Incoloy 825 Pipe Fittings
Hastelloy C22 Pipe Fittings Manufacturer & Supplier
Hastelloy C22 Pipe Fittings are premium nickel-chromium-molybdenum alloy components known for their exceptional resistance to pitting, crevice corrosion, stress-corrosion cracking, and oxidation in highly aggressive environments. This alloy provides outstanding protection against a wide range of corrosive media, including strong acids, oxidizing chemicals, seawater, and chloride-containing solutions.
Engineered for high-performance applications, Hastelloy C22 maintains excellent mechanical strength, stability, and corrosion resistance even at elevated temperatures. Its superior resistance to both oxidizing and reducing conditions makes it a preferred material for chemical processing, pharmaceuticals, oil & gas, and pollution control industries.
Key Features
Exceptional resistance to pitting and crevice corrosion
Outstanding performance in wet chlorine, nitric acid, sulfuric acid, and acetic acid
Resistant to oxidizing & reducing environments
Excellent protection against stress corrosion cracking
Superior thermal stability at high temperatures
High strength and durability under severe corrosive conditions
Excellent weldability & formability
Suitable for high-pressure & high-temperature applications
Specifications
| Category | Details |
|---|---|
| Material | Hastelloy C22 |
| UNS Number | N06022 |
| Werkstoff Nr. | 2.4602 |
| Standard | ASTM B366 / ASME SB366 |
| Type | Seamless, Welded, Buttweld, Forged |
| Fitting Types | Elbow, Tee, Reducer, Cap, Stub End, Nipple, Cross |
| Size Range | ½” to 48” |
| Schedule | SCH 10s, 20, 40, 80, 120, 160, XXH |
| Dimensions | ASME B16.9, ASME B16.28, MSS SP-43 |
| End Connections | Buttweld, Socket Weld, Threaded |
| Manufacturing | Hot Forming, Cold Forming, Fabricated |
Equivalent Grades
| Grade | UNS | Werkstoff Nr. |
|---|---|---|
| Hastelloy C22 | N06022 | 2.4602 |
Available Sizes
Pipe Fittings Size: ½” to 48”
Thickness: SCH 10 to XXH
Custom sizes available based on requirement
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 |
| Manganese (Mn) | ≤ 0.50 |
| Silicon (Si) | ≤ 0.08 |
| Carbon (C) | ≤ 0.015 |
| Vanadium (V) | ≤ 0.35 |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 690 MPa (Min) |
| Yield Strength | 310 MPa (Min) |
| Elongation | 45% |
| Hardness | 95 HRB (Max) |
Physical Properties
| Property | Value |
|---|---|
| Density | 8.69 g/cm³ |
| Melting Range | 1325 – 1370°C |
| Electrical Resistivity | 1.28 µΩ·m |
| Thermal Conductivity | 10.0 W/m·K |
| Specific Heat | 450 J/kg·K |
| Modulus of Elasticity | 205 GPa |
Types of Hastelloy C22 Pipe Fittings
Elbows: 45°, 90°, SR & LR
Reducers: Concentric & Eccentric
Tees: Equal & Reducing
End Caps
Stub Ends: Long & Short
Cross Fittings
Pipe Nipples
Custom Fabricated Fittings
Corrosion Resistance
Hastelloy C22 offers exceptional protection against:
Pitting & crevice corrosion
Chloride-induced corrosion
Strong oxidizing environments (chlorine, nitric acid)
Reducing acids (sulfuric, acetic, hydrochloric)
Stress-corrosion cracking in chloride media
Seawater corrosion & brine solutions
Wet chlorine gas & chemical dissolving systems
The alloy’s high chromium, molybdenum, and tungsten content provides superior corrosion resistance across a broad spectrum of harsh chemicals.
Heat Resistance
Excellent oxidation resistance up to 1250°C
Maintains structural integrity at high temperatures
Resistant to thermal fatigue & carburization
Ideal for high-temperature chemical & industrial processes
Heat Treatment
Solution Annealing: 1120°C – 1175°C
Cooling: Rapid quenching to maintain corrosion resistance
NO hardening by heat treatment (solid-solution hardened alloy)
Welding
Hastelloy C22 Pipe Fittings exhibit excellent weldability:
Suitable welding methods:
GTAW / TIG
GMAW / MIG
SMAW / Stick Welding
Plasma Arc Welding
Recommended filler metals:
Hastelloy C22 weld wire
Hastelloy C276 filler metal
Nickel Alloy 625 (in specific conditions)
Post-weld heat treatment is generally not required.
Fabrication
Good cold & hot workability
Strong work-hardening requires heavy-duty tools
Suitable for bending, forming & machining
Requires low heat input during welding
Maintains high mechanical strength after fabrication
Applications
Chemical Processing Plants
Petrochemical Industry
Pharmaceutical Manufacturing
Pollution Control Equipment
Pulp & Paper Processing
Waste Treatment Facilities
Offshore & Marine Engineering
Acid Production Plants
Chlorination Systems
Gas Scrubbers & Evaporators