Hastelloy C276 Fasteners (UNS N10276)
Ananka Fasteners is a premier manufacturer and supplier of extreme-duty Hastelloy C276 Fasteners (W.Nr. 2.4819). Manufactured in accordance with Haynes International Standards, Alloy C276 delivers unparalleled resistance to localized corrosion, stress-corrosion cracking, and both oxidizing and reducing media, making it the premier choice for severe chemical processing and pollution control.
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■ Hastelloy Alloy Selection Grid
To assist procurement managers and engineers, use our technical grid below to compare the performance profiles of our primary Hastelloy grades. Click the specific grade for its dedicated specification page.
| Grade / Anchor Link | Yield Strength (Min) | Key Chemical Resistance | Primary Application |
|---|---|---|---|
| Hastelloy C276 Fasteners | 41 ksi (283 MPa) | Wet chlorine, hypochlorite, sulfur compounds | Flue Gas Desulfurization (FGD), Chemical Processing |
| Hastelloy C22 Fasteners | 45 ksi (310 MPa) | Outstanding overall resistance to localized corrosion | Pharmaceuticals, Fine Chemicals |
| Hastelloy B2 Fasteners | 51 ksi (350 MPa) | Pure sulfuric, phosphoric & hydrochloric acids | Reducing environments, Acid Production |
| Hastelloy B3 Fasteners | 51 ksi (350 MPa) | Hydrochloric acid at all temps/concentrations | High-temperature acidic processes (improved thermal stability) |
■ Complete Range of Hastelloy C276 Fasteners
We manufacture a comprehensive range of Alloy C276 fasteners engineered to survive severe pitting and crevice corrosion environments.
| Bolts & Screws | Nuts & Washers | Studs & Rods |
|---|---|---|
| Hex Bolts / Heavy Hex Bolts | Hex Nuts / Heavy Hex Nuts | Fully Threaded Studs |
| Socket Head Cap Screws | Flange Nuts / Lock Nuts | Double Ended Studs |
| Flange Bolts / 12-Point Bolts | Flat Washers / Spring Washers | Custom CNC Machined Studs |
■ Mechanical Properties & Yield Strength
Hastelloy C276 Fasteners combine high mechanical strength with exceptional ductility, allowing them to be easily fabricated and heavily cold-worked without losing their corrosion resistance. Below are the standard mechanical properties:
| Tensile Strength (Min) | Yield Strength 0.2% Offset (Min) | Elongation (%) | Density |
|---|---|---|---|
| 100 ksi (690 MPa) | 41 ksi (283 MPa) | 40% Min | 8.89 g/cm³ |
■ Severe Chemical & Pollution Control Applications
Because of their high molybdenum (15-17%) and chromium (14.5-16.5%) content, Hastelloy C276 components are among the few materials that can withstand the corrosive effects of wet chlorine gas, hypochlorite, and chlorine dioxide.
- Pollution Control: Scrubbers, stack liners, dampers, and ducting in Flue Gas Desulfurization (FGD) systems.
- Chemical Processing: Reaction vessels, heat exchangers, and evaporators handling highly aggressive organic and inorganic acids.
- Pulp & Paper: Fasteners used in digesters and bleach plants.
- Waste Treatment: Equipment exposed to sour gas (H2S) and high-temperature incineration.
■ Quality Assurance & MTC Downloads
As a primary manufacturer based in Mumbai, our quality control goes beyond standard chemical analysis. We conduct rigorous first-hand testing on all Hastelloy C276 Fasteners to ensure they meet the stringent safety requirements of EPC contractors and chemical plant operators.
- Ultrasonic Testing (UT): Internal flaw detection performed on raw billets prior to machining.
- Destructive Testing: In-house tensile, yield, and elongation testing to verify structural integrity.
- PMI (Positive Material Identification): 100% optical emission spectroscopy scanning prior to dispatch to guarantee critical molybdenum and tungsten levels.
📄 Download Sample EN 10204:3.1 MTC (PDF)