Nickel Alloys Alloy C276 Flanges Overview
Zeon Exports supplies Nickel Alloy C276 (Hastelloy, UNS N10276) flanges, a nickel-molybdenum-chromium alloy with tungsten addition offering exceptional resistance to both oxidizing and reducing corrosive media across a very wide range of process conditions.
Nickel Alloy C276 (Hastelloy) Flanges connect and seal the most demanding mixed-acid, chloride and sour-gas process piping in chemical processing and pollution control systems. Its high molybdenum and tungsten content gives outstanding resistance to pitting, crevice corrosion and stress corrosion cracking in both oxidizing and strongly reducing environments, making it one of the most versatile corrosion-resistant alloys available.
- Resists both oxidizing and reducing acids in a single alloy
- Tensile ≥690 MPa, yield ≥283 MPa in the annealed condition
- EN 10204 3.1 certified, export-ready worldwide
Quick Specifications of Nickel Alloys Alloy C276 Flanges
Nickel Alloy C276 (Hastelloy) Flanges are produced to internationally recognized specifications.
| Field | Detail |
|---|---|
| Material/Grade | Nickel Alloy C276 (Hastelloy) |
| UNS | N10276 |
| DIN/Werkstoff Number | 2.4819 |
| Standards | ASTM B564 |
| Form | Weld Neck, Slip-On, Blind, Socket Weld |
| Finish | As specified (confirm on order) |
| Heat Treatment | Solution Annealed |
| Certification | EN 10204 3.1 |
Equivalent Grades of Alloy C276
Alloy C276 (Hastelloy C-276) is recognized under several international designations below.
| UNS | DIN/Werkstoff Number | Common Trade Name | ASTM/ASME Standard |
|---|---|---|---|
| N10276 | 2.4819 | Hastelloy C-276 | ASTM B564 |
Chemical Composition of Alloy C276
Composition per ASTM B564 for UNS N10276; exact limits can vary slightly by specification and heat.
| Element | Composition (%) |
|---|---|
| Nickel (Ni) | Balance |
| Chromium (Cr) | 14.5 – 16.5 |
| Molybdenum (Mo) | 15.0 – 17.0 |
| Iron (Fe) | 4.0 – 7.0 |
| Tungsten (W) | 3.0 – 4.5 |
| Cobalt (Co), max | 2.5 |
| Manganese (Mn), max | 1.0 |
| Vanadium (V), max | 0.35 |
| Carbon (C), max | 0.01 |
| Silicon (Si), max | 0.08 |
Physical Properties of Nickel Alloy C276 (Hastelloy)
Physical properties for Hastelloy C276, confirmed against manufacturer data.
| Property | Value |
|---|---|
| Density | ~8.89 g/cm3 (typical) |
| Melting Range | ~1325 – 1370°C (typical) |
| Magnetic Behaviour | Essentially non-magnetic |
Mechanical Properties of Nickel Alloys Alloy C276 Flanges
Minimum mechanical properties for annealed UNS N10276 per ASTM B564.
| Property | Minimum Value |
|---|---|
| Tensile Strength | 690 MPa (100 ksi) |
| Yield Strength (0.2% offset) | 283 MPa (41 ksi) |
| Elongation | 40% |
| Condition | Solution Annealed |
Corrosion Resistance of Nickel Alloy C276 (Hastelloy)
- Nickel Alloy C276 Flanges resist an unusually broad range of corrosive media in a single alloy.
- Reducing acid resistance: excellent resistance to hydrochloric, sulfuric and phosphoric acids.
- Oxidizing resistance: performs well in wet chlorine, hypochlorite and other strongly oxidizing chemicals.
- Pitting and crevice resistance: high molybdenum and tungsten content gives outstanding resistance to chloride pitting and crevice attack.
Heat Resistance of Nickel Alloy C276 (Hastelloy)
Nickel Alloy C276 flanges retain good mechanical properties from cryogenic temperatures up to elevated service temperatures typical of the Ni-Cr-Mo family; sustained structural use is generally limited to a few hundred degrees Celsius before long-term aging effects become a concern. Confirm exact service limits against the governing standard and application before specifying.
Key Properties of Nickel Alloys Alloy C276 Flanges
Beyond corrosion and heat performance, Hastelloy C276 flanges offer these additional properties.
- Excellent weldability, often usable in the as-welded condition
- Good formability similar to standard austenitic stainless steels
- High resistance to stress corrosion cracking
- Reliable performance across cryogenic to elevated temperatures
Benefits of Nickel Alloys Alloy C276 Flanges
Choosing Hastelloy C276 flanges from Zeon Exports delivers measurable advantages for your project.
- One alloy covers both oxidizing and reducing chemical exposure
- Full MTC 3.1 documentation for project QA/QC requirements
- Multiple flange types and pressure classes to match project specs
- Reliable bulk supply with consistent ready stock
- Competitive export pricing for large industrial orders
- Fast dispatch to global project sites and ports
Related Products
Explore related Nickel Alloy products from Zeon Exports.
Request a Quote for Nickel Alloys Alloy C276 Flanges
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Call: +91 98205 33105
Email: info@zeonexports.com
Website: www.zeonexports.com
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Frequently Asked Questions About Nickel Alloys Alloy C276 Flanges
Common questions about Nickel Alloy C276 (Hastelloy) Flanges, answered below.
Q1: What is Nickel Alloy C276 (Hastelloy)?
Ans. Hastelloy C276 (UNS N10276) is a nickel-molybdenum-chromium alloy with tungsten, resisting both oxidizing and reducing media.
Q2: What flange types are available in Alloy C276?
Ans. We supply Weld Neck, Slip-On, Blind and other flange types manufactured to ASTM B564.
Q3: What standards do Alloy C276 flanges meet?
Ans. Flanges are manufactured to ASTM B564, certified to EN 10204 3.1 mill test certificates.
Q4: Is Alloy C276 magnetic?
Ans. Alloy C276 is essentially non-magnetic, being an austenitic nickel-based alloy.
Q5: Is Alloy C276 suitable for chlorine service?
Ans. Yes, Alloy C276 performs well in wet chlorine, hypochlorite and other strongly oxidizing chemicals.
Q6: How does Alloy C276 differ from Alloy 625?
Ans. Alloy C276 has higher molybdenum for stronger reducing-acid resistance; Alloy 625 has better high-temperature oxidation resistance.
Q7: What certification is provided with orders?
Ans. Every order ships with EN 10204 3.1 mill test certificates confirming grade, heat and dimensions.
Q8: Does Zeon Exports supply custom flange sizes?
Ans. Yes, flanges are available in custom sizes and pressure classes on request for bulk industrial orders.
