Duplex & Super Duplex Sheets & Plates – 2205 and 2507 to ASTM A240

Duplex Sheet & Plate (2205, 2507) – Stockist, Supplier and Processor in Mumbai Since 1992

Duplex and super duplex sheet and plate are used to build lighter, stronger and more chloride-resistant vessels, tanks and structures than 316L allows. 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) plate, sheet, strip and coil to ASTM A240 / ASME SA240. Hot-rolled plate and cold-rolled sheet are available, and plate can be cut into pieces, rings, discs and circles to your drawing. Every plate and cut piece keeps its heat number and is covered by an EN 10204 3.1 mill test certificate.

Duplex plate is harder and stronger than austenitic stainless, so cutting, forming and welding need suitable methods. Tell us the grade, thickness, width, length and any project requirements such as impact testing or ferrite measurement. We confirm availability and whether pieces can be cut from stock plate to reduce your cost and scrap.

Why Choose Duplex Plate?

Duplex and super duplex flat products give about twice the yield strength of 316L sheet, with far better resistance to chloride stress-corrosion cracking and pitting. That strength often allows thinner plate, reducing the weight and cost of tanks, vessels and supports.

Applications:

Duplex sheet and plate build tanks, vessels and structures that face chlorides and need high strength.

Chemical Processing: Storage tanks, reaction vessels and process equipment in 2205 plate for chloride media.
Marine: Seawater tanks, deck structures and splash-zone parts in 2205 and 2507 plate.
Heat Exchangers: Tube sheets, shells and baffles cut from duplex plate for brackish cooling water.
Oil & Gas: Separator shells, skid plates and pressure-vessel heads in 2205 and 2507 plate.
Pharma Equipment: Process tanks and vessels where chloride cleaning agents would crack 316L.

Duplex and super duplex are supplied as hot-rolled plates, cold-rolled sheets, strip and coils, cut pieces, rings, discs and circles. Sizes on request – share thickness, width, length and grade.

Duplex Plate: Specs, Sizes & Equivalents

Thickness on duplex plate is checked against the ordered size, the A240 tolerance and an agreed measuring method. Each cut piece is stamped with the plate's heat number and recorded, and weights are taken on a weighing machine calibrated every 7 days, so the invoice, packing list and MTC agree.

Duplex Plate: ASTM / ASME Specifications by Form

Duplex 2205 Plate & Sheet: ASTM A240 / SA240
UNS S31803 and S32205, usually dual-certified. Super duplex 2507: UNS S32750 to ASTM A240 / ASME SA240.
Finishes: hot-rolled annealed and pickled plate; cold-rolled 2B sheet. EN 10088-2 equivalents on request.

Typical Duplex Plate Chemistry & Properties

Typical Cr: 2205 22–23%, 2507 24–26%
Typical Mo: 2205 3.0–3.5%, 2507 3–5%; nitrogen raises strength and pitting resistance in both grades.
Typical yield minimums (A240): 2205 (S32205) 450 MPa; 2507 (S32750) 550 MPa.

FAQ: Can you cut duplex plate into circles or rings?

Yes, cut to your OD, ID and thickness.
Q: Which spec covers duplex sheet and plate? A: ASTM A240 / ASME SA240, supplied with an EN 10204 3.1 mill test certificate.
Q: 2205 or 2507 plate? A: 2205 for most chloride service; 2507 for warm seawater, higher chlorides or higher design strength.

Duplex Plate Equivalent Grades & FAQ

Equivalents: 1.4462 (2205) · 1.4410 (2507)
Q: Do you supply duplex sheet in coil? A: Yes, coils and strip on request, with sizes confirmed per enquiry.
Enquire for Duplex Plate: call +91 99872 73700 or email sales@ganeshmetals.com with form, size and quantity.

Certified Duplex Plate Supply

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

ISO 9001/14001/45001
MTC to EN 10204 3.1 with heat-number traceability
ASTM A240 / ASME SA240 compliance

Duplex Plate Forms We Supply

Hot-Rolled Plate
Cold-Rolled Sheet
Strip & Coils
Circles
Rings & Discs
Cut-to-Size Pieces

Why Ganesh Metals?

Stockist, supplier and processor in Mumbai since 1992
PMI-verified Duplex Plate with original mill markings
Sizes on request – send Duplex Plate 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