Hastelloy C22 Round Bar (UNS N06022)
Hastelloy C22 Round Bar is a nickel–chromium–molybdenum–tungsten alloy developed for exceptional resistance to corrosion in the most aggressive chemical environments. It offers superior protection against pitting, crevice corrosion, and stress corrosion cracking, even in oxidizing and reducing conditions where many other alloys fail.
Hastelloy C22 Round Bar (also known as Alloy C22 Round Bar) provides excellent fabricability and weldability compared to other high-molybdenum alloys, making it a preferred choice for critical applications in chemical processing, pollution control, pharmaceuticals, and offshore industries.
Key Features
- Outstanding resistance to pitting and crevice corrosion
- Excellent resistance to stress corrosion cracking
- Performs well in both oxidizing and reducing environments
- Superior resistance to chlorides, wet chlorine, and hypochlorites
- Good weldability and fabrication characteristics
Equivalent Grades
| Standard | Grade |
|---|---|
| UNS | N06022 |
| DIN | 2.4602 |
| EN | NiCr21Mo14W |
| JIS | NW 6022 |
Sizes
| Diameter Range | Length |
|---|---|
| 6 mm – 300 mm | 3 m, 6 m, Cut to Length |
| Custom Sizes | As per requirement |
Hastelloy C22 Chemical Composition
| Element | Percentage (%) |
|---|---|
| Nickel (Ni) | Balance |
| Chromium (Cr) | 20.0 – 22.5 |
| Molybdenum (Mo) | 12.5 – 14.5 |
| Iron (Fe) | 2.0 – 6.0 |
| Tungsten (W) | 2.5 – 3.5 |
| Cobalt (Co) | ≤ 2.5 |
| Carbon (C) | ≤ 0.015 |
| Manganese (Mn) | ≤ 0.50 |
| Silicon (Si) | ≤ 0.08 |
UNS N06022 Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 690 MPa |
| Yield Strength | ≥ 310 MPa |
| Elongation | ≥ 45% |
| Hardness | ~200 HB |
Alloy C22 Round Bar Physical Properties
| Property | Value |
|---|---|
| Density | 8.69 g/cm³ |
| Melting Range | 1357 – 1399°C |
| Thermal Conductivity | ~9.7 W/m·K |
| Electrical Resistivity | ~1.37 µΩ·m |
Types of Hastelloy C22 Round Bar
- Hot Rolled Hastelloy Round Bar
- Cold Drawn Hastelloy Round Bar
- Annealed Hastelloy Round Bar
- Bright / Precision Ground Hastelloy Round Bar
- Forged Hastelloy Round Bar
Applications
- Chemical processing equipment
- Pollution control and waste treatment systems
- Pulp and paper industry equipment
- Pharmaceutical and food processing plants
- Offshore and marine environments
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