As-Welded Corrosion Performance Proven On Hastelloy C4 Flanges Ready Stock ½″–24″, Class 150–2500, Bores Cut Sch 40 To XXS Titanium Stabilised Nickel Alloy Flange Maker Running In Mumbai Since 2012

Hastelloy C4 Flanges

Hastelloy C4 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#, 2500#
Grade & UNSASTM B564 / ASME SB-564, UNS N06455
Bore ScheduleSch 40, 80, 160 • XS and XXS Cut To Order
Delivery ConditionSolution Annealed & Rapidly Quenched
European DesignationW.Nr 2.4610, NiMo16Cr16Ti
Key AlloyingCr 14–18, Mo 14–17, Ti 0.70 max
FormsForged & CNC Machined
MTC CertificateEN 10204 3.1 and 3.2
OriginManufactured In Mumbai, India
Ti Stabilised
Weld Ready
Titanium ties up carbon so the weld edge stays sound
Dual Media
Oxidising Or Not
Chromium and molybdenum together cover both sides of the chemistry
Heat Traced
Billet To Box
One heat number follows the body from upsetting to packing
Sch 40–XXS
Bores Cut Here
Weld neck bores turned to whatever pipe wall you are joining
No Job Work
Taloja Shop
Press, furnace and lathe sit inside the same compound
Free Consult
Grade Bench
We compare C4, C22 and C276 against your process data first
Hastelloy C4 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

Alloy C4 Weld Neck Flange Manufacturer In India Forged For Schedule 40 To XXS

Hastelloy C4 Flanges hold their structure through the welding cycle without sensitising along heat-affected zones. Alloy C4 Slip On Flange chemistry locks carbon with titanium while silicon stays deliberately kept low. ASTM B564 UNS N06455 Blind Flange stock gets upset on our own Mumbai presses first. WNR 2.4610 Weld Neck Flange bodies go through solution annealing and rapid quenching before machining. Nickel Alloy C4 Socket Weld Flanges get verified through portable XRF chemistry readback on finished bodies. Hastelloy Alloy C4 Threaded Flange bores get cut to suit Schedule 40 through XXS thickness.

Nickel C4 Plate Flanges finish to ASME B16.5 and ASME B16.47 Series A and B. Alloy C-4 Orifice Flanges get cut following ASME B16.36 dimensional standards for orifice pairs. NiMo16Cr16Ti Long Neck Flanges follow ASME B16.48 requirements for line blank service applications. C4 Nickel Alloy Reducing Flange faces get turned to RF, FF or RTJ profiles. Nicrofer 6616 Lap Joint Flange release happens against EN 10204 3.1 or 3.2 certificates. C-4 Hastelloy Puddle Flanges ship with tensile, hardness and positive material identification reports attached.

01 · Specification

Hastelloy C4 Flange Specification

Ordered at the plant gate, complete with annealing charts, XRF readings and the original mill certificate.

Hastelloy C4 Flange Specification

 

Alloy C4 Flanges Face & Thread Options

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

Nickel C4 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 N06455 Product Form Standards

  • ASTM B574 rod, ASTM B575 plate
  • ASTM B622 and B619 pipe
  • ASTM B626 tube, ASTM B366 fittings

Hastelloy C4 Flange Compliance Sets

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

Matching Welding Consumables

  • ERNiCrMo-7 bare wire to AWS A5.14
  • ENiCrMo-7 electrodes to AWS A5.11

Nickel Alloy C4 Flange Marking

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

C4 Flange Supporting Material & Packing

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

Hastelloy C4 Flanges Raw Material Source

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

Hastelloy C4 Flanges Manufacturer In Mumbai – Press, Furnace And Lathe Running Since 2012

Give us the pipe wall and the class, and the bore is cut to fit first time.

Request Quote Now
02 · Range

Alloy C4 Slip On Flange Dimension & Bore Schedule

A Hastelloy C4 Flanges supplier in india offering ready inventory and custom in-house machining.

Popular Sizes 1½″ 3″ 6″ 12″ 16″

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 ScheduleSch 10, 40, 80, 160, XS, XXS

Full Dimensional Charts

Face diameter, bolt circle, hole count, hub run and body thickness for the class on your line list are sent as a PDF or Excel attachment with every quotation, taken directly from the ASME B16.5, B16.47 and EN 1092-1 tables. Tell us the pipe wall and the matching counterbore is added to the same sheet.

Request Dimension Chart

Sch 10S Thin Wall Bore
Sch 40 Standard Bore
Sch 80 Extra Strong Bore
Sch 160 Heavy Bore
XS Bore Profile
XXS Bore Profile
03 · Reference

ASTM B564 UNS N06455 Blind Flange Size Chart

As a Hastelloy C4 Flanges manufacturer in India, we supply popular Class 150 dimensions.

Popular Sizes - Class 150 RF Dimensions (mm)
NPSDNODBolt CircleBolt HolesBolt SizeThickness
1½″DN4012798.44⅝″17.5
3″DN80190.5152.44⅝″23.9
6″DN150279.4241.38¾″25.4
12″DN300482.6431.812⅞″31.8
16″DN400596.9539.8161″36.6
04 · Surface

WNR 2.4610 Weld Neck Flange Finishes

Groove profile and face roughness come off the lathe already matched to the gasket on your datasheet.

Concentric Serrated Face
Spiral Serrated Face
Smooth Machined Finish
RTJ Groove, R & RX Profile
Lapped / Mirror Face
Pickled & Passivated
Glass Bead Blasted
Bright Turned Bar Finish
05 · Rating

Nickel Alloy C4 Socket Weld Flanges Pressure Class Range

Every rung of the ASME ladder is turned here, open one to see the duty it usually carries.

150#Class 150

Scrubber ducting, absorber returns and vent headers where the media matters more than the pressure.

300#Class 300

The class most C4 enquiries land on, covering process reactors and pickling circuits.

600#Class 600

Where pump head and chloride content rise together on the same spool.

900#Class 900

Thicker hub for acid regeneration plant and pressurised sour service manifolds.

1500#Class 1500

Specified on autoclave connections and high-pressure chemical injection points.

2500#Class 2500

The heaviest body we machine in C4, reserved for pilot plant and test loop work.

06 · Product Range

Hastelloy C4 Flange Types

Your trusted Hastelloy C4 Flanges supplier in mumbai manufacturing all standard forged flange types.

WNR 2.4610 Weld Neck Flange

WNR 2.4610 Weld Neck Flange

ASME B16.5 • Sch 40–XXS Bore
  • Counterbore turned to your pipe wall
  • Tapered hub keeps the butt weld clean
Alloy C4 Slip On Flange

Alloy C4 Slip On Flange

ASME B16.5 • Class 150–600
  • Drops over the pipe, welded inside and out
  • Fastest option when alignment is tight
ASTM B564 UNS N06455 Blind Flange

ASTM B564 UNS N06455 Blind Flange

ASME B16.5 • All Classes
  • One solid disc, nothing to bore
  • Caps spare nozzles and future tie-ins
Nickel Alloy C4 Socket Weld Flanges

Nickel Alloy C4 Socket Weld Flanges

ASME B16.5 • ≤4″ NB
  • Recess seats the pipe before welding
  • Common on small-bore chemical dosing
Hastelloy Alloy C4 Threaded Flange

Hastelloy Alloy C4 Threaded Flange

ASME B16.5 • ≤4″ NB
  • NPT or BSPT cut, no hot work on site
  • Used on skids and sample points
Nicrofer 6616 Lap Joint Flange

Nicrofer® 6616 Lap Joint Flange

ASME B16.5 • With Stub End
  • Ring rotates freely to line up bolts
  • Backing ring can be a cheaper grade

Source ASTM B564 UNS N06455 Slip On Flange Rated For Continuous Service Up To 815 Degrees C

07 · Composition

UNS N06455 Flange Chemical Composition

Titanium plus a tight silicon and carbon ceiling is what separates this chemistry from the rest of the C family.

Chemical Composition - ASTM B564 UNS N06455 (% by weight)
NiBalanceNickel
Cr14.0–18.0Chromium
Mo14.0–17.0Molybdenum
Fe3.00 maxIron
Co2.00 maxCobalt
Ti0.70 maxTitanium
Mn1.00 maxManganese
Si0.08 maxSilicon
C0.015 maxCarbon
P0.040 maxPhosphorus
S0.030 maxSulphur
08 · Strength Data

Nickel C4 Plate Flanges Mechanical Properties

Minimum room-temperature figures the standard demands in the solution annealed condition.

Tensile Strength690 MPa (100 ksi) min
Yield Strength (0.2%)276 MPa (40 ksi) min
Elongation In 2″40% min
Condition SuppliedSolution Annealed
Physical Properties - Hastelloy C4 (UNS N06455)
Density8.64 g/cm³ (0.312 lb/in³) - budget the extra kilos when you cost the freight.
Melting RangeApproximately 1350–1400 °C (2460–2550 °F) - well outside any wetted flange duty.
Modulus Of ElasticityAround 211 GPa (30.6 × 10&sup6; psi) at room temperature.
Thermal ExpansionAbout 10.8 µm/m·°C over 25–100 °C - useful when you set the bolt torque.
09 · Cross-Reference

Nicrofer 6616 Lap Joint Flange Material Equivalent

Same chemistry, several registered names - buy against whichever line your specification prints.

USAASTM / ASME (USA)

  • UNS N06455
  • ASTM B564 / ASME SB-564 (Forgings)
  • ASTM B574 (Rod & Bar)
  • ASTM B575 (Plate, Sheet & Strip)

GermanyDIN / W.Nr (Germany)

  • Werkstoff 2.4610
  • NiMo16Cr16Ti

Trade NamesRegistered Trade Names

  • HASTELLOY® C-4 alloy
  • Nicrofer® 6616 hMoT
  • Alloy C-4

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 B626 (Welded Tube)
  • ASTM B366 (Wrought Fittings)

Related GradesNeighbouring C-Family Grades

  • Hastelloy C-276 – UNS N10276
  • Hastelloy C-22 – UNS N06022
  • Hastelloy C-2000 – UNS N06200
10 · Customs

Hastelloy Alloy C4 Threaded Flange HSN Code & Export Documents

HSN Code 7507 20 00Sits in Chapter 75, covering nickel and nickel alloy tube or pipe fittings including flanges.
Domestic GST 18%Levied on Indian billing only; overseas orders invoice zero-rated against our LUT.
Certificate Of OriginCut per shipment and chamber-attested if the arrival customs office insists on it.
Document PackInvoice, packing list, MTC, XRF printout and bill of lading travel as a single file.

Alloy C4 Slip On Flange Exporter In India To Jebel Ali & Hamriyah

Annealed bodies crated with vendor-approval paperwork your UAE contractor already accepts.

Request Export Quote
11 · Weld Zone

Alloy C-4 Orifice Flanges Thermal Stability & As-Welded Behaviour

This is the reason the grade exists, and the reason fabricators pay a premium for it.

What The Titanium Does

  • Ties up carbon before chromium carbides can form
  • Grain boundaries stay clean through the weld cycle
  • Silicon and iron held low for the same reason

Fabricating Without Re-Annealing

  • Corrosion performance survives the as-welded state
  • No solution treatment step to schedule on site
  • Field repairs handled without furnace access

The Failure It Avoids

  • Attack running as a line beside the fusion boundary
  • Ductility loss from intermetallic phase build-up
  • Both traced to precipitation during thermal exposure

Welding Practice We Recommend

  • ERNiCrMo-7 wire or ENiCrMo-7 electrodes
  • Stringer beads, controlled interpass, no preheat
  • Joint faces degreased and free of marking ink
12 · Grade Choice

C4 Nickel Alloy Reducing Flange Versus C22 And C276 Selection

The three grades read alike on a datasheet and behave differently on a job; here is the short version.

Hastelloy C-4 (N06455)

  • Chemistry: Titanium stabilised, no tungsten addition
  • Strong Point: Structure holds after thermal exposure
  • Pick It When: Heavy welding and no post-weld furnace
  • Iron Content: Lowest of the three, 3 percent ceiling

Hastelloy C-276 (N10276)

  • Chemistry: Tungsten bearing, higher iron allowance
  • Strong Point: Broadest track record in mixed media
  • Pick It When: The spec names it and stock is the issue
  • Iron Content: Noticeably higher than grade C-4

When To Step Up To C-22Higher chromium suits wet chlorine, hypochlorite and strongly oxidising bleach circuits.
When To Step Up To C-2000Copper bearing chemistry adds ground in sulphuric acid where C-4 runs marginal.
When C-4 Is Over-SpecifiedIf the line never sees heat and chlorides are mild, a 6Mo austenitic may do.
Send The Process DataMedia, concentration, temperature and weld map, and we will put the comparison in writing.
13 · Inspection

NiMo16Cr16Ti Long Neck Flanges Testing & Inspection Scope

Top Hastelloy C4 Flanges exporter defining test parameters early to eliminate shipping gate arguments.

Positive Material IdentificationXRF or optical emission per heat, with chromium and molybdenum readings on the file.
Intergranular Corrosion TestASTM G28 Method A on request, the accepted check for wrought chromium bearing nickel alloys.
Ultrasonic TestingBlanks scanned straight and angle beam, with the acceptance level written into the order.
Liquid Penetrant TestingSeal faces, grooves and hub fillets dye-checked following ASTM E165 practice.
Mechanical TestingTensile to ASTM E8/E8M and hardness to ASTM E18, both taken after annealing.
Grain Size & MicrostructureReported against ASTM E112 whenever your purchase specification asks for a figure.
Third-Party InspectionSGS, Bureau Veritas, TUV, Lloyd's or IRS attendance booked and run from our side.
CertificationEN 10204 3.1 by default, 3.2 countersigned by the inspector you nominate.
14 · Destination Rules

C-4 Hastelloy Puddle Flanges Country Compliance Documents

Each market wants a different file, ours is assembled while the lot is still being machined.

South AfricaSouth Africa

  • Durban and Richards Bay routings quoted
  • Test reports mapped to the SANS clause you cite
  • Consignee VAT and tariff heading on the invoice

UAEUnited Arab Emirates

  • Jebel Ali, Hamriyah and Khalifa discharge
  • Vendor registration files built for EPC review
  • Billet heat number readable on every body

KenyaKenya

  • KEBS PVoC inspection lined up before stuffing
  • Certificate of Conformity closed prior to sailing
  • Mombasa entry against the IDF number you supply

CanadaCanada

  • CRN registration paperwork under CSA B51
  • Submission packs laid out for ABSA and TSSA
  • Delivered into Montreal, Toronto and Vancouver
15 · Industries

Nickel Chromium Molybdenum C4 Flange Applications & Industries

The plants that specify this grade, and the duty that puts it on their line list.

Chemical Process Plant
Flue Gas Desulphurisation
Pickling & Acid Regeneration
Pulp & Paper Bleaching
Pharmaceutical & Fine Chemicals
Waste Incineration Scrubbers
Sour Gas & Wellhead Service
Fertiliser & Phosphoric Acid
Global Reach

Hastelloy C4 Flanges Stocked & Dispatched Worldwide

Rack stock and mill-order production leaving Mumbai for buyers across these markets.

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 N06455 Flange Supplier In Pune – ASTM G28 Test Reports On Request

Corrosion coupons and countersigned certificates are closed out before the truck is loaded.

Get Supplier Quote
Logistics

Alloy C4 Weld Neck Flange Delivery Estimate

Working windows that apply once size, class, facing and bore schedule are signed off on the order.

Ex-Stock Dispatch

  • Rack sizes are marked, boxed and released within 3 to 5 working days

Sea Freight

  • Around 18 to 38 days afloat depending on the discharge terminal

Air Freight

  • 3 to 7 days whenever a plant outage refuses to wait for a vessel

Country-Specific ETA

  • Your destination schedule goes out attached to the proforma invoice
FAQs

Hastelloy C4 Flanges FAQs

The questions that come back to our desk before a C4 order is released.

How does WNR 2.4610 differ from grade C276 flange?

C4 carries titanium and no tungsten, giving steadier structure after welding.

What elements make up Nickel C4 flanges?

Nickel balance with chromium 14 to 18, molybdenum 14 to 17, titanium added.

Can Alloy C-4 Orifice Flanges be used straight from welding?

Yes. The grade was designed to resist heat affected zone precipitation as-welded.

What bore schedules suit NiMo16Cr16Ti flanges?

Schedule 40 through XXS, bored to suit the pipe end you nominate.

Do you export C-4 Hastelloy flanges?

Yes. PVoC handling, CRN dossiers and Mombasa or Montreal routings are arranged.

Hastelloy C4 Flanges - Built On Trust With Mortec
Titanium stabiliser keeps the weld zone free of carbides
C4 blanks racked as WNRF, SORF and blind bodies
Every Hastelloy C4 flange leaves with XRF and tensile data
Counterbores cut Sch 40 through XXS to your drawing

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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