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HASTELLOY C22 FASTENERS | ULTIMATE GUIDE & MANUFACTURER
Ananka Fasteners is a premier manufacturer and supplier of high-quality Hastelloy C22 Fasteners (UNS N06022 / W.Nr. 2.4602). Engineered as an advanced austenitic superalloy, C22 offers unparalleled versatility and out-performs other nickel alloys in highly oxidizing aqueous media while retaining excellent resistance in reducing environments, making it indispensable for critical chemical processing and pharmaceutical infrastructure.
■ Complete Range of Hastelloy C22 Fasteners
As a master manufacturer, we produce a comprehensive range of Alloy C22 fasteners spanning from miniature M3 hardware to massive M100 flanged joints.
| Bolts & Screws | Nuts & Washers | Studs & Rods |
|---|---|---|
| Standard Hex Bolts / Heavy Hex Bolts | Standard Hex Nuts (DIN 934) | Fully Threaded Studs (DIN 976) |
| Socket Head Cap Screws (DIN 912) | Flat Washers (DIN 125) | Double Ended Studs |
| Flange Bolts / U-Bolts | Spring Washers | Threaded Rods / Tie Rods |
| Countersunk Screws / Set Screws | Belleville Washers | Wedge Anchor Bolts |
■ Standard Product Pages
Explore our dedicated standard pages for specific fastener categories to view detailed dimensions, availability, and specific technical data:
- Hastelloy C22 Bolts: Comprehensive range of heavy hex, flange, and socket head configurations.
- Hastelloy C22 Nuts: View our dedicated page for standard hex, heavy hex, and specialized nuts.
- Hastelloy C22 Stud Bolts : Engineered for extreme environments, these fasteners offer superior resistance to pitting, crevice corrosion, and stress corrosion cracking in both oxidizing and reducing media.
■ Hastelloy C22 Material Specifications
| Material Equivalent Grades | UNS N06022 | W.Nr. 2.4602 | Alloy C22 | JIS NW 6022 |
|---|---|
| Standard Specifications | ASTM F468 / ASME SF468 (Nonferrous Bolts & Studs) ASTM F467 / ASME SF467 (Nonferrous Nuts) ASTM B574 (Rod & Bar) / ASTM B564 (Forgings) |
| Size Range | Metric: M3 to M100 | Imperial: 3/16" to 4" |
| Thread Types | UNC, UNF, Metric Coarse, Metric Fine, BSW, BSF |
| Dimensional Standards | DIN (931/933/912/934), ISO (4017), ASME B18.13 |
■ Chemical Composition of Alloy C22
| Ni (Nickel) | Cr (Chromium) | Mo (Molybdenum) | Fe (Iron) | W (Tungsten) | Co (Cobalt) | Mn (Manganese) | C (Carbon) | Si (Silicon) |
|---|---|---|---|---|---|---|---|---|
| 56.0% Bal | 20.0 - 22.5% | 12.5 - 14.5% | 2.0 - 6.0% | 2.5 - 3.5% | 2.50% Max | 0.50% Max | 0.015% Max | 0.08% Max |
■ Mechanical & Physical Properties
| Tensile Strength (Min) | Yield Strength 0.2% Offset (Min) | Elongation (%) | Density | Melting Range |
|---|---|---|---|---|
| 690 MPa (100 ksi) | 310 MPa (45 ksi) | 45% Min | 8.69 g/cm³ | 1357 - 1399°C |
■ Installation Tribology & Anti-Seize Requirements
Nickel-based superalloys exhibit a naturally high coefficient of friction and a severe propensity to gall (cold weld) when threaded surfaces slide against one another under heavy compressive loads. To proactively counteract galling and achieve an accurate, highly predictable tension-to-torque relationship, the application of engineered anti-seize lubricants—typically non-metallic, high-temperature nickel-compatible pastes—is functionally mandatory during assembly. Proper lubrication ensures that the applied rotational force efficiently converts into direct longitudinal clamp load.
■ Key Characteristics & Industrial Applications
Featuring an elevated Chromium content (~22%), Hastelloy C22 provides highest-in-class resistance to localized corrosion, meaning that inside the tight thread pitches of a nut and bolt assembly, the alloy completely resists the onset of crevice corrosion and pitting, even in stagnant seawater and hot brine solutions.
- Chemical & Petrochemical Processing: High-pressure fluid transfer piping handling severe oxidizing mediums like sodium chloride, hydrochloric acid, and sulphuric acid.
- Pharmaceutical & Biotechnology: Premier choice for processing active pharmaceutical ingredients (API), buffer solutions, and high-purity water systems undergoing rigorous acidic cleaning-in-place (CIP) cycles without risk of metallic contamination.
- Pollution Control (FGD): Flue Gas Desulfurization scrubbers where fasteners secure stack liners and dampers against hot, highly acidic slurries saturated with abrasive particulates.