What Makes Ganpat Industrial Corporation A Dependable Alloy Steel F91 Round Bar Supplier In India?
Since 1997
Three decades of forging and stocking high-temperature alloy steel in Mumbai
ISO 9001:2015 & ISO 14001:2015
Certified quality and environmental management on every heat
OHSAS 18001:2007 & PED Certified
Safety-managed forging and pressure equipment directive compliance
Petrofac Approved
Vetted for supply into major EPC and refinery vendor lists
Heat-Traceable Chemistry
Vanadium, niobium and nitrogen levels confirmed before dispatch
Alloy Steel F91 Round Bar Key points
- 1Material Basis: Modified 9Cr-1Mo-V Martensitic Alloy Steel • UNS K90901 • 1.4903
- 2Governing Standard: ASTM A182 / ASME SA182 Grade F91 Forged Bar & Rod
- 3Micro-Alloying: Vanadium 0.18-0.25% • Niobium 0.06-0.10% • Nitrogen 0.030-0.070%
- 4Equivalents: EN X10CrMoVNb9-1 • DIN/Werkstoff 1.4903 • Casting A217 Gr. C12A
- 5Minimum Strength: 620 MPa Tensile • 415 MPa Yield • 190-248 HBW
- 6Forms Supplied: Round, Flat, Hex, Threaded, Forged Block & Bright Bar Ex-Stock Mumbai
Mumbai works desk • WhatsApp +91 85912 64209 • Same-day quote on any size list
Ganpat Industrial Corporation has forged and stocked chrome-moly alloy steel bar in Mumbai since 1997. Alloy Steel F91 Round Bar is a modified 9%Chromium-1%Molybdenum grade. It features controlled Vanadium, Niobium, and Nitrogen additions. These micro-alloys raise creep rupture strength well above older 9Cr-1Mo and F22-class bar. As an Alloy Steel F91 Round Bar Manufacturer in India, we hold extensive stock. We stock ASTM A182 Grade F91 Alloy Steel Rod in round, flat, and hex sections. Every heat is normalised and tempered before it leaves our works. Each despatch carries an EN 10204 3.1 mill certificate with chemistry and mechanical data. We regularly supply this bar to power EPCs in Gujarat, Maharashtra, and Tamil Nadu. We also export to the Middle East and South East Asia.
Mumbai · Creep-Resisting 9Cr-1Mo-V Bar Stockist & Exporter
Alloy Steel F91 Round Bar
Chrome Moly F91 Rod In Round, Flat And Hex Section For Supercritical Boiler And Petrochemical Piping
Ganpat Industrial is an Alloy Steel F91 Round Bar Supplier in India with driven pricing on every size list. We forge and stock ASTM A182 F91 Round Bar with full EN 10204 3.1 traceability for supercritical and ultra-supercritical steam duty.
- ✓ISO 9001:2015
- ✓ISO 14001:2015
- ✓OHSAS 18001:2007
- ✓PED Certified
- ✓Petrofac Approved
UNS Designation
K90901
EN / Werkstoff 1.4903
Minimum Tensile
620 MPa
90 ksi, per ASTM A182 Table 2
Service Temperature
Up To 600°C
Supercritical & USC steam duty
Bar Trade Range
12 – 500 mm
Forged, hot rolled & bright finish
Creep Resistance ASTM A182 F91 Forged Bars Supplier in India with Vanadium & Niobium Additions
Specification Of Alloy Steel F91 Round Bar
Solution-treated ASTM A182 F91 Round Bar matches A335 P91 pipe and A234 WP91 fitting chemistry.
F91 Round Bar Material Basis
- Modified 9Cr-1Mo-V Martensitic Steel
- Vanadium & Niobium Carbonitride Strengthened
- UNS K90901
- Normalised & Tempered
Governing Bar Standards
- ASTM A182 / ASME SA182 Grade F91
- Companion ASTM A335 P91 Pipe
- EN X10CrMoVNb9-1
- Werkstoff No. 1.4903
Alloy Steel F91 Round Bar Size Range
- 12mm to 500mm Trade Diameter
- Forged Block Up To 1000mm On Drawing
- Custom Length Cut-To-Size
- Above 500mm Quoted On Enquiry
Alloy Steel F91 Bar Form & Section
- Round Bar & Rod
- Flat, Hex & Threaded Bar
- Bright, Black & Peeled Finish
- Forged Blocks & Billets
Delivery Condition
- Normalised At 1040-1080°C
- Tempered At 730-800°C
- Hardness 190-248 HBW
- Rough Turned On Request
Production Route
- Hot Forged / Hot Rolled From Billet
- Alloy Steel Grade F91 Hot Rolled Bar As-Cast Size
- Cold Drawn For Bright Bar
- Centreless Ground To Size On Request
Testing Offered
- PMI & Spectro Chemical Analysis
- Tensile, Hardness & Impact Test
- Ultrasonic & Liquid Penetrant Test
- Third Party Inspection
Matching Products
- A335 P91 Pipe & A213 T91 Tube
- A234 WP91 Fittings
- A182 F91 Flanges
- A217 Gr. C12A Castings
Packing
- Bundled With Heat & Grade Tags
- Anti-Rust Coated For Sea Freight
- Fumigated Wooden Crates
- Loose Or Bundled On Request
SA182 Gr F91 Bar Size Chart
| Section | Size Range | Typical Length |
|---|---|---|
| ASTM A182 Grade F91 Alloy Steel Rod (Round) | 12 mm – 500 mm dia | 1 – 9 metre, custom cut |
| SA182 F91 Alloy Steel Flat Bar / F91 Steel Flat Bar | 10 mm x 6 mm – 200 mm x 100 mm | 1 – 6 metre |
| SA 182 F91 Hex Bar | 10 mm – 100 mm A/F | 1 – 6 metre |
| Alloy Steel A182 F91 Threaded Bar | M10 – M100 equivalent | As drawing |
| ASTM A182 F91 Class 1 Flat Bars / Forged Block | Up to 1000 mm block, custom | As drawing |
SA 182 F91 Hex Bar Tolerance Chart
An Alloy Steel F91 Round Bar Manufacturer in India delivers precision-forged material for power applications.
| Dia Range (mm) | h9 | h10 | h11 | j9 / k9 |
|---|---|---|---|---|
| 12 – 18 | 0.043 | 0.070 | 0.110 | ±0.022 |
| 18 – 30 | 0.052 | 0.084 | 0.130 | ±0.026 |
| 30 – 50 | 0.062 | 0.100 | 0.160 | ±0.031 |
| 50 – 80 | 0.074 | 0.120 | 0.190 | ±0.037 |
| 80 – 120 | 0.087 | 0.140 | 0.220 | ±0.044 |
| 120 – 180 | 0.100 | 0.160 | 0.250 | ±0.050 |
A182 F91 Bright Bar Creep Rupture Strength & High Temperature Design Limits
Why Buyers Step Up From F9 And F22 Round Bars
Creep resistance, not corrosion resistance, is the buying reason for Alloy Steel F91 Round Bar. Vanadium and Niobium carbonitrides keep the bar strong at temperature over decades of service.
Max Service Temperature
~600 – 650°C
Supercritical Steam Range
Allowable Stress vs F9
Approx. 30% Higher
At 600°C, Design Basis
Wall Thickness vs F22
Thinner Section Possible
Lower Component Weight
Hydrogen Embrittlement
Good Resistance
Suited To Refinery Hydrocracker Duty
Types Of Alloy Steel F91 Bar We Supply
Every Alloy Steel F91 Round Bar Supplier in India maintains extensive stock for urgent timelines.
ASTM A182 F91 Round Bar
Round Section
F91 Steel Rod
Rod Section
SA182 F91 Alloy Steel Flat Bar
Flat Section
SA 182 F91 Hex Bar
Hex Section
Alloy Steel F91 Hot Rolled Bar
Hot Rolled
A182 F91 Bright Bar
Peeled & Polished
Alloy Steel A182 F91 Threaded Bar
Threaded Stud Bar
ASME SA 182 Alloy Steel F91 Bearing Quality Bar
Ground & Polished
Need Alloy Steel F91 Round Bars Above 500 mm?Mail the diameter, length and forging drawing. Bearing quality ground bar is quoted the same day.
Weekly Delivery Of Alloy Steel F91 Round Bar In Below Location
| Export To | Continent | Port | Shipping Time |
|---|---|---|---|
 UAE |
Asia | Port of Singapore | 11-50 Days |
 USA |
North America | Port of Los Angeles | 30-45 Days |
 Italy |
Europe | Port of Antwerp-Bruges | 20-54 Days |
Alloy Steel Grade F91 Rod Equivalent Standards
One Chemistry, Several Product Forms
SA182 GR F91 Rod shares modified 9Cr-1Mo-V chemistry with pipe, tube, and fitting counterparts.
ASTM / UNS
- ASTM A182 Grade F91
- UNS K90901 (Forging)
- ASME SA182 Gr. F91
DIN / EN / Werkstoff
- DIN / Werkstoff 1.4903
- EN X10CrMoVNb9-1
- Same UNS K90901 Basis
Matching Product Forms
- ASTM A335 / ASME SA335 Grade P91 Pipe
- ASTM A213 / ASME SA213 Grade T91 Tube
- ASTM A234 Grade WP91 Fittings
Plate & Casting
- ASTM A387 Grade 91 Class 2 Plate
- ASTM A217 Grade C12A Casting
- Same 9Cr-1Mo-V Chemistry Basis
Nearby ASTM Grades
- F22 Round Bars & UNS K21590 Triangle Bar (2.25Cr-1Mo)
- F9 Round Bar (Plain 9Cr-1Mo)
- F92 Round Bar (W-Bearing, Higher Creep Class)
Indian Market Note
- No Single-Number IS Equivalent
- Ordered Directly As F91 / UNS K90901
- Compared By Chemistry & Heat Treatment Basis
ASTM A182 F91 Round Bar Chemical Composition
Choosing a trusted Alloy Steel F91 Round Bar Supplier in India guarantees complete EN 10204 certification.
IronFe
Balance
ChromiumCr
8.00 – 9.50%
MolybdenumMo
0.85 – 1.05%
VanadiumV
0.18 – 0.25%
Niobium (Columbium)Nb
0.06 – 0.10%
NitrogenN
0.030 – 0.070%
ManganeseMn
0.30 – 0.60%
SiliconSi
0.20 – 0.50%
NickelNi
0.40% max
AluminiumAl
0.04% max
PhosphorusP
0.020% max
SulphurS
0.010% max
CarbonC
0.08 – 0.12%
ASTM A182 Alloy Steel Grade F91 Rod Mechanical Properties
Minimum Values, Normalised & Tempered Condition
Third-party inspectors verify these figures against mill test certificates for Alloy Steel F91 Round Bars.
Tensile Strength
620 MPa Min
90 ksi min, per ASTM A182 Table 2
Yield Strength (0.2%)
415 MPa Min
60 ksi min
Elongation
20% Min
In 2 in. [50 mm] gauge length or 4D
Reduction Of Area
40% Min
Confirms ductility after heat treatment
Brinell Hardness
190 – 248 HBW
Outside this band signals wrong heat treatment
Impact Toughness
Charpy On Request
Order-specific for low-temperature clauses
Delivery Condition
Normalised & Tempered
1040-1080°C then 730-800°C
Max Cross-Section
As Per Order
Properties confirmed at agreed test location
Physical Properties Of UNS K90901 Round Bar
Density
~7.75 g/cm³
Typical for 9-12%Cr martensitic steel
Melting Range
~1480 – 1530°C
Typical for 9Cr-1Mo-V chemistry
Modulus Of Elasticity
~210 – 215 GPa
At room temperature
Thermal Conductivity
Higher Than Austenitic SS
Good heat transfer for boiler duty
Coeff. Thermal Expansion
Lower Than Austenitic SS
Reduces thermal stress in thick sections
Magnetic Behaviour
Ferromagnetic
Martensitic structure, all conditions
Normalising Temp.
1040 – 1080°C
Followed by air cool
Tempering Temp.
730 – 800°C
Sets final hardness band
F91 vs F22 Round Bars vs F92 Round Bar
Buyers weighing F92 against F91 receive this technical comparison on almost every enquiry.
F22 Round Bars (2.25Cr-1Mo)
- Lower cost, widely available
- No Vanadium or Niobium addition
- Lower allowable stress above 550°C
- Fine for moderate temperature duty
Alloy Steel F91 Round Bar
- Vanadium & Niobium raise creep strength
- Rated for supercritical steam to ~600°C
- Thinner sections for the same design pressure
- Premium for high-temperature, high-pressure duty
F92 Round Bar (9Cr-0.5Mo-1.8W)
- Higher creep strength than F91
- Tungsten addition, higher material cost
- Used for ultra-supercritical (620°C+) duty
- Narrower global supply base
Alloy Steel F91 Round Bar
- Proven track record since the 1990s
- Easier to weld and post-weld heat treat
- Lower cost than F92 for the same order
- Standard choice up to ~600°C steam
Forging, Normalising & Tempering Route For F91 Bar
From Billet To Certified Bar
A quick look at how UNS K90901 billet becomes a finished, traceable Alloy Steel F91 Round Bar.
Hot Forging / Rolling
Billet reduced to round, flat or hex bar section
Normalising
Heated 1040-1080°C then air cooled to form martensite
Tempering
Reheated 730-800°C to set final hardness band
Inspection
Chemistry, hardness, straightness and PMI cleared
Dispatch
Tagged and shipped with EN 10204 3.1 certificate
Alloy Steel F91 Round Bar Monthly Delivery In Below Countries
| Export To | Continent | Port | Shipping Time |
|---|---|---|---|
 Germany |
Europe | Port of Rotterdam | 20-45 Days |
 Spain |
Europe | Port of Hamburg | 33-34 Days |
 Malaysia |
Asia | Port of Shanghai | 19-23 Days |
Alloy Steel F91 Round Bar Application Industries
Discover Chrome Moly F91 Rod and Bright Bar in Length Ranging 1m to 9 mm for Supercritical Steam Applications
Supercritical & Ultra-Supercritical Boilers
Main Steam & Hot Reheat Piping
HRSG Headers & Manifolds
Refinery Hydrocracker & Hydrotreater Piping
Petrochemical Reformer Furnace Components
Turbine Casing & Rotor Support Rings
High-Temperature Valve & Pump Shafts
Nuclear Structural Components
Alloy Steel F91 Rods Weight Chart
Weight per metre uses a 7.75 g/cm³ density for common 9Cr-1Mo-V rack diameters.
| Dia (mm) | Kg / Metre | Dia (mm) | Kg / Metre |
|---|---|---|---|
| 12 | 0.88 | 75 | 34.23 |
| 16 | 1.56 | 100 | 60.86 |
| 20 | 2.43 | 150 | 136.94 |
| 25 | 3.80 | 200 | 243.44 |
| 32 | 6.23 | 250 | 380.38 |
| 40 | 9.74 | 300 | 547.74 |
| 50 | 15.22 | 400 | 973.76 |
| 63 | 24.16 | 500 | 1521.50 |
Documentation Supplied With SA182 GR F91 Rod
Every dispatch of Alloy Steel F91 Round Bar leaves with a full paper trail, not just a delivery challan.
Mill Test Certificate
EN 10204 3.1 with full chemistry, tensile and hardness data
Standard
PMI / Chemical Analysis Report
Spectro reading confirming Cr, Mo, V, Nb and N against F91 limits
Standard
Heat Treatment Chart
Records the normalising and tempering cycle applied to the heat
Standard
Third Party Inspection Certificate
SGS, BV, TUV or Lloyd’s witnessed on request
On Request
Certificate Of Origin & Packing List
Required for customs clearance on export shipments
Export Orders
Chrome Moly F91 Rod Testing
Chemical / PMI Analysis
Spectro reading against ASTM A182 F91 composition limits
Hardness Test
Brinell readings checked against the 190-248 HBW band
Tensile & Yield Test
Tensile, yield and elongation tested per ASTM A182
Impact Test
Charpy V-notch offered where the order calls for it
Dimensional Inspection
Diameter, straightness and length checked against tolerance
Ultrasonic & Third Party Inspection
UT for internal soundness; SGS, BV or TUV called on request
Alloy Steel F91 Round Bar Price In India
Driven Pricing, Not A Flat Rate Card
Alloy surcharges change weekly, so quotations track current base metal values.
Send a size-wise quantity list for per-kg pricing. Get it inside 24 hours. HSN and GST are already worked out on our side.
Stock, MOQ & Dispatch Timeline
From Enquiry To Gate Pass
The real clock on an Alloy Steel F91 Round Bar order, not a marketing promise.
Day 0 – Enquiry
Mail diameter, length, finish and quantity to our Mumbai desk
Day 1 – Driven Quote
Per-kg rate against the day’s reference cost, HSN and GST included
Day 4 – Inspection
Chemistry, hardness and PMI cleared, TPI called if needed
Day 6 – Dispatch
Rack sizes leave with LR copy and full document set
Rack Stock
12 – 150 mm Dia
Round, hex and flat held in Mumbai
Minimum Order
200 Kg
Per size, trial lots considered
Large Dia Lead Time
25 – 35 Days
Above 150mm, forged against order
Export Transit
Nhava Sheva
Air or sea, FOB CFR CIF DDP quoted
Alloy Steel F91 Round Bar Frequently Asked Questions
What is the material Grade F91 Alloy Steel Rod?
A modified 9Cr-1Mo martensitic alloy steel, ASTM A182, UNS K90901.
What is the price of a 25mm UNS K90901 Round Bar?
Price varies with alloy costs; share quantity over WhatsApp or email for a quote.
How much does a 12-mm A182 F91 Bright Bar weigh per metre?
Approximately 0.88 kg per metre, based on 7.75 g/cm³ density.
Is Alloy Steel F91 Hot Rolled Bar magnetic?
Yes, it’s martensitic and ferromagnetic in all supply conditions.
What is the HSN code for Alloy Steel F91 Round Bar?
HSN 7228, taxed at 18% GST in India.
Call Now for the Clients List Based in Below Cities
| Texas (USA) | California (USA) |
| Al Jubail (Saudi Arabia) | Dubai (UAE) |
| Dammam (Saudi Arabia) | Abu Dhabi (UAE) |
| Riyadh (Saudi Arabia) | Houston (USA) |
| Al Khobar (Saudi Arabia) | Indiana (USA) |
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