on nomination.
Hydrostatic Or Electric Test
Each tube is pressure or electrically tested per ASTM A213.
Tension Test
Confirms 585 MPa tensile and 415 MPa yield minimums.
Hardness Test
Checks the 250 HBW maximum for grade T91.
Flattening Test
Shows ductility and freedom from cracks.
Flaring Test
Checks the tube end opens without splitting.
PMI Check
Alloy identity verified before dispatch.
Documents With Every Alloy Steel A213 T91 Tube
Mill Test Certificate
EN 10204 3.1 with chemistry and mechanical results
Every Heat
Heat Treatment Record
Normalizing and tempering details for your file
N & T
PMI Report
Alloy identity check report
On Request
Third-Party Inspection
Witness by your nominated inspector
TPI
Certificate Of Origin
Export paperwork for customs
Export
Alloy Gr. T91 Tubing Price Factors
Price moves with size, process and alloy market rates.
Get A Firm T91 Tube Price TodayShare size list and quantity. Our desk replies within 24
hours.
T91 Tube FAQs
What is T91 material?
T91 is a 9Cr-1Mo steel with vanadium, niobium and nitrogen. It resists creep at high boiler temperatures.
What is UNS K90901 for Alloy Steel T91 Seamless Tubing?
UNS K90901 is the unified number for grade T91.
Which Alloy Gr. T91 Tubing OD range do you supply?
We supply from 6 mm to 273 mm OD. Sizes above 127 mm OD are other dimensions.
What strength does ASTM A213 T91 tube offer?
Minimum tensile is 585 MPa. Minimum yield is 415 MPa. Elongation is 20% minimum.
How do I get an Alloy Steel T91 Tube quote?
Send OD, wall and quantity on WhatsApp or email. We reply within 24 hours.
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6 Reasons to choose Ganpat Industrial Corporation
- Distributor of Heat Exchanger parts and Alloys for High Temperature applications.
- Stockholder and importer of Ferrous and non ferrous metals.
- Wide stock of prime quality austenitic and Ferritic Stainless Steel for Extreme pressure environment.
- Marine grade steel at lowest price in Mumbai.
- Compare Price per KG in India and China.
- Offer Resale price to local suppliers, traders and wholesalers in UAE, Saudi Arabia, Egypt, and USA