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Product Overview
Introduction To Incoloy 020 / Alloy 020 / UNS N08020 / W.Nr. 2.4660
INCOLOY 020 is a corrosion-resistant nickel-iron-chromium alloy designed specifically to handle sulfuric acid and other aggressive chemical environments. With the addition of copper and molybdenum, this alloy offers exceptional resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking.
MOKSH TUBES & FITTINGS LLP is a trusted manufacturer, exporter, supplier, importer, and stockist of INCOLOY 020 in multiple forms including pipes & tubes, fittings, flanges, fasteners, sheets, plates, bars, rods, coils, wire mesh, and custom-fabricated products.
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INCOLOY Alloy 020 Specifications
| Category | Details |
|---|---|
| Grade | INCOLOY® Alloy 020 / UNS N08020 / W.Nr. 2.4660 |
| Type | Nickel-Iron-Chromium Corrosion-Resistant Alloy |
| Typical Chemical Composition | Ni 36–38%, Fe 39–41%, Cr 19–21%, Cu 1%, Mo 0.5–1.0%, Nb 0.3–0.7%, C ≤ 0.03%, Mn ≤ 1%, Si ≤ 1%, S ≤ 0.015% |
| Conditions | Annealed, Solution Treated, Cold Worked |
| Heat Treatment | Annealing, Stress Relieving |
| Testing | Tensile, Hardness, Chemical, Corrosion, NDT on request |
| Certification | EN 10204 3.1 / 3.2 (Mill Test Certificate available) |
Chemical Composition of Incoloy 020
| Element | Composition (%) |
|---|---|
| Nickel (Ni) | 32.0 – 38.0 |
| Chromium (Cr) | 19.0 – 21.0 |
| Iron (Fe) | Balance |
| Molybdenum (Mo) | 2.0 – 3.0 |
| Copper (Cu) | 3.0 – 4.0 |
| Manganese (Mn) | ≤ 2.0 |
| Silicon (Si) | ≤ 1.0 |
| Carbon (C) | ≤ 0.02 |
Technical Composition of Incoloy 020
Physical Properties of Incoloy 020
| Property | Imperial Units | Metric Units |
|---|---|---|
| Density | 0.292 lb/in³ | 8.08 g/cm³ |
| Shear Modulus | 11 × 10³ ksi | 76 GPa |
| Young’s Modulus | 28 × 10³ ksi | 193 GPa |
| Specific Heat | 0.12 Btu/lb•°F | 500 J/kg•°C |
| Electrical Resistivity | 651 ohm·circ mil/ft | 1.08 µΩ·m |
| Thermal Conductivity | 85 Btu·in/ft²·h·°F | 12.3 W/m·°C |
| Coefficient of Thermal Expansion (77–212°F) | 8.2 × 10⁻⁶ in/in·°F | 14.7 µm/m·°C (25–100°C) |
Heat Treatment of Incoloy 020
| Heat Treatment Process | Temperature Range | Cooling / Procedure |
|---|---|---|
| Annealing / Solution Treatment | 1040 – 1120°C | Rapid water quench or air cool |
| Stress Relieving | 600 – 650°C | Hold for 1–2 hours, then air cool |
| Softening (Optional) | 980 – 1050°C | Furnace cool for maximum ductility |
| Hot Working Prep | 980 – 1120°C | Heat uniformly before forming |
| Recovery / Recrystallization | 700 – 900°C | Air cool |
Mechanical Properties of Incoloy 020
| Cold Reduction (%) | Yield Strength (ksi) | Yield Strength (MPa) | Tensile Strength (ksi) | Tensile Strength (MPa) | Elongation (%) | Hardness (Rockwell) |
|---|---|---|---|---|---|---|
| 0% | 44.4 | 306 | 95.8 | 661 | 38 | B83 |
| 20% | 111.0 | 765 | 119.8 | 826 | 13 | C23 |
| 30% | 124.3 | 857 | 131.5 | 907 | 8 | C28 |
| 40% | 127.5 | 879 | 135.0 | 931 | 7 | C27 |
| 50% | 139.5 | 962 | 147.5 | 1017 | 4 | C30 |
| 60% | 139.9 | 965 | 149.3 | 1029 | 5 | C31 |
International Standards & Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| UNS | N08020 |
| W.Nr (DIN) | 2.4660 |
| ASTM | B166 (Seamless Pipe), B167 (Tube), B168 (Plate, Sheet, Strip), B564 (Forgings) |
| EN | NiCr20FeNb |
| BS | NA 25 |
| JIS | SUS 820N |
| GOST | ХН80МФ |
Products in Incoloy 020
INCOLOY 020, is available in a variety of standard mill product forms used in high-performance corrosion-resistant applications. These include:
This alloy meets several recognized industry standards, including:
Uses and Advantages
Excellent resistance to sulfuric acid and other strong acids
High resistance to pitting and crevice corrosion
Resists stress corrosion cracking in chloride-bearing environments
Maintains corrosion resistance even after welding
Strong mechanical properties and good workability
Ideal for highly acidic and mixed chemical media environments
Applications of INCOLOY 020
INCOLOY 020 is a premium nickel-iron-chromium alloy engineered for superior corrosion resistance, especially in aggressive chemical environments involving sulfuric acid, chlorides, and mixed acids. Its balanced composition with copper and molybdenum makes it particularly effective against pitting, crevice corrosion, and stress corrosion cracking. This makes Alloy 020 a preferred material across industries that require durability, safety, and long-term reliability under corrosive and acidic conditions.
Chemical Processing Industry
Widely used in reactors, heat exchangers, piping systems, columns, evaporators, and storage vessels exposed to sulfuric, nitric, phosphoric, and organic acids.
Pharmaceutical and Food Processing
Ideal for production lines, processing tanks, filtration systems, and reactors requiring high corrosion resistance, cleanliness, and compliance with hygiene standards.
Oil & Gas Sector
Applied in sour gas processing, downhole tubing, manifolds, valves, and separators—especially in environments rich in hydrogen sulfide and chlorides.
Pollution Control and Acid Recovery Systems
Utilized in scrubbers, ductwork, acid regeneration units, and waste collection tanks handling highly corrosive acidic streams.
Marine and Offshore Applications
Suitable for seawater systems, desalination piping, and offshore equipment where pitting and crevice corrosion from chlorides is a concern.
Pulp and Paper Industry
Used in chlorine bleach plants, digesters, and chemical recovery systems that involve acidic or chloride-bearing process fluids.
Metal Pickling and Acid Storage
Trusted for storage tanks, piping, and evaporators in acid pickling lines and chemical regeneration systems.
Power Generation
Used in condensers, piping systems, and heat exchangers handling acidic cooling fluids or aggressive condensate streams.
INCOLOY 020’s remarkable chemical resistance, weldability, and mechanical integrity make it the ideal choice for critical infrastructure where long-term corrosion resistance is essential to plant reliability and operational safety.
WHY CHOOSE US?
INCOLOY Alloy 020 Price per kg in India
Typical Range: ₹900 – ₹1,500 per kg
(Price varies by size, OD, thickness, and condition.)
Contact us for exact quotation based on size and quantity.
FAQ's
What is Incoloy 020 and what makes it unique?
Incoloy 020, also known as Alloy 20, is a nickel-iron-chromium alloy specifically designed to resist sulfuric acid and other aggressive chemical environments. With the addition of copper and molybdenum, it provides excellent resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking, making it a preferred material for industries handling highly corrosive media.
What are the key properties of Incoloy 020 alloy?
Incoloy 020 exhibits outstanding corrosion resistance, strong mechanical properties, and excellent workability. It maintains resistance even after welding and delivers superior protection against sulfuric acid, nitric acid, chlorides, and mixed chemical environments. Its tensile strength can reach up to 149 ksi, with excellent ductility and hardness, ensuring durability and long service life in critical applications.
Where is Incoloy 020 commonly used?
Incoloy 020 is widely used in the chemical processing industry for heat exchangers, reactors, piping, and storage tanks handling strong acids. It is also utilized in pharmaceutical and food processing industries, oil and gas facilities, marine environments, pulp and paper plants, pollution control systems, acid recovery units, and power generation equipment, where resistance to acidic and chloride rich environments is essential.
What types of Incoloy 020 products are available?
MOKSH TUBES & FITTINGS LLP supplies Incoloy 020 in multiple forms including seamless and welded pipes, tubes, sheets, plates, coils, bars, fittings, flanges, fasteners, wire mesh, and custom fabricated components. All products comply with ASTM, ASME, and international standards to ensure high performance, reliability, and compatibility with demanding industrial requirements.
Why choose MOKSH TUBES & FITTINGS LLP for Incoloy 020 materials?
MOKSH TUBES & FITTINGS LLP is a trusted global supplier of Incoloy 020, offering a wide inventory, quick delivery, and custom machining solutions. With deep expertise in nickel-based and corrosion-resistant alloys, the company ensures ISO certified quality assurance, competitive pricing, and full compliance with international standards, making it a reliable partner for industries that demand long-lasting corrosion resistance and operational safety.
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