Alloy C22 / UNS N06022 / 2.4602
Alloy C22 / UNS N06022 / 2.4602– extreme corrosion resistance
Properties of Alloy C22 / UNS N06022 / 2.4602
Alloy C22 / UNS N06022 / 2.4602 is a versatile, high-performance nickel-chromium-molybdenum-tungsten alloy
designed for extreme corrosion resistance. It features:
Key Features:
- Exceptional resistance to oxidizing and reducing media
- Superior performance in environments causing pitting, crevice corrosion, and stress corrosion cracking
- High stability in mixed acid systems including nitric, sulfuric, hydrochloric, and phosphoric acids
- Excellent weldability, with minimal risk of sensitization or intergranular attack
Applications of Alloy C22 / UNS N06022 / 2.4602
Alloy C22 / UNS N06022 / 2.4602 is widely used in demanding industrial environments:
- Chemical processing: reactors, heat exchangers, piping systems
- Pollution control: flue gas desulfurization, waste incineration, sewage treatment
- Pharmaceutical and biotech equipment
- Oil & gas industry: sour gas environments, offshore components
- Pulp and paper industry: bleaching equipment
- Acid production and storage
Specification Overview
| Material number | 2.4602 |
| Alloy | C22 |
| EN designation | NiCr21Mo14W |
| UNS | NiCr21Mo14W |
| Böhler Grade | L22 |
| Semi-finished products (strip, sheet, pipe, rod) | DIN 17744 / DIN 17752 |
| Forged or rolled components | ASTM B 574 / ASME SB 574 /DIN 17752/ VdTÜV 479 |
| Sheets / strips | ASTM B 575 / ASME SB 575 / DIN 17751 / VdTÜV 479 |
| Wire | DIN 17753 |
| Pipe / Tube | ASTM B 619 / ASME SB 619 / ASTM B 622 / ASME SB 622/ ASTM B 626 / ASME SB 626 |
Physical Properties:
| Property | Value |
|---|---|
| Material Density | 8.69 g/cm³ |
| Melting Point | 1335 – 1380°C |
| Thermal conductivity (20 °C) | 10.1 W/(m·K) |
| Electrical Resistivity | 1.14 Ω·mm²/m |
| Thermal Expansion (20–100 °C) | 11.1 × 10⁻⁶/K |
Mechanical Properties:
(Solution Annealed)
| Property | Typical Value |
|---|---|
| Tensile Strength Rm | ≥ 690 MPa |
| Yield Strength Rp0.2 | ≥ 310 MPa |
| Elongation A5 | ≥ 45% |
Typical Chemical Composition:
Element Content acc. to VdTÜV Werkstoffblatt 479
| C | Si | Mn | P | Fe | V |
| ≤ 0.010 | ≤ 0.08 | ≤0.50 | ≤ 0.025 | 2.0 – 6.0 | ≤ 0.35 |
| Co | Cr | Mo | Ni | W | |
| ≤ 2.50 | 20.0 – 22.5 | 12.5 – 14.5 | REM | 2.5 – 3.5 |
Product Portfolio
Our company offers Alloy C22 / UNS N06022 / 2.4602 in a wide range of forms and processing stages:
- Forged and Machined Components – per drawing or specification
- Sheets and Plates – hot/cold rolled, solution annealed
- Bars and Rods – forged or rolled, pickled
- Tubes and Pipes – seamless or welded
- Wire – drawn or rolled
- Fittings and Flanges
All information without guarantee and for informational purposes only.