Solution Annealed Hastelloy B2 Flanges Made Under ISO 9001:2015 Control Ready Stock ½″–24″, Class 150–1500, PMI Report Every Heat Nickel Molybdenum Flange Manufacturer Working From Mumbai Since 2012

Hastelloy B2 Flanges

Hastelloy B2 Flanges Summary

Sizes In StockNPS ½″ to 24″ • to 60″ on order
Delivery TimeEx-Stock: 3–5 Days • Mill-Order: 6–8 Wks
Class Range150#, 300#, 600#, 900#, 1500#
Grade & UNSASTM B564 / ASME SB-564, UNS N10665
Delivery ConditionSolution Annealed & Rapidly Quenched
European DesignationW.Nr 2.4617, NiMo28
Key AlloyingMo 26–30, Ni Balance, Fe 2.0 max
FormsForged & CNC Machined
MTC CertificateEN 10204 3.1 and 3.2
OriginManufactured In Mumbai, India
26–30% Mo
Alloying Core
Molybdenum carries the whole reducing-acid performance of the grade
HCl Duty
All Strengths
Handles hydrochloric acid to its boiling point when oxidisers are absent
PMI Verified
Every Heat
Portable XRF confirms the molybdenum band before any lot ships
Ready Stock
Class 150–1500
Common bores held as annealed forged blanks awaiting your facing
One Roof
Mumbai Works
Upsetting, annealing and turning done without any outside job work
Free Consult
Acid Desk
We check your oxidiser levels before confirming B2 is the right pick
Hastelloy B2 Flanges

 

at glance

Mortec At A Glance

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 • GCC, Africa & APAC

Testing Offered

Tensile, hardness & PMI • MTC EN 10204 3.1

Shipment Documents

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

Reliable Alloy B2 Slip On Flange Manufacturer In India Available In Class 150 To 1500

Hastelloy B2 Flanges get produced from heat-numbered stock upset on our own Mumbai presses. Alloy B2 Slip On Flange bodies stay solution annealed and rapid quenched to retain molybdenum. ASTM B564 UNS N10665 Blind Flange faces finish to ASME B16.5 and B16.47 standards. WNR 2.4617 Weld Neck Flange stock stays serviceable specifically against aggressive hydrochloric acid service conditions. Nickel Alloy B2 Socket Weld Flanges get verified through portable XRF molybdenum band testing checks.

Hastelloy Alloy B2 Threaded Flange release happens against EN 10204 3.1 or 3.2 certificates. Nimofer 6928 Orifice Flanges get cut following ASME B16.36 dimensional standards for orifice sets. ASME SB564 Alloy B2 Reducing Flange bodies come tagged with tensile, hardness and PMI reports. B2 Hastelloy Long Neck Flanges ship same-day ex-Mumbai once bore and class are confirmed. B2 Nickel Alloy Lap Joint Flange availability covers Weld Neck, Slip-On, Blind and Socket Weld classes.

01 · Specification

Hastelloy B2 Flange Specification

Bought at the forge gate, with annealing charts, PMI printouts and original mill certificates.

Hastelloy B2 Flange Specification

 

Alloy B2 Flanges Face & Thread Options

  • RF, FF, RTJ facing
  • NPT, BSPT, BSPP thread

Nickel B2 Flange Dimensional Standards

  • ASME B16.5, B16.47 Series A & B
  • ASME B16.36, B16.48, MSS SP-44
  • EN 1092-1, JIS B2220

UNS N10665 Product Form Standards

  • ASTM B335 rod, ASTM B333 plate
  • ASTM B622 and B619 pipe
  • ASTM B366 wrought fittings

Hastelloy B2 Flange Compliance Sets

  • NACE MR0175 / ISO 15156 on request
  • PED 2014/68/EU documentation

Matching Welding Consumables

  • ERNiMo-7 bare wire to AWS A5.14
  • ENiMo-7 electrodes to AWS A5.11

Nickel Alloy B2 Flange Marking

  • Heat number, grade, size, class stamped
  • Marking practice to MSS SP-25

B2 Flange Supporting Material & Packing

  • Ring joints, stud bolts, spiral gaskets
  • VCI wrap in fumigated wooden cases

Hastelloy B2 Flanges Raw Material Source

  • Vacuum remelted bar and billet only
  • Heat-to-flange traceability retained

Hastelloy B2 Flanges Manufacturer In Mumbai – Forging And Annealing In-House Since 2012

Share your line size, class and media, and a costed offer follows within hours.

Request Quote Now
02 · Range

Alloy B2 Slip On Flange Dimension

Popular Sizes ½″ 1″ 2″ 4″ 8″

Available Sizes

Nominal Bore½″ NB (B16.5) – 60″ NB (B16.47)
DN RangeDN 15 – DN 1500
PN RangePN 6 – PN 100 (EN 1092-1)
Bore TypeStandard, counter or custom bore

Full Dimensional Charts

Flange outside diameter, bolt circle, hub run-out, hole count and body thickness for whichever class you nominate go out as a PDF or Excel attachment with the quotation, lifted straight from the ASME B16.5, B16.47 and EN 1092-1 tables.

Request Dimension Chart
03 · Reference

ASTM B564 UNS N10665 Blind Flange Size Chart

A Hastelloy B2 Flanges manufacturer in India supplying popular ASME B16.5 Class 150 figures.

Popular Sizes - Class 150 RF Dimensions (mm)
NPSDNODBolt CircleBolt HolesBolt SizeThickness
½″DN1588.960.54½″11.2
1″DN2510879.44½″14.2
2″DN50152.4120.74⅝″19.1
4″DN100228.6190.58⅝″23.9
8″DN200342.9298.58¾″28.4
04 · Surface

WNR 2.4617 Weld Neck Flange Finishes

Serration pitch and surface roughness are turned to match the gasket your process licensor specified.

Concentric Serrated Face
Spiral Serrated Face
Smooth Machined Finish
RTJ Groove, R & RX Profile
Lapped / Mirror Face
Acid Pickled Finish
Shot-Blasted Matt
Bright Turned Bar Finish
05 · Rating

Nickel Alloy B2 Socket Weld Flanges Pressure Class Range

Bodies are turned across the ASME class ladder from 150 to 1500; open a class to see where it usually lands.

150#Class 150

Light bodies for acid storage headers, scrubber returns and low-pressure transfer lines.

300#Class 300

The workhorse class on hydrochloric acid reactors, absorbers and pump discharge spools.

600#Class 600

Picked when acid concentration and pump head both climb on the same circuit.

900#Class 900

Heavier hub for catalyst recovery loops and pressurised solvent stripping duty.

1500#Class 1500

The top class we cut in B2, used on pilot reactors and high-pressure acid rigs.

06 · Product Range

Hastelloy B2 Flange Types

Trust a premier Hastelloy B2 Flanges supplier in India for quick raised-face dispatch.

Alloy B2 Slip On Flange

Alloy B2 Slip On Flange

ASME B16.5 • Class 150–600
  • Slips over the pipe, welded both sides
  • Quickest fit-up on acid transfer lines
ASTM B564 UNS N10665 Blind Flange

ASTM B564 UNS N10665 Blind Flange

ASME B16.5 • All Classes
  • Solid disc with no bore to machine
  • Shuts off spare reactor nozzles
WNR 2.4617 Weld Neck Flange

WNR 2.4617 Weld Neck Flange

ASME B16.5 • ½″–24″
  • Tapered hub moves the weld off the face
  • Preferred where acid velocity is high
Nickel Alloy B2 Socket Weld Flanges

Nickel Alloy B2 Socket Weld Flanges

ASME B16.5 • ≤4″ NB
  • Counterbore locates the pipe end
  • Common on small-bore dosing lines
Hastelloy Alloy B2 Threaded Flange

Hastelloy Alloy B2 Threaded Flange

ASME B16.5 • ≤4″ NB
  • NPT or BSPT bore, no hot work needed
  • Suits skids and sampling stations
B2 Nickel Alloy Lap Joint Flange

B2 Nickel Alloy Lap Joint Flange

ASME B16.5 • With Stub End
  • Backing ring spins for bolt alignment
  • Handy where spools come apart often

Source ASTM B564 UNS N10665 Blind Flange Priced Per Kg At Ex-Works Rate

07 · Composition

UNS N10665 Flange Chemical Composition

Heavy molybdenum with chromium and iron held down is what makes this a reducing-acid grade.

Chemical Composition - ASTM B564 UNS N10665 (% by weight)
NiBalanceNickel
Mo26.0–30.0Molybdenum
Fe2.00 maxIron
Cr1.00 maxChromium
Co1.00 maxCobalt
Mn1.00 maxManganese
Si0.10 maxSilicon
C0.02 maxCarbon
P0.040 maxPhosphorus
S0.030 maxSulphur
08 · Strength Data

Nickel B2 Plate Flanges Mechanical Properties

As a Hastelloy B2 Flanges exporter, we guarantee standard room-temperature solution annealed values.

Tensile Strength760 MPa (110 ksi) min
Yield Strength (0.2%)350 MPa (51 ksi) min
Elongation In 2″40% min
Condition SuppliedSolution Annealed
Physical Properties - Hastelloy B2 (UNS N10665)
Density9.24 g/cm³ (0.334 lb/in³) - noticeably heavier than stainless, so allow for it on freight.
Melting RangeApproximately 1330–1380 °C (2425–2515 °F) - far above any wetted flange duty.
Modulus Of ElasticityAround 217 GPa (31.5 × 10&sup6; psi) at room temperature.
Thermal ExpansionAbout 10.3 µm/m·°C over 25–100 °C - lower than austenitic stainless, useful for bolt load.
09 · Cross-Reference

Nimofer 6928 Orifice Flanges Material Equivalent

One nickel molybdenum chemistry, several registered names - order against whichever your specification prints.

USAASTM / ASME (USA)

  • UNS N10665
  • ASTM B564 / ASME SB-564 (Forgings)
  • ASTM B335 (Rod & Bar)
  • ASTM B333 (Plate, Sheet & Strip)

GermanyDIN / W.Nr (Germany)

  • Werkstoff 2.4617
  • NiMo28

Trade NamesRegistered Trade Names

  • HASTELLOY® B-2 alloy
  • Nimofer® 6928
  • Alloy B-2

EuropeFlange Dimensional Codes

  • ASME B16.5 / B16.47 A & B
  • ASME B16.36 / B16.48
  • EN 1092-1 (PN 6–PN 100)
  • MSS SP-44

Pipe and Fitting StandardsMatching Pipe & Fitting Specs

  • ASTM B622 (Seamless Pipe & Tube)
  • ASTM B619 (Welded Pipe)
  • ASTM B366 (Wrought Fittings)

Related GradesRelated Nickel Molybdenum Grades

  • Hastelloy B-3 – UNS N10675
  • Hastelloy B – UNS N10001
  • Hastelloy C-276 – UNS N10276
10 · Customs

Hastelloy Alloy B2 Threaded Flange HSN Code & Export Documents

HSN Code 7507 20 00Falls under Chapter 75 - nickel and nickel alloy tube or pipe fittings, flanges included.
Domestic GST 18%Applied on Indian billing; shipments abroad go zero-rated against our LUT.
Certificate Of OriginIssued shipment-wise and chamber-attested wherever the destination customs insist.
Document PackInvoice, packing list, MTC, PMI printout and bill of lading move together as one file.

Alloy B2 Slip On Flange Exporter In India To Durban & Richards Bay

Annealed, PMI-cleared bodies packed with paperwork your South African broker can file directly.

Request Export Quote
11 · Corrosion Duty

ASME SB564 Alloy B2 Reducing Flange Acid Service Guide

Grade B2 was built for reducing media, the deciding question is always what oxidiser sits in the stream.

Hydrochloric Acid, All StrengthsExcellent, to boiling
Sulphuric, Acetic, Formic AcidStrong across wide bands
Dry Hydrogen Chloride GasWell proven service
Ferric, Cupric Or Nitric PresenceNot suitable

Where B2 WinsHydrochloric acid reactors, acid recovery columns, alkylation and catalyst handling lines running free of oxidisers.
The Contamination TrapEven trace ferric or cupric ion pick-up from upstream carbon steel sharply raises the corrosion rate.
Keep It Away FromNitric acid, hypochlorite, aerated brines and any oxidising salt - only about one percent chromium is present.
Send Us The Stream DataShare concentration, temperature and contaminant list and our desk confirms B2 or points you to C-276.

Hastelloy B2 (N10665)

  • Family: Nickel molybdenum, chromium under one percent
  • Best At: Reducing acids, hydrochloric duty in particular
  • Typical Use: Acid reactors, recovery loops, HCl transfer
  • Watch: Oxidising contaminants must be ruled out first

Hastelloy C-276 (N10276)

  • Family: Nickel chromium molybdenum with tungsten
  • Best At: Mixed oxidising and reducing conditions
  • Typical Use: Scrubbers, chlorides, flue gas, mixed acid
  • Watch: Gives up ground to B2 in hot pure hydrochloric acid
12 · Fabrication

B2 Hastelloy Long Neck Flanges Welding & Knife-Line Attack Control

Most field failures on this grade start at the weld edge, not in the middle of the flange body.

Matching Filler Metals

  • ERNiMo-7 bare rod and wire, AWS A5.14
  • ENiMo-7 covered electrodes, AWS A5.11
  • Supplied alongside the flanges on request

Heat Input Discipline

  • Stringer beads, no weaving, no preheat needed
  • Interpass temperature kept deliberately low
  • Clean, oil-free and marker-free joint faces

Why Knife-Line Attack Happens

  • Precipitation in the heat affected zone after welding
  • Corrosion then runs as a narrow line beside the bead
  • Grade B-3 was later developed to reduce this tendency

Post-Weld Solution Anneal

  • Restores the annealed structure across the weld zone
  • Held near 1065 °C then rapidly quenched
  • Exact cycle and furnace chart agreed at order stage
13 · Inspection

B2 Nickel Alloy Lap Joint Flange PMI, NDT & Inspection

On a grade this expensive, buyers pay for proof of chemistry as much as for the metal itself.

Positive Material IdentificationPortable XRF or optical emission on every heat, with the molybdenum reading printed on the file.
Ultrasonic TestingStraight and angle beam scan of the forged blank, acceptance level fixed when the order opens.
Liquid Penetrant TestingSealing faces, groove profiles and the hub fillet are dye-checked following ASTM E165.
Mechanical TestingTensile to ASTM E8/E8M and hardness to ASTM E18 taken after final solution annealing.
Grain Size & MicrostructureReported to ASTM E112 wherever the purchase specification asks for a figure.
Corrosion Test PracticeAgreed case by case, since ferric-based intergranular methods do not suit a nickel molybdenum grade.
Third-Party InspectionSGS, Bureau Veritas, TUV, Lloyd's or IRS witness booked and coordinated from our side.
CertificationEN 10204 3.1 as standard, 3.2 countersigned by your nominated inspector when asked.
14 · Destination Rules

DIN 2.4617 Puddle Flanges Country Compliance Documents

Destination paperwork is built while the lot is still on the machine, not after the container is sealed.

South AfricaSouth Africa

  • Discharge at Durban or Richards Bay
  • Certificates cross-referenced to SANS-quoted specs
  • Importer VAT and tariff code printed on invoice

UAEUnited Arab Emirates

  • Jebel Ali, Khalifa and Hamriyah discharge
  • Vendor registration dossiers for EPC contractors
  • Heat number traceable back to the original billet

KenyaKenya

  • KEBS PVoC inspection booked before loading
  • Certificate of Conformity in hand prior to sailing
  • Mombasa clearance quoting your IDF reference

CanadaCanada

  • CRN registration support under CSA B51
  • Data packs laid out for ABSA and TSSA review
  • Delivery into Montreal, Toronto and Vancouver
15 · Industries

Nickel Molybdenum B2 Flange Applications & Industries

The plants that put this grade on a flange line, and the duty that puts it there.

Hydrochloric Acid Plants
Sulphuric Acid Handling
Acetic & Formic Acid Units
Pharmaceutical & API Reactors
Agrochemical & Pesticide Plants
Petrochemical Alkylation
Catalyst & Solvent Recovery
Magnesium Chloride Processing
Global Reach

Hastelloy B2 Flanges Stocked & Dispatched Worldwide

Annealed stock and mill-order production leaving Mumbai for buyers in these markets and beyond.

Export Markets
UAEUAE
TurkeyTurkey
CanadaCanada
UKUK
Saudi ArabiaSaudi Arabia
SingaporeSingapore
USAUSA
MexicoMexico
ThailandThailand
ItalyItaly
NetherlandsNetherlands
GermanyGermany
PhilippinesPhilippines
MalaysiaMalaysia
UgandaUganda
IndonesiaIndonesia
South AfricaSouth Africa
VietnamVietnam
VenezuelaVenezuela
Domestic Supply
MumbaiMumbai
AhmedabadAhmedabad
BengaluruBengaluru
ChennaiChennai
PunePune
GhaziabadGhaziabad
GujaratGujarat
DelhiDelhi
RajkotRajkot
KolkataKolkata

ASTM B564 UNS N10665 Flange Supplier In Ahmedabad – NACE MR0175 Compliance Available

Witnessed testing and countersigned certificates are closed out before the lot leaves the yard.

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Logistics

Alloy B2 Slip On Flange Delivery Estimate

Typical despatch windows once bore, class, facing and drilling pattern are frozen on the purchase order.

Ex-Stock Dispatch

  • Held classes are packed and gate-passed inside 3 to 5 working days

Sea Freight

  • Roughly 18 to 38 days on the water sailing from Nhava Sheva

Air Freight

  • 3 to 7 days when a shutdown window simply cannot be missed

Country-Specific ETA

  • A port-wise schedule is attached to the proforma before payment is released
FAQs

Hastelloy B2 Flanges FAQs

What buyers ask our desk before they release a B2 order.

What alloying elements are in ASTM B564 UNS N10665 flanges?

Nickel balance with molybdenum 26 to 30 percent, chromium and iron deliberately kept low.

Where are Hastelloy Alloy B2 threaded flanges used?

Reducing acid duty such as hydrochloric, sulphuric and acetic service without oxidising contaminants.

Are Nickel B2 plate flanges harder than stainless steel?

Annealed hardness is comparable; alloy B2 wins on reducing acid corrosion, not hardness.

Is a DIN 2.4617 puddle flange the same as Inconel?

No. Inconel grades are nickel chromium; B2 is a nickel molybdenum alloy.

Do you export B2 Hastelloy long neck flanges?

Yes. KEBS PVoC handling, CRN dossier support and Durban or Mombasa shipments arranged.

Hastelloy B2 Flanges - Built On Trust With Mortec
Molybdenum held at 26 to 30 percent on every heat
Annealed B2 blanks stocked as SORF, BLRF and long neck
Each Hastelloy B2 flange carries PMI and tensile results
Non-standard drilling and DIN pattern faces machined on request

Materials


Standard


Products

Certifications & 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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