Incoloy 020 Round Bar (Alloy 20 / UNS N08020 / W.Nr. 2.4660)
Incoloy 020 Round Bar, commonly known as Alloy 20, is a nickel–iron–chromium alloy with copper and molybdenum, developed specifically for excellent resistance to sulfuric acid and other aggressive chemical environments. It combines outstanding corrosion resistance with good mechanical properties, making it a reliable choice for chemical, petrochemical, and pharmaceutical industries.
Key Features
- Exceptional resistance to sulfuric acid
- Excellent protection against pitting and crevice corrosion
- Good resistance to stress corrosion cracking
- Stable austenitic structure
- Good weldability and fabrication characteristics
- Reliable performance in aggressive chemical environments
Equivalent Grades
| Standard | Equivalent |
|---|---|
| UNS | N08020 |
| DIN / EN | 2.4660 |
| ASTM | Alloy 20 |
Sizes
- Diameter: 6 mm to 350 mm
- Length: Random, Cut Length, or as per customer requirement
Incoloy 020 Chemical Composition
| Element | Percentage (%) |
|---|---|
| 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 |
| Niobium (Nb) | 8 × C (min) |
| Carbon (C) | ≤ 0.07 |
| Manganese (Mn) | ≤ 2.0 |
| Silicon (Si) | ≤ 1.0 |
UNS N08020 Mechanical Properties
| Property | Typical Value |
|---|---|
| Tensile Strength | ≥ 550 MPa |
| Yield Strength (0.2%) | ≥ 240 MPa |
| Elongation | ≥ 30% |
| Hardness | ≤ 90 HRB |
Alloy 20 Physical Properties
| Property | Value |
|---|---|
| Density | 8.08 g/cm³ |
| Melting Range | 1357 – 1400 °C |
| Modulus of Elasticity | 195 GPa |
| Thermal Conductivity | 9.8 W/m·K |
Types of Incoloy 020 Round Bar
- Hot Rolled Round Bar
- Cold Drawn Round Bar
- Forged Round Bar
- Precision Machined Bar
Applications
- Sulfuric acid processing equipment
- Chemical processing plants
- Petrochemical industry components
- Pharmaceutical manufacturing equipment
- Heat exchangers and condensers
- Food and beverage processing systems
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