• info@kanakratnasteelage.com
  • +(91)-9833663111
ASTM A276 / A479 UNS S32750 & S32760 Ex-Stock 3–600mm Dia, Saw-Cut To Length Super Duplex Bar Forged & Rolled In Mumbai For 25+ Years
Super Duplex Round Bars

Super Duplex Round Bar

StandardASTM A276, ASTM A479
Grade / UNSS32750 (SAF 2507), S32760 (Zeron 100)
Werkstoff Nr.1.4410, 1.4501
Cr24–26%
Alloy Type25Cr super duplex, ferritic-austenitic
Round Bar Dia.3 – 600 mm
Hex / SquareHex 3–180 mm, Square 2–200 mm
Flat Bar0.5–200 mm thick
Supply ConditionANN, H&T, PH
FinishNo.4, Bright, Rough Turned, Polished, Pickled, Black
MTCEN 10204 3.1
Standard Length0.5 – 6 m
Delivery5 – 30 Days Ex-Stock Worldwide
25 Chrome Duplex
Super-Duplex Chemistry
Cr 24–26%, Mo up to 5%.
550 MPa Yield
Minimum, Annealed
Above the 450 MPa of 2205 duplex.
PREN 40+
Chloride Pitting Duty
Built for seawater service.
3–600mm Dia
Ex-Stock Range
Saw-cut to your length.
900+ Buyers
Global Customer Base
Repeat orders across dealer markets.
15+ Markets
Global Dispatch Reach
Ex-Mumbai shipping to every region.
Super Duplex Round Bar
Mumbai Yard & Saw Desk

Supplier Of Cut to Size UNS S32750 and S32760 Hex Bars Stock in India

Fabricators needing chloride-proof Super Duplex Round Bar buy from our Mumbai yard. We stock super duplex stainless steel bar in UNS S32750 and S32760 grades. We supply super duplex steel round bar plus hex, square, flat, hollow forms. Share diameter and cut length, and our saw desk prepares it before dispatch. We PMI-check every heat, and each lot ships with EN 10204 3.1 certificate.

We offer super duplex 2507 round bar in Vellebruna and Kobe Steel origin. Kanakratna Steelage Pvt. Ltd. forges and rolls bar in two Mumbai units. Our process combines press, GFM, closed-die forging and bar rolling across both units. We carry ISO 9001:2015, AQSR-PED 2014/68/EU registrations and an active IEC for exports. We ship super duplex S32750 round bar to UAE, Germany, Nigeria, Singapore, USA. Our marine, offshore and process buyers trust Super Duplex Round Bar worldwide.

850+Tons/Yr Production Capacity
2+In-House Manufacturing Units
250+Skilled Workforce
4Forging Methods Used
01 · At A Glance
Our Strength As Super Duplex Round Bar Suppliers
850+ TonsYearly production capacity
20+ CountriesActive export dealer network
250+ EmployeesSkilled manufacturing workforce
NACE MR-01-75Sour-service qualified material
2+ UnitsIn-house manufacturing facilities
15+ MarketsServed across the globe
4 Forging MethodsPress, GFM, closed-die & rolling
EN 10204 3.1Mill test certificate as standard
Compliance & Capability

Certified, Equipped & Ready To Ship

ISO 9001:2015Cert. No. 22DQJH80
ISO 10002:2018Cert. No. ISO/CSCM/B1838
AQSR-PED 2014/68/EUCert. No. 16730
Importer-Exporter CodeIEC 0313008167
LEI Registered6488CR26Y9IM74U43J32
Forging Methods
  • Press & Hammer Forging
  • GFM Forging
  • Closed Die Forging
  • Ring & Bar Rolling
Factory Equipment
  • MCT Machine
  • Hydraulic Press Machine
  • Forging Machine
Services
  • Forging & Rolling
  • Metal Heat Treatment
  • Special Metals Testing
  • Cutting & Welding
Raw material is sourced from world-class mills including Sandvik, Haynes International, VDM Metals and Special Metals Corporation.
 

European Origin Alloy 2507 Rod and Flat Bar Stockist in Mumbai At Discounted Price

Specification

Super Duplex Round Bar Specification

Super Duplex Round Bars Manufacturer in India supplying every size to exact specification.

Size Range

  • Round: 6 mm to 500 mm dia
  • Hex & square: 6 mm to 100 mm
  • Flat: custom width and thickness

Length & Cutting

  • Random length: 3 to 6 metres
  • Cut length as per order
  • Saw desk cutting before dispatch

Tolerance

  • H8 to H13
  • K9 to K12

Shape

  • Round, square, hex
  • Rectangle, flat, hollow

Method

  • Forged
  • Rolled

Testing

  • PMI
  • Upset testing
  • Step-down tests

Inspection Reports

  • Third-party inspection
  • 100% radiography

Compliance On Request

  • NACE MR0175 / ISO 15156
  • PED 2014/68/EU

Marking

  • Nominal size
  • Material grade
  • Method of manufacture

Packing

  • Bubble wrap
  • Wooden boxes
  • Custom crating

Origin & Mill Brands

  • Indian, American, Japanese
  • European, Korean
  • Vellebruna, Kobe Steel

Super Duplex Round Bar Manufacturer In Mumbai – Forging & Rolling For 25+ Years

Share your size list and get bar, cutting and certificate priced in one quote.

Request Quote Now
Size Chart

DSS 2507 Rounds Sizes Chart

Super Duplex Round Bars Manufacturer in Mumbai offering every diameter in this chart.

Stock Range By Form
FormSize RangeStandard LengthAvailable Finish
Round Bar3 – 600 mm dia0.5 – 6 mBlack, Peeled, Ground, Polished
Hex Bar3 – 180 mm A/F0.5 – 6 mBlack, Bright, Drawn
Square Bar2 – 200 mm0.5 – 6 mBlack, Bright, Drawn
Flat Bar0.5 – 200 mm thick0.5 – 6 mCustom width, square-cut edges
Hollow BarOD / ID as per enquiry0.5 – 6 mRough turned, Honed
Popular Round Bar Diameters (mm)
6810121620253240506380100125150200250300Custom sizes on request
Tolerances

Super Duplex Bar Tolerances

Super Duplex Round Bars Supplier in India offering h8 to h13 tolerance grades.

ISO 286 Shaft Tolerance (h8 – h13)
Dia. Band (mm)h8h9h10h11h12h13
3 – 6−0.018−0.030−0.048−0.075−0.120−0.180
6 – 10−0.022−0.036−0.058−0.090−0.150−0.220
10 – 18−0.027−0.043−0.070−0.110−0.180−0.270
18 – 30−0.033−0.052−0.084−0.130−0.210−0.330
30 – 50−0.039−0.062−0.100−0.160−0.250−0.390
50 – 80−0.046−0.074−0.120−0.190−0.300−0.460
80 – 120−0.054−0.087−0.140−0.220−0.350−0.540
Finish Decides GradeGround / bright: h8–h11. Peeled / black: h12–h13
Straightness & LengthPer ASTM A484 or your drawing
K9 – K12 & OthersSpecial classes quoted on request

Exporting To: Middle East
OmanOman5 days QatarQatar6 days IraqIraq12 days LebanonLebanon14 days
 

Stock and Supply WNR 1.4410 Square and Hollow Bar With H&T, ANN State

Surface

SDSS Bar Surface Finishes & Condition Codes

Super Duplex Round Bars Stockist in India holding black, peeled, ground, polished finishes.

Black & Pickled

Surface levelMatte
HF – Hot finished HRAP – Hot rolled, annealed, pickled SRE – Slit rolled edge

Peeled & Turned

Surface levelSmooth
RT – Rough turned / peeled P&T – Peeled and turned ST – Smooth turned PR – Peeled and reeled

Ground & Polished

Surface levelMirror
CG – Centreless ground CD – Cold drawn BD – Bright drawn P – Polished

Exporting To: Gulf & Asia
UAEUAE5 days SingaporeSingapore8 days IndonesiaIndonesia9 days VietnamVietnam10 days ThailandThailand10 days PhilippinesPhilippines12 days
Weight Chart

ASTM A276 UNS S32760 Polished Bar Weight Chart

Theoretical weight per metre, size-wise, from Super Duplex Round Bars Stockist in Mumbai.

Weight Per Metre (kg / m)
Size (mm)Round BarHex BarSquare Bar
100.610.680.78
161.571.732.00
202.452.703.12
253.834.224.88
326.276.927.99
409.8010.8112.48
5015.3216.8919.50
6324.3126.8130.96
8039.2143.2349.92
10061.2667.5578.00
12595.72105.55121.88
150137.84151.99175.50

WNR 1.4410 Bar Exporter In India – Jebel Ali & Durban Port Shipments

Boxed lots leave Mumbai with origin papers and packing list ready for clearance.

Request Export Quote
Product Range

Super Duplex Round Bar Types In Stock

Super Duplex Round Bars Supplier in Mumbai stocking every bar type shown below.

Super Duplex SS Rod

Super Duplex SS Rod

  • Fastest-moving stock item
  • S32750 and S32760
ASTM A479 UNS S32750 Flat Bar

ASTM A479 UNS S32750 Flat Bar

  • 0.5 to 200 mm thick
  • Clean, square-cut edges
DIN 1.4410 Hex Bar

DIN 1.4410 Hex Bar

  • 3 to 180 mm
  • Valve and fastener blanks
Super Duplex Steel S32750 Square Bar

S32750 Square Bar

  • 2 to 200 mm
  • Machine-shop lengths
SDSS Rectangular Bar

SDSS Rectangular Bar

  • Custom width x thickness
  • Cut-to-size on request
Alloy 2507 Bright Bar

Alloy 2507 Bright Bar

  • Precision-machining ready
  • Bright, smooth surface
SAF 2507 Rounds

SAF 2507® Rounds

  • Ready yard stock
  • Sawn to length on order
Zeron 100 Shaft

Zeron® 100 Shaft

  • Pump and valve shafts
  • UNS S32760
25 Chrome Billet

25 Chrome Billet & Bloom

  • For re-forging and machining
  • Supplied with mill test certificate
Super Duplex 2507 Cold Drawn Bar

2507 Cold Drawn Bar

  • Tight OD tolerance
  • Higher strength finish
Super Duplex Hot Rolled Bars

Super Duplex Hot Rolled Bars

  • Economical large dia.
  • Black and pickled finish
Super Duplex Forged Bars

Super Duplex Forged Bars

  • Large sections by forging
  • Dense, refined grain
Buyer Focus · UAE

Sour-Gas & Subsea Hardware Buyers In UAE

Sour Duty NACE MR0175 / ISO 15156 on request
Parts Valve stems, shafts, manifold studs
Papers MTC 3.1 with every heat
Dispatch Jebel Ali, about 5 days
Composition

Super Duplex Stainless Steel Bar Chemical Composition

Super Duplex Round Bars Exporter shipping every heat with PMI-verified chemical composition worldwide.

Super Duplex 2507 (UNS S32750)

C0.030% maxCarbon
Mn1.20% maxManganese
Si0.80% maxSilicon
P0.035% maxPhosphorus
S0.020% maxSulphur
Cr24.0–26.0%Chromium
Ni6.0–8.0%Nickel
Mo3.0–5.0%Molybdenum
N0.24–0.32%Nitrogen
Cu0.50% maxCopper
FeBalanceIron

Zeron 100 (UNS S32760)

C0.030% maxCarbon
Mn1.00% maxManganese
Si1.00% maxSilicon
P0.030% maxPhosphorus
S0.010% maxSulphur
Cr24.0–26.0%Chromium
Ni6.0–8.0%Nickel
Mo3.0–4.0%Molybdenum
N0.20–0.30%Nitrogen
Cu0.50–1.00%Copper
W0.50–1.00%Tungsten
FeBalanceIron
Strength Data

SDSS Forged Bars Mechanical Properties

Tested mechanical strength data backed by Super Duplex Round Bars Supplier in Bangalore.

S32750 Tensile (min)800 MPa (116 ksi)
S32760 Tensile (min)750 MPa (109 ksi)
Yield 0.2% (min), both grades550 MPa (80 ksi)
S32750 Elongation (min)15%
S32760 Elongation (min)25%
Brinell Hardness (max)310 HBW

Exporting To: Europe
CyprusCyprus16 days Europe (general)Europe (general)19 days RussiaRussia22 days

Alloy 2507 Rod Stockist – Yard Stock Saw-Cut Within 2–5 Days

Send grade and diameter, and we confirm today’s floor stock.

Request Quote Now
Grade Choice

S32750 vs S32760 – Which Grade To Order?

Tensile Strength
S32750800 MPa minimum
S32760750 MPa minimum
Ductility
S3276025% elongation minimum
S3275015% elongation minimum
Alloying Difference
S32760Adds Cu 0.5–1.0% and W 0.5–1.0%
S32750Mo up to 5.0%, no W added
Trade Name
S32750SAF 2507, F53, 1.4410
S32760Zeron 100, F55, 1.4501
Cross-Reference

Super Duplex Stainless Steel Round Bar Equivalent Grades

Super Duplex 2507

  • UNS S32750
  • WNR 1.4410
  • EN X2CrNiMoN25-7-4

Zeron 100

  • UNS S32760
  • WNR 1.4501
  • EN X2CrNiMoCuWN25-7-4

Bar Specifications

  • ASTM A276
  • ASTM A479

Forged Grades

  • ASTM A182 F53 (S32750)
  • ASTM A182 F55 (S32760)

Trade Names

  • SAF 2507®
  • Zeron® 100
  • 25 Chrome Duplex

Exporting To: Europe & Africa
NetherlandsNetherlands8 days NigeriaNigeria9 days KenyaKenya19 days AustraliaAustralia20 days
Weight Calculation

Super Duplex Round Bar Weight Formula & Calculator

Theoretical weight at 7.80 g/cm³ density; dimensions in mm. Actual weight varies slightly with tolerance.

∅d
Round Bar
Weight per metre
dia² × 0.006126=kg / m
s
Hexagon Bar
Weight per metre
size² × 0.006755=kg / m
s
Square Bar
Weight per metre
size² × 0.0078=kg / m
Worked example50 mm round bar: 50² × 0.006126 = 15.32 kg per metre

Quick Reference – Round Bar kg / m

100.61mm dia
202.45mm dia
305.51mm dia
5015.32mm dia
8039.21mm dia
10061.26mm dia
-kg per metreRunning Weight
-kg per piecePiece Weight
-kg totalConsignment Weight
Buyer Focus · South Africa

Mine Dewatering & Slurry Pump Buyers In South Africa

Pump ShaftsPeeled and ground to h-tolerance
Acidic Mine WaterChloride-bearing dewatering duty
Workshop LengthsSawn to your machining sizes
DispatchSea freight to Durban, port-dependent
Quality Lab

Testing Done On Every Super Duplex Bar Lot

Super Duplex Round Bars Supplier in Vishakhapatnam offering PMI, ultrasonic and radiography testing.

In-House Quality ControlBar is tested before it is boxed
9Tests
3Test Groups
3.1MTC Papers
MechanicalStrength and ductility
01
Tensile TestYield, tensile and elongation against ASTM A276.
02
Hardness TestBrinell check against the 310 HBW ceiling.
03
Upset & Step-Down TestsConfirm forgeability and section soundness.
Non-DestructiveFlaw detection, bar stays intact
04
Ultrasonic TestFinds internal voids and inclusions.
05
Radiography100% radiography report on request.
06
Third-Party InspectionBuyer-appointed inspector welcome at our yard.
Chemistry & PhaseRight grade, right balance
07
PMI TestingConfirms Cr, Ni, Mo on every heat.
08
Spectro AnalysisFull chemistry against S32750 / S32760 limits.
09
Pitting & Ferrite CheckASTM G48 pitting and E562 ferrite count on request.
Buyer Focus · Kenya

Geothermal & Sugar-Mill Fabricators In Kenya

Geothermal LinesRound bar for turned fittings
Mill Rollers & ShaftsRounds cut to fabricator lengths
PaperworkMTC and packing list per lot
DispatchMombasa-bound sea freight, about 19 days
 
Offer Super Duplex Stainless Steel Forged Bars With Shearing and Heat Treatment Services
Heat Treatment

Alloy 2507 Rectangular Bar Heat Treatment

Super Duplex Round Bars Supplier in Pune delivered solution annealed and water quenched.

Solution Anneal CycleHeat, soak and quench to lock in the ferrite–austenite balance
1025°C+S32750 / F53
1100°C+S32760 / F55
WaterQuench
Sigma-phase zone 600–1000°C – cross it fast Temp Time Min. anneal temp 1. Heat 2. Soak 3. Quench Room temp
1

Heat & Soak

Furnace to the solution temperature, held until the full section is through-heated.

2

Rapid Quench

Water quench straight out of the furnace so the bar cools through 1000–600°C quickly.

3

Verify

Hardness, PMI and ferrite count (ASTM E562); G48 pitting test on request.

Buyer Focus · Canada

Offshore & Pulp-Mill Buyers In Canada

Offshore DutySeawater-wetted shafts and studs
Pulp & PaperChloride-bearing process parts
TestingPMI and radiography on request
DispatchSea freight via Atlantic and Pacific ports
Pricing

Super Duplex Round Bar Price Per Kg In India

Get per kg quotes ex-Mumbai from Super Duplex Round Bars Supplier in Hyderabad.

1
GradeS32750 or S32760, set by your specification
2
Diameter & FormRound, hex, square, flat or hollow
3
Finish & ToleranceBlack, peeled, ground or polished, H8 to H13
4
Testing LevelPMI, TPI and radiography add to the quote
5
Metal MarketNickel, chromium and molybdenum rates on the day

Exporting To: Africa
AlgeriaAlgeria17 days TanzaniaTanzania18 days TunisiaTunisia18 days
 
Buy SAF 2507® Shaft and Billet Ex.Stock Online For Construction and Shipbuilding Industry
Industries

Applications of Super Duplex Round Bar

Marine, oil, chemical plants buy from Super Duplex Round Bars Supplier in Secunderabad.

Oil & Gas
Subsea valve stemsManifold studsWellhead parts
Marine & Shipbuilding
Propeller shaftsSeawater pump shaftsFasteners
Desalination
Brine pump shaftsHigh-pressure pump partsValve trim
Chemical Processing
Agitator shaftsHeat-exchanger partsReactor fittings
Pulp & Construction
Digester partsStructural fastenersPump shafts
Exporting To: Oceania
New ZealandNew Zealand25 days

ASTM A479 UNS S32760 Supplier In Pune – NACE MR0175 Compliant On Request

Pune fabricators get certified bar cut to length with a certificate per heat.

Get Supplier Quote
Logistics

Delivery Estimate & Supply Network

Super Duplex Round Bars Supplier in Mangalore delivering ex-stock within promised dispatch windows.

Cut & BoxedReady 2 – 5 days after PO
Ocean Leg5 – 30 days by destination port
Urgent Air LotsSmall quantities, quoted per shipment
Final ETAStated on your quotation
Super Duplex Round Bar Delivery Cities (Call For Client List)
DubaiMuscatRas Al KhaimahRiyadhAl KhobarAbu DhabiSaudi ArabiaAjmanAl JubailArmeniaSharjahDohaFujairah
Also Serving Across India
MumbaiAhmedabadBengaluruChennaiPuneRajkotKolkataNagpurGhaziabadGujaratDelhi NCRHyderabadSecunderabadVisakhapatnamMangalore
Buyer Questions

Super Duplex Round Bar FAQs

Which sizes of Super Duplex round bar do you stock?

Round 3-600mm dia, hex 3-180mm, square 2-200mm, flat 0.5-200mm thick, lengths 0.5-6m, cut to size.

What decides the Super Duplex round bar price per kg in India?

Grade, diameter, finish, quantity, testing level and daily nickel, chromium and molybdenum rates.

What is the difference between UNS S32750 and S32760?

S32750 allows Mo 3.0-5.0% with 800 MPa minimum tensile. S32760 adds Cu and W, with 750 MPa tensile and 25% elongation.

Which standards apply to Super Duplex round bar?

ASTM A276 and A479 (UNS S32750, S32760, WNR 1.4410, 1.4501) with EN 10204 3.1 MTC; NACE MR0175 / ISO 15156 on request.

What is the minimum yield strength of annealed Super Duplex bar?

550 MPa (80 ksi) for both UNS S32750 and S32760 in the annealed condition.