Excellent Resistance to Sulfuric Acid · High Strength & Durability · Good Resistance to Stress Corrosion Cracking · Global Industrial Supply
HRS Ferritic is a globally recognized leader in the alloy industry, known as a trusted Alloy 20 Coils Supplier, Alloy 20 Coils Stockist, and Alloy 20 Coils Importer, delivering premium-quality products sourced from valuable and certified manufacturers. With a strong commitment to quality, precision, and timely delivery, each product meets international standards and serves diverse industrial sectors with reliability, durability, and performance.
What are Alloy 20 Coils? Alloy 20 Coils are nickel-iron-chromium alloy coils designed for excellent resistance to corrosion, especially in sulfuric acid environments. They are also known as Carpenter 20 and are widely used in industries requiring strong resistance to chemical attack. These coils provide outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking.
Alloy 20 Coils work through a balanced combination of nickel, chromium, and molybdenum, which provides excellent resistance to acidic and corrosive environments. Copper improves resistance to sulfuric acid, while nickel enhances resistance to chloride stress corrosion cracking.
Key alloying elements that contribute to the superior corrosion resistance of Carpenter 20.
ASTM B463 · ASME SB463 · UNS N08020 · EN 2.4660
| Specification | Details |
|---|---|
| ASTM / ASME | ASTM B463 / ASME SB463 |
| UNS | UNS N08020 |
| EN | 2.4660 / NiCr20CuMo |
| DIN | 2.4660 / NiCr20CuMo |
| ISO | NiCr20CuMo |
| JIS | NCF 20 / NW 2200 CuMo (approx.) |
| Product Form | Sheets / Plates / Coils |
| Thickness Range | 0.5 mm to 100 mm |
| Standard Widths | 1000 mm, 1219 mm, 1250 mm, 1500 mm, 1800 mm, 2000 mm, 2500mm, 3000mm, 3500mm, etc |
| Standard Lengths | 2000 mm, 2440 mm, 2500 mm, 3000 mm, 5800 mm, 6000mm, etc |
| Custom Cuts | Width and Length available as per customer requirement |
| Surface Finish | Hot Rolled (HR), Cold Rolled (CR), Annealed & Pickled (AP) |
| Supply Condition | Solution Annealed |
| Cutting Methods | Plasma, Laser, Waterjet, Oxy Propane |
| Packaging | Bundled, Wooden Plates, Bubble wraps, Customized |
Precision sheets, heavy plates, and shim sheets available in ready stock.
Slitting coils, perforated coils, and thin foils (from 0.05 mm) in various sizes.
Circles, rings, custom-cut blanks, and chequered (tread) plates for unique needs.
Mill edge, slit edge, round edge, and square edge conditions available.
32.0 – 38.0% — Key for resistance to chloride stress corrosion.
19.0 – 21.0% — Crucial for oxidation resistance in chemicals.
3.0 – 4.0% — Enhances resistance to sulfuric acid solutions.
2.0 – 3.0% — Improves pitting resistance in aggressive media.
550 MPa (min) — Robust structural performance in harsh plants.
240 MPa (min) — Reliable 0.2% offset yield for stability.
30 – 45 % — High ductility for forming and fabrication.
≤ 95 HRB — Balanced hardness for optimal durability.
Available in multiple finishes and configurations for precision engineering.
Standard percentage breakdown of key elements in Alloy 20 (UNS N08020).
| Element | Percentage (%) |
|---|---|
| Nickel (Ni) | 32.0 – 38.0 |
| Chromium (Cr) | 19.0 – 21.0 |
| Iron (Fe) | Balance (~35–45%) |
| Molybdenum (Mo) | 2.0 – 3.0 |
| Copper (Cu) | 3.0 – 4.0 |
| Manganese (Mn) | ≤ 2.0 |
| Silicon (Si) | ≤ 1.0 |
| Carbon (C) | ≤ 0.07 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.035 |
| Columbium (Nb) | 8 × C min – 1.0 max |
As a trusted Alloy 20 Coils Supplier and Stockist, we offer competitive pricing sourced from valuable manufacturers.
Cross-reference table for international designations of Carpenter 20.
| Standard | Equivalent Grade |
|---|---|
| UNS | N08020 |
| Werkstoff / DIN | 2.4660 |
| EN (Numeric / Name) | 2.4660 / NiCr20CuMo |
| JIS (Japan) | NCF 20 / NW 2200 CuMo (approx.) |
| BS (British Standard) | NA 20 |
| GOST (Russia) | ЭИ 437Б |
| AFNOR (France) | Z2 NCDU 25-20 |
| AWS (Welding) | ERNiCrMo-3 / ER320LR |
| Alternative Name | Carpenter 20 / 20Cb-3 |
HRS Ferritic is committed to delivering high-quality alloy solutions with reliability and efficiency. We source materials from certified manufacturers to meet international standards across diverse industrial sectors.
Quick answers to common queries about Alloy 20 Coils.