What Makes Ganpat Industrial Corporation The Trusted Source For Stainless Steel 904L Round Bar ?
Quote In 24 Hours
Send diameter, length and quantity before 6 PM IST for next-morning pricing
Mill-Traceable Super Austenitic Steel
Every bar carries a heat number back to the mill test certificate
Bright, Black & Peeled Bars On Rack
Multiple diameters and finishes held ready in Mumbai stock
Same-Week Dispatch
Rack sizes leave Mumbai within 5 working days of PO release
Zero Rejection Cost
PMI, corrosion resistance and dimensional checks cleared before the box is strapped
Stainless Steel 904L Round Bar Data
- 1Material Basis: Super-Austenitic Stainless Steel • UNS N08904 • 1.4539
- 2Governing Standards: ASTM A276 UNS N08904 Rod • ASME SA276 • ASTM B649 / ASME SB649 Bar
- 3Size Range: Round Bar 3 mm to 800 mm • Square 4 mm to 100 mm • Hex & Flat 2 mm to 100 mm
- 4Alloying: High Cr-Ni-Mo-Cu Content • PREN ≥ 34 • Non-Magnetic Austenitic Structure
- 5Equivalents: DIN/EN 1.4539 • JIS SUS890L • BS 904S13 • KS STS 317J5L
- 6Forms Supplied: Round, Square, Hex, Flat, Forged, Hollow & Bright Bar Ex-Stock Mumbai
Mumbai works desk • WhatsApp +91 85912 64209 • Driven pricing on every size list
Ganpat Industrial Corporation has stocked stainless and nickel alloy bar in Mumbai since 1997. Stainless Steel 904L Round Bar sits above 316L on the corrosion ladder. It carries 4.0-5.0% molybdenum and 1.0-2.0% copper for acid resistance. This helps it resist sulphuric and phosphoric acid attack. We hold ASTM A276 UNS N08904 Rod and ASTM B649 bar. Sections include round, square, hex and flat. All bars are machined and solution-annealed at our Mumbai facility. UNS N08904 heat traceability carries through on every despatch. Every despatch includes an EN 10204 3.1 mill test certificate. We regularly ship this bar to Vadodara, Chennai and Kandla. We also export to Dubai, Jebel Ali, Rotterdam and Houston.
Mumbai · Super-Austenitic 6-Moly Class Bar Stockist & Exporter
Stainless Steel 904L Round Bar That Handles Sulphuric And Phosphoric Acid Where 316L Gives Up
Ganpat Industrial is a driven-pricing Stainless Steel 904L Round Bar Supplier in India. We stock ASTM A276 UNS N08904 Rod from 3 mm to 800 mm with full EN 10204 3.1 traceability.
- ✓ISO 9001:2015
- ✓ISO 14001:2015
- ✓OHSAS 18001:2007
- ✓PED Certified
- ✓Petrofac Approved
UNS Designation
N08904
EN / Werkstoff 1.4539
PREN Rating
≥ 34
Ahead of 316L (PREN 23-28)
Magnetic Behaviour
Non-Magnetic
Austenitic structure, all conditions
Round Bar Range
3 – 800 mm
Hot rolled, forged & cold drawn
Non-magnetic ASTM A276 UNS N08904 Rod Supplier in India with Driven Pricing
Specification Of Stainless Steel 904L Round Bar
Solution-annealed 904L round bar also meets NACE MR0175 / ISO 15156 for sour service.
904L Round Bar Material Basis
- Super Austenitic Stainless Steel
- High Nickel-Molybdenum-Copper Alloy
- UNS N08904
- Solution Annealed
Governing Bar Standards
- ASTM A276 / A479 Grade 904L
- ASME SA276 / SA479
- EN 1.4539 / DIN 17440
- Werkstoff No. 1.4539
904L Stainless Round Bar Size Range
- 5mm to 300mm Diameter
- 3/16″ to 12″ equivalent diameter
- Custom lengths cut-to-size
- Above 300mm quoted on request
Stainless Steel 904L Bar Form & Section
- Round Bar & Rods
- Bright, Black & Peeled Finish
- Hex & Square Bar On Request
- Forged Blocks & Billets
Delivery Condition
- Solution Annealed & Pickled
- Annealing Temp 1150°C Min
- Bright / Polished Finish
- Rough Turned On Request
Production Route
- Hot Rolled / Forged From Billet
- Cold Drawn For Bright Bar
- Solution Annealing Heat Treatment
- Centreless Ground To Size
Testing Offered
- PMI Spectro Analysis
- Intergranular Corrosion (IGC) Test
- Tensile & Hardness Test
- Third Party Inspection
Matching Products
- 904L Stainless Steel Pipe & Tube
- 904L Flanges & Fittings
- 904L Fasteners & Wire
- 904L Sheet & Plate
Packing
- Bundled With Grade Tags
- PVC Wrapped For Bright Bar
- Fumigated Wooden Crates
- VCI Wrap For Sea Freight
Types Of SS 904L Bar We Supply
A trusted Stainless Steel 904L Round Bar Manufacturer in India ensures precise metallurgical control.
Stainless Steel 904L Round Bar
Round Section
Stainless Steel 904L Square Bar
Square Section
AISI 904L Stainless Steel Hex Bar
Hex Section
SS 904L Flat Bar
Flat Section
904L SS Forged Bars
Forged Blank
SS UNS N08904 Bright Bar
Peeled & Polished
SS 904L Hollow Bar
Centre-Bored
ASTM A276 Grade 904L Hot Rolled Bar
Hot Rolled
Need Austenitic Stainless Steel 904L Rods Above 400 mm?Mail the diameter and length for large sizes. Forged 904L SS Forged Bars are quoted the same day.
ASTM A276 UNS N08904 Rod Size Chart
Partner with a Stainless Steel 904L Round Bar Supplier in India for severe environments.
| Section | Size Range | Typical Length |
|---|---|---|
| ASTM A276 UNS N08904 Rod (Round) | 3 mm – 800 mm dia | 1 – 6 metre, custom cut |
| Stainless Steel 904L Square Bar | 4 mm x 4 mm – 100 mm x 100 mm | 1 – 6 metre |
| AISI 904L Stainless Steel Hex Bar | 2 mm – 100 mm A/F | 1 – 6 metre |
| SS 904L Flat Bar | 2 mm – 100 mm thickness | 1 – 6 metre |
| 904L SS Forged Bars / Ingot | Up to 500 mm block, custom | As drawing |
AISI 904L Stainless Steel Hex Bar Tolerance Chart
Standard ISO tolerance classes held for ASTM A276 UNS N08904 round bar.
| Dia Range (mm) | h9 | h10 | h11 | j9 / k9 |
|---|---|---|---|---|
| 3 – 6 | 0.030 | 0.048 | 0.075 | ±0.015 |
| 6 – 10 | 0.036 | 0.058 | 0.090 | ±0.018 |
| 10 – 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 |
SS 904L Round Bar Chemical Composition
Composition held against ASTM A276 UNS N08904 heat analysis limits on every cast.
IronFe
Balance
NickelNi
23.0 – 28.0%
ChromiumCr
19.0 – 23.0%
MolybdenumMo
4.0 – 5.0%
CopperCu
1.0 – 2.0%
ManganeseMn
2.00% max
SiliconSi
1.00% max
NitrogenN
0.10% max
PhosphorusP
0.045% max
SulphurS
0.035% max
CarbonC
0.020% max
Buy AISI 904L Stainless Steel Hex Bar Size from 3 mm to 800 mm for General Corrosive Service
SUS 904L Stainless Steel Bright Bar Corrosion Resistance & PREN Rating
Why Buyers Step Up From 316L
PREN is a quick way to compare chloride resistance across grades. Check it before committing to a bar.
PREN (904L)
≥ 34
Cr + 3.3Mo + 16N
Sulphuric Acid
Strong Resistance
Copper-Aided
Chloride / Seawater
Warm Seawater Rated
Ambient Service
Max Structural Stability
Up To 400°C
Above This, Review Grade
Weekly Delivery of Hastelloy C276 Pipe 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 |
ASTM A276 904L Round Bar Mechanical Properties
Minimum Values, Annealed Condition A
These are the numbers your inspector will check against the mill test certificate.
Tensile Strength
490 MPa Min
71 ksi min, per ASTM A276
Yield Strength (0.2%)
220 MPa Min
31-32 ksi min
Elongation
35% Min
In 2 in. [50 mm] gauge length
Hardness
90 HRB Max
Approx. 200 HB max
Physical Properties Of 904L Stainless Steel Round Bar
This Stainless Steel 904L Round Bar Supplier in India stocks material for acid service.
Density
7.95 g/cm³
0.287 lb/in³, typical range 7.9-8.05
Melting Range
1350 – 1400°C
2460 – 2550°F approx
Modulus Of Elasticity
190 – 200 GPa
At room temperature
Thermal Conductivity
11.5 – 12 W/m·K
At 20°C
Electrical Resistivity
~950 nΩ·m
At 20°C
Coeff. Thermal Expansion
15 – 18 µm/m·K
Varies with temperature band
Specific Heat
460 – 500 J/kg·K
0-100°C
Magnetic Permeability
< 1.05 µ
Effectively non-magnetic
SS UNS N08904 Bright Bar Equivalent Grades
One Chemistry, Several Nameplates
Stainless Steel 904L Round Bar reads the same super-austenitic chemistry across every national standard.
ASTM / UNS
- ASTM A276 UNS N08904
- ASTM B649 / ASME SB649
- ASME SA276
DIN / EN / Werkstoff
- DIN / Werkstoff 1.4539
- EN X1NiCrMoCu25-20-5
- Same UNS N08904 Basis
JIS / BS / KS
- JIS SUS890L
- BS 904S13
- KS STS 317J5L
AFNOR
- Z2 NCDU 25-20
- Matches EN 1.4539
- Confirmed On Order
Nearby ASTM Grades
- ASTM A276 316L (Lower Alloy)
- ASTM A276 317L
- ASTM A276 N08926 (6-Mo)
Indian Market Note
- No Single-Number IS Equivalent
- Ordered Directly As 904L / N08904
- Compared By Chemistry Basis
904L vs 316L vs Duplex 2205
Buyers often compare 904L with 316L and Duplex 2205. We get asked this on almost every acid-service enquiry.
SS 316L Round Bar
- Lower cost, widely available
- PREN 23-28, moderate chloride resistance
- No copper addition
- Fine for mild chemical duty
Stainless Steel 904L Round Bar
- PREN ≥34, higher molybdenum & nickel
- Copper addition resists sulphuric & phosphoric acid
- Non-magnetic, excellent formability
- Premium for acid and chloride duty
Duplex 2205 Round Bar
- Higher mechanical strength than 904L
- Similar corrosion resistance, lower cost
- Not recommended above 300°C
- Ferritic-austenitic mixed structure
Stainless Steel 904L Round Bar
- Fully austenitic, easier to form and weld
- Better in strong reducing acids
- Higher nickel and molybdenum cost
- Preferred where duplex is unsuitable
904L SS Forged Bars Manufacturing & Heat Treatment
From Billet To Certified Bar
A quick look at how UNS N08904 billet becomes a finished, traceable round bar.
Hot Rolling / Forging
Billet reduced to round, square or hex bar section
Solution Annealing
Heated 1090-1175°C then rapid water quenched
Cold Drawing / Peeling
Bright, hex and peeled bar sized to close tolerance
Inspection
Chemistry, hardness, straightness and PMI cleared
Dispatch
Tagged and shipped with EN 10204 3.1 certificate
Monthly Delivery of Hastelloy C276 Pipe 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 |
Stainless Steel 904L Square Bar Application Industries
Sulphuric & Phosphoric Acid Plant
Offshore & Seawater Cooling
Pulp & Paper Bleaching
Fertiliser Production
Flue Gas Desulphurisation
Pharmaceutical Process Shafts
Heat Exchanger Components
Chemical Pump & Valve Shafts
Austenitic Stainless Steel 904L Rods Weight Chart
Weight per metre calculated at 7.95 g/cm³ density for common rack diameters.
| Dia (mm) | Kg / Metre | Dia (mm) | Kg / Metre |
|---|---|---|---|
| 10 | 0.62 | 75 | 35.11 |
| 20 | 2.50 | 100 | 62.42 |
| 25 | 3.90 | 150 | 140.44 |
| 32 | 6.39 | 200 | 249.68 |
| 40 | 9.98 | 300 | 561.78 |
| 50 | 15.60 | 500 | 1560.50 |
| 63 | 24.78 | 800 | 3994.88 |
Stainless Steel 904L Round Bar Price In India
Driven Pricing, Not A Flat Rate Card
Nickel and molybdenum prices move week to week. So 904L pricing follows the day’s LME reference. These are the factors we consider.
Send a size-wise quantity list for per-kg pricing. Get it inside 24 hours, based on nickel and molybdenum rates. HSN and GST are already worked out.
Stock, MOQ & Dispatch Timeline
From Enquiry To Gate Pass
The real clock on a Stainless Steel 904L 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 Ni-Mo reference, HSN and GST included
Day 3 – Inspection
Chemistry, hardness and PMI cleared, TPI called if needed
Day 5 – Dispatch
Rack sizes leave with LR copy and full document set
Rack Stock
10 – 100 mm Dia
Round, hex and square held in Mumbai
Minimum Order
200 Kg
Per size, trial lots considered
Large Dia Lead Time
20 – 25 Days
Above 200mm, indented against order
Export Transit
Nhava Sheva
Air or sea, FOB CFR CIF DDP quoted
1.4539 AISI 904L Cold Rolled Bar Testing
A serious 904L Round Bar Supplier tests every heat before dispatch, and backs it with full paperwork.
Chemical / PMI Analysis
Spectro reading against UNS N08904 composition limits
Hardness Test
Rockwell B / Brinell readings recorded lot wise
Tensile & Yield Test
Tensile, yield and elongation tested per ASTM A276
Intergranular Corrosion Test
ASTM A262 Practice E confirms weld-sensitisation resistance
Dimensional Inspection
Diameter, straightness and length checked against tolerance
Third Party Inspection
SGS, BV, TUV or Lloyd’s arranged before dispatch
Stainless Steel 904L Round Bar Frequently Asked Questions
What is 904L stainless steel used for?
Used in acid plants, seawater cooling, paper bleaching, fertiliser and pharma equipment.
Which is better, 316L or 904L?
904L has higher PREN and resists acids better; 316L is more economical.
What are the disadvantages of 904L steel?
Higher cost than 316L, lower strength than duplex, limited above 400°C.
Is 904L stainless steel magnetic?
No, 904L is fully austenitic and non-magnetic in annealed condition.
What is the HSN code for Stainless Steel 904L Round Bar?
HSN 7222, taxed at 18% GST in India.
See Where You Can Find Material Ex Stock
| 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