Duplex & Super Duplex Round Bars – 2205 and 2507 to ASTM A479

Duplex Round Bar (2205, 2507) – Stockist, Supplier and Processor in Mumbai Since 1992

Duplex and super duplex round bar are machined into shafts, valve parts, fasteners and fittings that must combine high strength with resistance to chloride corrosion. As a stockist, supplier and processor in Mumbai since 1992, Ganesh Metals supplies duplex 2205 (UNS S31803 / S32205, W.Nr 1.4462) and super duplex 2507 (UNS S32750, W.Nr 1.4410) round bar to ASTM A479 / ASME SA479 and ASTM A276, and forgings and forged blanks to ASTM A182 F51, F60 and F53. Bars can be supplied in random lengths or cut to your lengths, each piece marked with its heat number and covered by an EN 10204 3.1 mill test certificate.

For duplex bar, tell us the grade, diameter, length, tolerance, specification and any impact or ferrite testing your project requires. A479 is normally specified for pressure-retaining parts, while A276 covers general bar. Machined parts may need slightly oversize bar; we will confirm availability and quote bars cut to the lengths you need.

Why Choose Duplex Bar?

Duplex and super duplex bar give machined parts high strength, good fatigue resistance and resistance to chloride stress-corrosion cracking and pitting. Their strength allows smaller sections than 316 bar in shafts, bolting and valve components.

Applications:

Duplex round bars are machined into shafts, stems and fasteners that see chlorides and high loads.

Oil & Gas: Valve stems, wellhead parts, fasteners and fittings in 2205 and 2507 for chloride service.
Marine: Propeller and pump shafts, bolting and fittings exposed to seawater and splash zones.
Chemical Processing: Agitator shafts, pump shafts and valve trims for chloride-bearing process media.
Heat Exchangers: Tie rods, studs and fasteners for seawater and brackish-water exchangers.
Pharma Equipment: Machined fittings and shafts where chloride cleaning would pit 316 stainless bar.

Duplex and super duplex are supplied as round bars, bright bars, other bar shapes on request, forgings and forged blanks, and bars cut to length. Sizes on request – send diameter, length and grade.

Duplex Bar: Specs, Sizes & Equivalents

Bars cut from longer lengths keep the original heat number by stamping or tagging, and PMI confirms the grade so that 2205 and 2507 bars cannot be mixed up. Quoted availability is valid for 2 days and is reconfirmed before your order is booked.

Duplex Bar: ASTM / ASME Specifications by Form

Round Bar: ASTM A479 / ASME SA479 and ASTM A276
Grades: UNS S31803 / S32205 (2205) and S32750 (2507). Bright, peeled or turned bar finishes on enquiry.
Forgings & forged blanks: ASTM A182 F51 (S31803), F60 (S32205) and F53 (S32750). Project specs on request.

Typical Duplex Bar Chemistry & Properties

Typical Mo: 2205 3.0–3.5%, 2507 3–5%
Typical: duplex bar is magnetic and much stronger than 316 bar; machining needs rigid set-ups and sharp tools.
Typical yield minimums (ASTM A479): 2205 about 450 MPa; super duplex 2507 about 550 MPa.

FAQ: Which spec should I order duplex bar to?

Usually ASTM A479 for pressure parts.
Q: Do you supply 2507 bar for seawater shafts? A: Yes, super duplex 2507 bar to A479 with an EN 10204 3.1 mill test certificate.
Q: Can duplex bar be cut to length? A: Yes, bars are cut to your lengths and every piece keeps its heat-number marking.

Duplex Bar Equivalent Grades & FAQ

Equivalents: 1.4462 · 1.4410 · F51 / F60 / F53
Q: Do you supply duplex forgings? A: Yes, forged blanks to A182 F51/F60/F53 can be quoted on enquiry.
Enquire for Duplex Bar: call +91 99872 73700 or email sales@ganeshmetals.com with form, size and quantity.

Certified Duplex Bar Supply

Every Duplex Bar order from Ganesh Metals ships with full documentation:

ISO 9001/14001/45001
MTC to EN 10204 3.1 with heat-number traceability
ASTM A479 / A276 / A182 compliance

Duplex Bar Forms We Supply

Round Bars
Bright Bar Stock
Other Bar Shapes
Billets
Forgings & Blanks
Bars Cut to Length

Why Ganesh Metals?

Stockist, supplier and processor in Mumbai since 1992
PMI-verified Duplex Bar with original mill markings
Sizes on request – send Duplex Bar form, size & quantity for a quote

GANESH METALS

NICKEL ALLOYS
➤ Inconel 600
➤ Inconel 601
➤ Inconel 625
➤ Inconel 690
➤ Inconel 718
➤ Inconel X-750
➤ Hastelloy C22
➤ Hastelloy C276
➤ Hastelloy B2
➤ Hastelloy B3
➤ Hastelloy C4

OTHER GRADES
➤ Monel 400
➤ Monel K500
➤ Monel R405
➤ Incoloy 800
➤ Incoloy 800H / 800HT
➤ Incoloy 825
➤ Incoloy 925
➤ Alloy 20
➤ Nickel 200 / 201
➤ Nimonic 80

GET IN TOUCH
Mahendra Prajapati
📍 Shop Number 12, Sant Sena Maharaj Marg,
2nd Kumbharwada, Mumbai – 400004
📞 +91 99872 73700
📧 sales@ganeshmetals.com
📧 ganeshmetal2372@gmail.com