Alloy 20 Plates, Sheets & Coils in coils, foils and rolls to ASTM B 463 / ASME SB 463. Get quotes from verified suppliers on MetalMitra.
- Alloy 20 Plates
- Sheets & Coils
- Alloy 20
- Plates
- Sheets
- Coils
- Strips
- Circles
- Cut to Size
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Specifications
| Dimensions | ASTM, ASME and API |
|---|---|
| Specifications | ASTM B 463 / ASME SB 463 |
| Grade | Alloy 20 – UNS N08020 |
| Size | 15NB to 150NB In |
| Thickness | 0.3 mm to 120mm |
| Hardness | Soft, Hard, Half Hard, Quarter Hard, Spring Hard etc |
| Finish | Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated) |
| Form | Coils, Foils, Rolls, Plain Sheet, Strip, Flats, Blank (Circle), Ring (Flange) etc |
Grades & standards
- Alloy 20
Chemical composition & mechanical properties
| Ni | Cr | Mo | Cu | Nb | C | Fe |
|---|---|---|---|---|---|---|
| 32.0–38.0 | 19.0–21.0 | 2.0–3.0 | 3.0–4.0 | 8×C – 1.00 | 0.07 | balance |
Single values are maximums unless marked min. Values per ASTM B463 / B464; always confirm against the purchase specification and the mill test certificate.
Alloy 20 Plates, Sheets & Coils for fabrication, vessels and cladding, available on MetalMitra in coils, foils and rolls to ASTM B 463 / ASME SB 463, with mill-certified traceability on every lot.
Alloy 20 Plates, Sheets & Coils are flat-rolled products supplied as hot-rolled plates, cold-rolled sheets, coils, strips and cut shapes for fabrication, pressure vessels and process equipment.
Alloy 20 (UNS N08020) was developed specifically to stand up to sulphuric acid. Alloy 20 (UNS N08020) is a niobium-stabilized nickel-iron-chromium alloy with copper and molybdenum, developed for excellent resistance to sulphuric acid and other aggressive chemical environments.
Product range
- Hot Rolled Plates — Heavier thickness plates for structural and pressure work.
- Cold Rolled Sheets — Thin sheets with smooth surface finish.
- Coils & Strips — Coils and slit strips for continuous processing.
- Circles & Cut Shapes — Blanks, circles, rings and profile-cut pieces.
Why engineers choose it
- Sulphuric Acid Resistance — Developed specifically for sulphuric acid service.
- Stress Corrosion Resistance — Good resistance to chloride stress corrosion cracking.
- Niobium Stabilized — Reduced risk of carbide precipitation during welding.
- Good Fabricability — Forms, machines and welds without fuss.
Where it is used
- Chemical Processing
- Sulphuric Acid Plants
- Pharmaceutical
- Petrochemical
- Pickling Equipment
- Food Processing
- Synthetic Fibre Plants
- Heat Exchangers
- Process Piping
- Storage Tanks
- Fabrication
- General Engineering
Inspection & paperwork
Suppliers on MetalMitra back Alloy 20 Plates, Sheets & Coils with the checks and paperwork your QA team expects.
- Thickness & dimensional inspection
- Flatness and surface inspection
- Grade verification against the order
- Chemical composition verification
- Mechanical testing as applicable
- Ultrasonic testing as applicable
- EN 10204 3.1 Mill Test Certificate
- Third-party inspection (TPI) on request
The MetalMitra advantage
- Verified suppliers — Mills, manufacturers and stockists are reviewed by the MetalMitra team before they list.
- One RFQ, several quotes — Share size, grade and quantity once and compare offers side by side.
- Full traceability — Heat numbers, EN 10204 3.1 MTCs and third-party inspection on request.
- Delivered worldwide — Export-worthy packing and shipping to India, the Middle East, Africa, Europe and the Americas.
Get a quote
Tell us the specification, quantity and destination you need for Alloy 20 Plates, Sheets & Coils. MetalMitra connects you with suppliers who can deliver.
Technical note: Values on this page are for reference. Always confirm against the governing standard, your purchase specification and the mill test certificate.
Applications & industries
- Chemical Processing
- Sulphuric Acid Plants
- Pharmaceutical
- Petrochemical
- Pickling Equipment
- Food Processing
- Synthetic Fibre Plants
- Heat Exchangers
- Process Piping
- Storage Tanks
- Fabrication
- General Engineering
- Petrochemical & Refining
- Chemical Processing
- Pharmaceutical
- Food & Dairy
Testing & documents
Ask for the documents you need in your requirement — suppliers confirm them in their quotation:
- Mill test certificate to EN 10204 3.1, or 3.2 with third-party witness
- Third-party inspection (TPI) by SGS, Bureau Veritas, TÜV or your nominated agency
- Tests as the standard or your order requires: hydro, PMI, IGC, NDT, hardness or impact tests
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