Duplex Steel Sheets & Plates Supplier, Stockist & Exporter in Mumbai, India
Jade Alloys is an ISO-certified duplex steel sheets and plates supplier based in Mumbai, serving fabricators, EPC contractors and process equipment manufacturers across India and worldwide. Our duplex steel plates are built on a balanced ferritic-austenitic microstructure that gives them roughly double the yield strength of standard austenitic stainless steel, along with markedly better resistance to chloride pitting, crevice corrosion and stress-corrosion cracking. This combination of strength and corrosion resistance makes duplex steel sheets a cost-effective alternative to thicker, heavier austenitic grades in aggressive environments.
Manufactured to ASTM A240 / ASME SA240, our duplex sheets and plates carry 18–28% chromium and 1.5–8% nickel along with controlled molybdenum and nitrogen additions that lock in the austenite-ferrite phase balance. This chemistry gives the material dependable performance in acetic, phosphoric and nitric acid service, and lets it hold its mechanical integrity at elevated temperatures without distortion. Duplex steel is also comparatively easy to cut, form and weld, which is why it is so widely specified across shipbuilding, offshore platforms, desalination plants and chemical processing units. For applications needing even higher alloy content, see our Super Duplex Steel Sheets & Plates range.
Whether you need a duplex steel plate price list, a custom-cut duplex steel sheet, or bulk duplex stainless steel plate supply with full mill test certification, our sales engineers can match the right grade, finish and dimension to your project specification.
Grades of Duplex Steel Sheets & Plates We Supply
- Duplex Steel UNS S31803 (2205) Sheets & Plates
- Duplex Steel UNS S32205 Sheets & Plates
- Duplex Steel UNS S32506 Sheets & Plates
- Duplex Steel UNS S32615 (High-Silicon Austenitic) Sheets & Plates
- Super Duplex Steel UNS S32750 (2507) Sheets & Plates
- Super Duplex Steel UNS S32760 (Zeron 100) Sheets & Plates
Duplex Steel Sheets & Plates Specification
| Specification | ASTM A240 / ASME SA240 |
|---|---|
| Dimension Standards | MSRR, AMS, BS, JIS, AISI, ASTM, GB, DIN, EN, etc. |
| Thickness Range | 0.3 mm to 120 mm (Cold Rolled: 0.5–6.4 mm | Hot Rolled: 3.0–100 mm) |
| Width | 1000 mm, 1219 mm, 1500 mm, 1800 mm, 2000 mm, 2500 mm, 3000 mm, 3500 mm |
| Length | 2000 mm, 2440 mm, 3000 mm, 4000 mm, 5800 mm, 6000 mm, 8000 mm |
| Finish | Hot Rolled (HR), Cold Rolled (CR), 2B, 2D, BA/No.8, Satin, Hairline, Brushed, Plastic-Coated |
| Hardness | Soft, Hard, Half Hard, Quarter Hard, Spring Hard |
| Form | Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Coil, Strip, Flats, Blank (Circle), Ring (Flange) |
| Value-Added Services | Cladding, Heat Treatment, Annealing, Pickling, Polishing, Rolling, Cutting, Bending, Forging, Plasma / Laser / Oxy-Propane Profiling |
| HSN Code | 72192299 – Duplex Plate |
Chemical Composition of Duplex Steel Sheets & Plates (%)
| UNS Grade | Cr | Ni | Mo | N | C (max) | Other |
|---|---|---|---|---|---|---|
| S31803 | 21.0–23.0 | 4.5–6.5 | 2.5–3.5 | 0.08–0.20 | 0.030 | — |
| S32205 | 22.0–23.0 | 4.5–6.5 | 3.0–3.5 | 0.14–0.20 | 0.030 | — |
| S32506 | 24.0–26.0 | 5.5–7.2 | 3.0–3.5 | 0.08–0.20 | 0.030 | W: 0.05–0.30 |
| S32615 | 16.5–19.5 | 19.0–22.0 | 0.3–1.5 | — | 0.070 | Si: 4.8–6.0, Cu: 1.5–2.5 |
| S32750 | 24.0–26.0 | 6.0–8.0 | 3.0–5.0 | 0.24–0.32 | 0.030 | Cu: 0.50 max |
| S32760 | 24.0–26.0 | 6.0–8.0 | 3.0–4.0 | 0.20–0.30 | 0.030 | Cu: 0.5–1.0, W: 0.5–1.0 |
Mechanical Properties (ASTM A240 Minimum Requirements)
| UNS Grade | Yield Strength | Tensile Strength | Elongation | Hardness (BHN max) |
|---|---|---|---|---|
| S31803 | 450 MPa (65 ksi) | 620 MPa (90 ksi) | 25% | 293 |
| S32205 | 450 MPa (65 ksi) | 655 MPa (95 ksi) | 25% | 293 |
| S32506 | 450 MPa (65 ksi) | 620 MPa (90 ksi) | 18% | 270 |
| S32615 | 220 MPa (32 ksi) | 550 MPa (80 ksi) | 25% | — |
| S32750 | 550 MPa (80 ksi) | 795 MPa (116 ksi) | 15% | 310 |
| S32760 | 550 MPa (80 ksi) | 750 MPa (109 ksi) | 15% | 290 |
Equivalent Grades & Werkstoff Numbers
| UNS Grade | Common Name | W.Nr. | ASTM Forging Code |
|---|---|---|---|
| S31803 | Duplex 2205 | 1.4462 | F51 |
| S32205 | Duplex 2205 | 1.4462 | F60 |
| S32506 | Duplex (2205-family) | 1.4462 | F61 |
| S32615 | High-Silicon Austenitic Steel | — | — |
| S32750 | Super Duplex 2507 | 1.4410 | F53 |
| S32760 | Super Duplex Zeron 100 | 1.4501 | F55 |
Types of Duplex Steel Sheets & Plates We Stock
- Duplex Steel Plate
- Duplex Steel Chequered / Checker Plate
- Duplex SS Perforated Sheet
- Duplex Stainless Steel Coil
- Duplex Cold Rolled (CR) Sheet
- Duplex Hot Rolled (HR) Plate
- SA 240 Duplex Strip / Strip Tape
- Duplex SS Shim Stock / Shim Sheet
- ASME SA240 Mesh Plate
- Duplex Alloy Clad Plate
Need a perforated duplex sheet for a filtration or screening application? We supply ASTM A240 perforated duplex plate in round-hole patterns from 0.75 mm to 8 mm hole diameter across a range of open-area percentages — talk to our team for a custom hole-pattern quote.
Applications of Duplex Steel Sheets & Plates
- Oil & Gas and Offshore Production Equipment
- Chemical Process Pressure Vessels & Piping
- Desalination Plants
- Marine & Shipbuilding Structures
- Pulp & Paper Mill Equipment
- Heat Exchangers
- Flue Gas Scrubbing Equipment
- Fertilizer Plants
- Thermal & Nuclear Power Plants
- Food & Dairy and Pharmaceutical Processing
Duplex sheets and plates are frequently paired with matching Duplex Steel RTJ Gaskets, Duplex Steel Tube Plugs and Duplex Header Plugs in heat-exchanger and pressure-vessel assemblies — we stock all three so your project can be sourced from one supplier.
Duplex Steel Plate Weight & Dimension Reference
Standard duplex plate sizes we stock run from 4000 × 2000 mm up to 8000 × 2000 mm across thicknesses of 5 mm to 50 mm, with nominal sheet weight increasing roughly linearly with gauge for example, a 1″ (25.4 mm) duplex plate weighs approximately 40.8 kg/m², while a 4″ (101.6 mm) plate runs approximately 163 kg/m². For an exact quote on your size and thickness, use our Metal Weight Calculator or request a detailed product catalogue.
Duplex Steel Sheets & Plates Price in India
Duplex steel plate prices vary by grade, thickness, finish and order quantity. As an indicative guide, standard duplex 2205 hot-rolled plate typically trades in the range of US $600–900 per metric ton FOB, duplex cold-rolled sheet around US $560–4000 per ton depending on finish and thickness, and super duplex 2507 / Zeron 100 grades command a premium at US $500–3000 per ton FOB. These figures move with LME nickel, chrome and molybdenum pricing, so we recommend requesting a live quotation for your exact specification via the contact us page or WhatsApp.
Frequently Asked Questions About Duplex Steel Sheets & Plates
1. What are duplex steel sheets and plates used for?
2. What is the difference between duplex and super duplex steel plates?
3. Which standards govern duplex steel plate manufacturing?
4. What thickness range is available in duplex steel plates?
5. Do you supply duplex steel chequered plates and perforated sheets?
6. How is duplex steel plate priced?
7. Do you provide mill test certificates and export documentation?
Countries We Export Duplex Steel Sheets & Plates To
Get a Quote for Duplex Steel Sheets & Plates
Looking for a reliable Duplex Steel Sheets & Plates manufacturer, supplier, and exporter? Jade Alloys supplies premium-quality Duplex Steel sheets, plates, coils, shim sheets, perforated sheets, and chequered plates in a wide range of grades, thicknesses, and finishes. Every order is backed by complete material test certificates, export documentation, and timely worldwide delivery.
