ISO 9001 Certified Inconel 601 Flange Manufacturer in Mumbai Oxidation Resistant To 1200°C with MTC EN 10204 3.1 and 3.2 Serving Furnace and Thermal-Processing OEMs In 15+ Countries

Hastelloy B3 Flanges

PMI Tested WNR. 2.4600 Blind Flange Company Profile

Sizes In StockNPS ½″ to 24″ • Class 150 to 2500
Delivery TimeEx-Stock 2 to 5 Days • Mill-Order 6 to 9 Wks
Class Range150# / 300# / 600# / 900# / 1500# / 2500#
Dimensional StandardANSI B16.5 • ASME B16.47 Series A and B
Defining DutyHydrochloric Acid At All Concentrations
Key Alloying ElementsNi 65 min • Mo 27.0 to 32.0 • Cr 1.0 to 3.0
Manufacturing ProcessForged, Solution Annealed and Machined
MTC CertificateEN 10204 3.1 and 3.2
Standard DesignationASTM B564 • ASME SB564 • UNS N10675 • WNR 2.4600
Forms SuppliedWNRF SORF BLRF SWRF RTJ Lap Joint and Expander
G28 Tested
Intergranular Checked
Method A results filed against every heat we release
2 To 5 Days
Ex-Stock Dispatch
Held classes reach packing once the advance clears
Acid Duty Proven
HCl At Any Strength
Specified where chromium bearing alloys give up
19 Country Lanes
Export Track Record
Jebel Ali to Vancouver on fixed weekly sailings
Forge Direct
No Trader Margin
Billet to faced flange inside our own Mumbai units
Free Acid Check
Talk To Our Engineer
Send concentration and temperature before ordering
hastelloy b3 flanges

 

0 · at glance

Who You Are Buying From

Established

Since 2012 • 15+ yrs experience

Manufacturing Units

2 in-house units • Taloja & Mazgaon

Stockyard Area

8,850+ sq.ft • Ready-stock inventory

Certifications

ISO 9001:2015, PED • GST, IEC & MSME

Clientele

100+ clients • India & export markets

Export Reach

15+ countries • Europe, GCC & APAC

Testing Offered

Mechanical, chemical, PMI & NDT • MTC EN 10204 3.1 & 3.2

Shipment Documents

Invoice, Packing List • COO, COI, MTC, BL & Lab Report

MTC 3.1 Certified ASTM B564 UNS N10675 RTJ Flanges Manufacturer in India

Hastelloy B3 is a nickel molybdenum alloy. Nickel 65 percent minimum and molybdenum 27 to 32 percent. It holds hydrochloric acid at any strength and any temperature. We forge and machine every pattern in Mumbai to ANSI B16.5. Half inch to 24 inch NB, Class 150 to 2500. Each piece ships with an EN 10204 3.1 certificate.

B3 replaced B2 for one reason. B2 turns brittle near 750°C as Ni₄Mo forms fast. That made welding risky. B3 adds chromium and iron. The reaction shifts to slow Ni₃Mo. The flange stays ductile through fabrication.

UNS N10675 WNR 2.4600 ASTM B564 ASME SB564 Alloy B-3
01 · Specification

Hastelloy B3 Flanges Specification

Certification, testing and delivery condition. Size and class sit in the band above.

hastelloy b3 flange specification  

ASTM B564 Hastelloy B3 Flanges Face and Thread

  • RTJ RF and FF facing
  • NPT BSPT BSPP and MNPT thread

Hastelloy 2.4600 Flanges Finish

  • Forged and machined from solution annealed billet
  • Smooth serrated and spiral serrated face finish

ASME SB564 Hastelloy B3 Flanges Testing and Documentation

  • Tensile PMI hydrostatic and ultrasonic
  • MTC 3.1 with ASTM G28 Method A and TPI on request

UNS N10675 Screwed Flange Compliance

  • PED 2014/68/EU documentation
  • ASME Code Case 2140 for solution annealed material

Hastelloy B3 Flanges Supporting Material

  • Bar to ASTM B335 and plate to ASTM B333
  • Seamless pipe to ASTM B622 and fittings to ASTM B366

ASTM B564 Hastelloy Alloy B3 Flange Size and Class

  • NPS ½″ to 24″ under ANSI B16.5
  • Class 150 to 2500 with B16.47 above 24″

Hastelloy N10675 Flanges Delivery Condition

  • Solution annealed and rapidly quenched
  • Single phase structure locked before machining

ANSI B16.5 Hastelloy B3 Flanges Acid Service

  • Hydrochloric acid at every concentration
  • Sulphuric phosphoric acetic and formic duty

Hastelloy B3 Flanges Manufacturing Route

  • Open die forged then CNC machined in house
  • Grain size ASTM No. 5 or coarser per B564

Hastelloy B3 Flanges Welding Consumables

  • ERNiMo-10 wire for GTAW and GMAW
  • ENiMo-10 electrode for SMAW

UNS N10675 Flanges Forged In-House at Our Mumbai Units

Send the acid, the temperature and the class. We answer with a machined weight the same day.

Request Quote Now
Global Reach

Hastelloy B3 Flanges Supplier Across The Middle East

Acetic acid and refinery overhead lines pull this grade in the Gulf.

Middle East and GCC
UAEDubai
UAEAbu Dhabi
Saudi ArabiaDammam
Saudi ArabiaJubail
QatarDoha
TurkeyMersin
TurkeyIstanbul
02 · Product Range

Types of Hastelloy B3 Flanges

Twelve patterns machined in house. Hastelloy B3 Flanges manufacturer in Mumbai cuts each facing.

Hastelloy B3 Blind Flange

Hastelloy B3 Blind Flange

ANSI B16.5 • All Classes
  • Closes a nozzle or vessel opening
  • PMI stamped before it leaves the bench
Hastelloy 2.4600 Flanges Slip On

Hastelloy 2.4600 Flanges Slip On

ANSI B16.5 • Class 150 to 600
  • Two fillet welds and easier alignment
  • Chosen where line pressure stays moderate
UNS N10675 Screwed Flange

UNS N10675 Screwed Flange

ANSI B16.5 • ≤4″ NB
  • Threaded connection for lines that cannot be welded
  • Common on small bore acid dosing runs
Hastelloy B3 Socket Weld Flange

Hastelloy B3 Socket Weld Flange

ANSI B16.5 • ≤3″ NB
  • Small bore lines within the B16.5 socket limit
  • Fillet weld on the outside of the hub
ASTM B564 UNS N10675 RTJ Flange

ASTM B564 UNS N10675 RTJ Flange

ANSI B16.5 • Class 600 to 2500
  • Octagonal or oval groove cut to R number
  • Metal to metal seal for high pressure duty
Hastelloy B3 Raised Face Flanges

Hastelloy B3 Raised Face Flanges

ANSI B16.5 • Class 150 to 2500
  • Smooth or serrated finish to your gasket spec
  • The default facing on most acid lines
Hastelloy B3 Flat Face Flange

Hastelloy B3 Flat Face Flange

ANSI B16.5 • Class 150 and 300
  • Full face gasket contact across the ring
  • Used against cast or lined equipment
Hastelloy B3 Lap Joint Flange

Hastelloy B3 Lap Joint Flange

ANSI B16.5 • With Stub End
  • Backing flange never touches the acid
  • Only the stub end wets in service
Hastelloy B3 Orifice Flange

Hastelloy B3 Orifice Flange

ASME B16.36 • Class 300 up
  • Tapped for flow measurement across the plate
  • Supplied with jack screws and tappings
ANSI B16.5 Hastelloy B3 Expander Flange

ANSI B16.5 Hastelloy B3 Expander Flange

Two Bore Sizes • One Forging
  • Combines flange and reducer to shorten the spool
  • Saves one weld on a congested rack
03 · Composition

UNS N10675 Screwed Flange Chemical Composition

Percent by weight for UNS N10675. Chromium and iron are additions B2 does not carry. Your Hastelloy B3 Flanges Manufacturer in India checks heat.

Chemical Composition per UNS N10675 (% by weight)
Ni65.0 minNickel
Mo27.0 to 32.0Molybdenum
Cr1.0 to 3.0Chromium
Fe1.0 to 3.0Iron
Co3.0 maxCobalt
Mn3.0 maxManganese
W3.0 maxTungsten
Al0.50 maxAluminium
Cu0.20 maxCopper
Ti0.20 maxTitanium
V0.20 maxVanadium
Nb0.20 maxNiobium
Ta0.20 maxTantalum
Si0.10 maxSilicon
Zr0.10 maxZirconium
C0.01 maxCarbon
P0.030 maxPhosphorus
S0.03 maxSulphur
04 · Strength Data

ASME SB564 Hastelloy B3 Flanges Mechanical Properties

Minimum room temperature values from ASTM B564. Solution annealed condition. Your Hastelloy B3 Flanges Manufacturer in India tests everything.

Tensile Strength760 MPa / 110 ksi min
Yield Strength (0.2%)350 MPa / 51 ksi min
Elongation40% min
05 · Cross-Reference

ANSI B16.5 Hastelloy B3 Flanges Material Equivalent

One alloy, several names. Any of these on a drawing means the same forging. Your Hastelloy B3 Flanges Supplier in India confirms this.

USAASTM / ASME (USA)

  • UNS N10675
  • ASTM B564 (Forgings and Flanges)
  • ASTM B335 (Bar) / ASTM B333 (Plate)
  • ASTM B622 (Seamless Pipe) / ASTM B366 (Fittings)

GermanyDIN / EN (Germany)

  • Werkstoff 2.4600
  • NiMo28
  • VdTUV data sheet listed

United KingdomTrade and Code Names

  • Hastelloy B-3
  • Alloy B-3
  • ASME Code Case 2140

PMI Tested WNR. 2.4600 Blind Flange used in Extremely Corrosive Environments

06 · Verification

Hastelloy B3 Flate Face Flange PMI Verification

B3 and B2 look identical. Only a PMI gun tells them apart. Your Hastelloy B3 Flanges Exporter in India shares readings.

Chromium Is The Tell

B3 reads 1.0 to 3.0 percent. B2 never passes 1.0. This single number separates them.

B3 1.0 to 3.0

Iron Confirms It

B3 reads 1.0 to 3.0 percent. B2 stops at 2.0 max. Read alongside chromium.

B3 1.0 to 3.0

Molybdenum Overlaps

B3 runs 27.0 to 32.0. B2 runs 26.0 to 30.0. The bands cross, so this alone proves nothing.

Not Conclusive

Werkstoff On The Stamp

B3 is 2.4600. B2 is 2.4617. Four digits apart and easy to misread on a worn face.

WNR 2.4600

Why It Matters

B2 carries no chromium. Trace ferric chloride in the acid eats it while B3 holds.

Plant Risk

What We Do

Every blind flange is PMI read before stamping. The reading is filed against the heat.

Filed To Heat
07 · Acid Service

Hastelloy N010675 Flanges Hydrochloric Acid Service Map

The one reason this grade is specified. Nothing else matches it in pure reducing acid. Your Hastelloy B3 Flanges Supplier in India confirms duty.

Hydrochloric AcidEvery concentration and temperature. The duty this grade was built for.
Hydrobromic and SulphuricVery high resistance in the pure acids.
Phosphoric Acetic and FormicStable in reactors and columns.
Hydrogen Chloride GasDry HCl gas lines and feed vessels.
500 to 900°C HoldSecond phases form here. Solution annealed condition matters.
Metal Ion ContaminationSend iron and copper content. Their salts change the answer.
Global Reach

Hastelloy B3 Flanges Exporter Into Africa

Copper and cobalt leach circuits put this alloy on the drawing.

Africa
South AfricaDurban
South AfricaJohannesburg
KenyaMombasa
KenyaNairobi
UgandaKampala
08 · Service Limits

Where UNS N10675 Screwed Flange Must Not Be Used

Specified wrong, this alloy fails fast. Read these before the order goes out. Your Hastelloy B3 Flanges Exporter in India flags this.

Rule Out Alloy B3 In These Six Duties

This grade is a specialist. In the wrong duty it fails faster than plain stainless. These six duties always need another alloy.

OXIDISING MEDIANitric acid and oxidising salts
FERRIC AND CUPRIC SALTSFormed by iron or copper in HCl
WET CHLORINEChlorinated water and bleach duty
HOT SEAWATERChloride pitting outruns the alloy
500 TO 900°C HOLDSecond phases form in this band
SULPHUR BEARING GASOxidising sulphur atmospheres
  • Why it fails. Only 1.0 to 3.0 percent chromium. Too little for a passive oxide film. In reducing acid that helps. In oxidising duty it is the weakness.
  • The trap buyers fall into. Ferric and cupric salts rarely reach the enquiry. They form once iron or copper enters an HCl system. The duty looked correct on paper.
  • Specify this instead. Hastelloy C276 for oxidising media and wet chlorine. Send metal ion content with your acid data. We confirm the grade in writing.

ASTM B564 Hastelloy B3 Flanges Exporter to Canada from India

Oil sands and acid plant buyers get a landed cost line, not just an ex works figure.

Request Export Quote
09 · Comparison

ASTM B564 Hastelloy B3 Flanges Compared With B2 And C276

Three alloys buyers weigh up. The decider is simple. Is the acid reducing or oxidising? Your Hastelloy B3 Flanges Manufacturer in India helps choose.

Hastelloy B2 (N10665)

  • Chromium: No deliberate addition
  • Hydrochloric Acid: All concentrations and temperatures
  • Thermal Stability: Brittle Ni₄Mo forms rapidly near 750°C
  • Best For: Legacy plant only, superseded on new build

Hastelloy B3 (N10675)

  • Chromium: 1.0 to 3.0% plus 1.0 to 3.0% iron
  • Hydrochloric Acid: All concentrations and temperatures
  • Thermal Stability: Shifts to slow forming Ni₃Mo, ductility held
  • Best For: Pure reducing acid duty on new build

Hastelloy C276 (N10276)

  • Chromium: Roughly 16% with tungsten added
  • Hydrochloric Acid: Good but not equal to the B grades
  • Thermal Stability: Ni₄Mo is not a concern
  • Best For: Oxidising media and wet chlorine service
10 · Fabrication

ANSI B16.5 Hastelloy B3 Expander Flange Welding And Thermal Stability Window

Get the filler and the thermal window right. The joint then matches the parent metal. Your Hastelloy B3 Flanges Supplier in India follows this.

Prepare The Edge

Grind off all oxide. Keep iron tooling off the face.

Choose The Consumable

ERNiMo-10 wire for GTAW and GMAW. ENiMo-10 rod for SMAW.

Hold The Window

No preheat needed. Keep interpass low. Clear the 500 to 900°C band fast.

Solution Anneal

Anneal then quench fast. That locks the single phase back in.

Guard Against Ni₄Mo

Time in the band forms second phases, not peak heat alone.

Verify The Joint

PMI the weld. Run ASTM G28 Method A if the spec asks.

Surface Examination

Dye penetrant on cap and root before it leaves the bench.

Record It

Procedure, filler lot and anneal record go on your certificate.

Global Reach

ANSI B16.5 Hastelloy B3 Flanges Across The Americas

Houston and Vancouver move on fixed weekly sailings from Nhava Sheva.

Americas
United StatesHouston
CanadaOntario
CanadaAlberta
MexicoVeracruz
VenezuelaPuerto Cabello
11 · Industries

Hastelloy N10675 Flanges Industry Applications

Grouped by the acid the flange meets, not by industry label. Your Hastelloy B3 Flanges Exporter in India serves all.

Hydrochloric Acid PlantsAbsorbers, strippers and every nozzle on the acid loop.
Chemical ProcessingReaction vessels built for pure reducing acid service.
Acetic Acid UnitsReactor and column nozzles in organic acid duty.
PetrochemicalRefinery overhead lines where chloride condensate collects.
PharmaceuticalReactor trains handling strong non oxidising acids.
Acid RecoveryRegeneration plant pipework and vessel connections.
Pesticide And AgroChlorination stages and HCl handling equipment.
Mining And LeachingCopper and cobalt leach circuits on the acid side.

Full Inspection File on Every Hastelloy B3 Flange Shipped to Singapore

Inspection paperwork is closed before the crate is sealed, not after you ask.

Get Supplier Quote
12 · Turnaround

ASME SB564 Hastelloy B3 Flanges Delivery Estimate

Counting starts when the advance clears. Hastelloy B3 Flanges exporter in Mumbai books the sailing.

Ex-Stock Dispatch

Held classes reach packing in 2 to 5 days

Sea Freight

Full crates move in 8 to 40 days by lane

Air Freight

3 to 7 days when an acid line is down

Country-Specific ETA

Name the port. We confirm the vessel in writing

13 · Quality

UNS N10675 Screwed Flange Testing And Certification

Every check is available on request. Hastelloy B3 Flanges supplier in Mumbai logs the results.

PMI Testing
Dye Penetrant
Ultrasonic (UT)
Hydrostatic Test
MTC 3.1 and 3.2
Chemical Analysis
Tensile Test
ASTM G28 Method A
Third Party Witness
Grain Size ASTM 5
14 · FAQs

Hastelloy B3 Flange FAQs

Five questions come with nearly every B3 enquiry. Answered plainly below.

Which standard covers ASTM B564 Hastelloy B3 Flanges?
  • ASME SB564 Hastelloy B3 Flanges is the matching code section.
  • Plate follows ASTM B333. Bar follows ASTM B335.
  • Code Case 2140 covers solution annealed Hastelloy N10675 Flanges.
What sizes, classes and facings do you hold in Hastelloy 2.4600 Flanges?
  • Half inch to 24 inch NB on ANSI B16.5 Hastelloy B3 Flanges dimensions.
  • Class 150 to 2500. Hastelloy B3 Raised Face Flanges are the default.
  • A Hastelloy B3 Flat Face Flange or RTJ groove is cut to order.
Can Hastelloy B3 Flanges handle hydrochloric acid?
  • Yes, at all concentrations and temperatures. That is why the grade exists.
  • Sulphuric, phosphoric, acetic and formic acid too.
  • Send your acid data. Your Hastelloy B3 Flanges Supplier confirms in writing.
Where must Hastelloy B3 Flanges never be used?
  • Oxidising media. The grade has no real chromium addition.
  • Ferric or cupric salts. They form when iron or copper enters an acid system.
  • Wet chlorine too. The limit binds every pattern, from a UNS N10675 Screwed Flange to an ANSI B16.5 Hastelloy B3 Expander Flange.
What documents ship with an ASTM B564 Hastelloy Alloy B3 Flange order?
  • EN 10204 3.1 certificate from your Hastelloy B3 Flanges Manufacturer in Mumbai, India.
  • Type 3.2 on request, with PMI and ultrasonic results when the order asks.
  • Invoice, packing list and COO from your Hastelloy B3 Flanges Exporter.
Inconel 601 Flanges - Why Buyers Trust Mortec Manufacturing Co
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Certifications and Credentials
Certified to PED 2014/68/EU for the manufacture of forged steel products
Stock, distribute and trade Steel Flanges, Nuts and Bolts, and precision-machined parts in Nickel Alloys, High Temperature Alloys and Super Alloys
Since 2012, exporting Oil and Gas piping items built to NACE MR0175 / ISO 15156 across the Egypt, Tunisia, Netherlands, Azerbaijan, South Africa, Algeria, Saudi Arabia and Morocco
Hold the largest import and stock inventory of bolting accessories, in both ferrous and non-ferrous metals, in India

Authorized Supplier For The Following Companies - Material At Reseller Price For Traders

Associated Companies - ADNOC, SABIC, Saudi Aramco, GASCO, ORPIC, KNPC, QATARGAS

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