Alloy Wire International
Datasheet: Hastelloy˘ C-22
Hastelloy˘ C-22
A Nickel-Chromium-Molybdenum alloy with better overall resistance and versatility than any other NiCrMo available. It has excellent resistance to localised corrosion and to a variety of mixed industrial chemicals. Hastelloy C-22 is used in severely corrosive media involving high chloride and temperature applications such as buffer solutions, active pharmaceutical ingredients (API), fabric softeners, cleaning supplies, and condiments such as soy and chili sauce. Like other nickel alloys, Hastelloy C-22 is extremely ductile, exhibits exceptional weldability, and can easily be fabricated into industrial components.
Hastelloy C-22 is also known as Nicrofer 5621, Superimphy C22, and Inconel 622.
Available in all profile options
Key Features
Hastelloy C-22 offers the following key features:
Better overall corrosion resistance than Hastelloy C-4 & C-276 and Inconel 625.
Outstanding resistance to pitting, crevice corrosion and stress corrosion cracking.
Typical Applications
Hastelloy C-22 is known to be suitable for the following applications:
Chlorination systems
Nuclear fuel reprocessing
Pickling systems
Designations
W.Nr 2.4602
UNS N06022
AWS 053
Specifications
ASTM B574
ASTM B575
ASTM B619
ISO 15156-3 (NACE MR 0175)
Chemical Composition
The chemical composition of Hastelloy C-22 is indicated in the table below:
| Element | Min % | Max % |
|---|---|---|
| Cr | 20.00 | 22.50 |
| Mo | 12.50 | 14.50 |
| Fe | 2.00 | 6.00 |
| W | 2.50 | 3.50 |
| C | – | 0.015 |
| Si | – | 0.08 |
| Co | – | 2.50 |
| Mn | – | 0.50 |
| V | – | 0.35 |
| P | – | 0.02 |
| S | – | 0.02 |
| Ni | Bal |
Alloy Details
Hastelloy C-22 density, melting point, coefficient of expansion, and modulus of elasticity is indicated in the table below:
| Density | Melting Point | Coefficient of Expansion | Modulus of Rigidity | Modulus of Elasticity |
|---|---|---|---|---|
| 8.69 g/cm³ | 1399 °C | 12.4 μm/m °C (20 – 100 °C) | 78.6 kN/mm² | 205.5 kN/mm² |
| 0.314 lb/in³ | 2550 °F | 6.9 x 10-6 in/in °F (70 – 212 °F) | 11400 ksi | 29806 ksi |
Heat treatment of finished parts
The typical heat treatment of Hastelloy C-22:
| Condition as supplied by AWI | Type | Temperature | Time | Cooling |
|---|---|---|---|---|
| Annealed or Spring Temper | Stress Relieve | 400 – 450 °C (750 – 840 °F) | 2 Hr | Air |
Properties
The typical mechanical properties of Hastelloy C-22:
| Annealed | ||
|---|---|---|
| Approx. tensile strength | <1100 N/mm² | <159 ksi |
| Approx. operating temperature depending on load** and environment | -200 to +400 °C | -330 to +750 °F |
| Spring Temper | ||
|---|---|---|
| Approx. tensile strength | 1400 – 1700 N/mm² | 203 – 247 ksi |
| Approx. operating temperature depending on load** and environment | -200 to +400 °C | -330 to +750 °F |
The above tensile strength ranges are typical. If you require different please ask.
*Trade name of Haynes International
