Nickel Alloys Alloy 825 Fittings Overview
Zeon Exports supplies Nickel Alloy 825 (Incoloy, UNS N08825) fittings – elbows, tees, reducers, caps and stub ends – a nickel-iron-chromium alloy with molybdenum, copper and titanium additions for outstanding acid and chloride resistance.
Nickel Alloy 825 (Incoloy) Fittings connect and direct piping runs carrying sulfuric acid, phosphoric acid and chloride-bearing process streams in chemical processing and oil & gas systems. Its nickel-iron-chromium base with molybdenum and copper additions gives outstanding resistance to acids, pitting, crevice corrosion and chloride stress corrosion cracking across a wide range of process conditions.
- High nickel content resists chloride-ion stress corrosion cracking
- Tensile ≥586 MPa, yield ≥241 MPa in the annealed condition
- EN 10204 3.1 certified, export-ready worldwide
Quick Specifications of Nickel Alloys Alloy 825 Fittings
Nickel Alloy 825 (Incoloy) Fittings are produced to internationally recognized specifications.
| Field | Detail |
|---|---|
| Material/Grade | Nickel Alloy 825 (Incoloy) |
| UNS | N08825 |
| DIN/Werkstoff Number | 2.4858 |
| Standards | ASTM B366 |
| Form | Elbows, Tees, Reducers, Caps, Stub Ends |
| Finish | Pickled & Passivated |
| Heat Treatment | Annealed |
| Certification | EN 10204 3.1 |
Equivalent Grades of Alloy 825
Alloy 825 (Incoloy 825) is recognized under several international designations below.
| UNS | DIN/Werkstoff Number | Common Trade Name | ASTM/ASME Standard |
|---|---|---|---|
| N08825 | 2.4858 | Incoloy 825 | ASTM B366 |
Chemical Composition of Alloy 825
Composition per ASTM B366 for UNS N08825; exact limits can vary slightly by specification and heat.
| Element | Composition (%) |
|---|---|
| Nickel (Ni) | 38.0 – 46.0 |
| Iron (Fe), min | 22.0 |
| Chromium (Cr) | 19.5 – 23.5 |
| Molybdenum (Mo) | 2.5 – 3.5 |
| Copper (Cu) | 1.5 – 3.0 |
| Titanium (Ti) | 0.6 – 1.2 |
| Carbon (C), max | 0.05 |
| Manganese (Mn), max | 1.00 |
| Sulphur (S), max | 0.03 |
| Silicon (Si), max | 0.50 |
| Aluminum (Al), max | 0.20 |
Physical Properties of Nickel Alloy 825 (Incoloy)
Physical properties for Incoloy 825, confirmed against manufacturer data.
| Property | Value |
|---|---|
| Density | ~8.14 g/cm3 (typical) |
| Melting Range | ~1370 – 1400°C (typical) |
| Magnetic Behaviour | Essentially non-magnetic |
Mechanical Properties of Nickel Alloys Alloy 825 Fittings
Minimum mechanical properties for annealed UNS N08825 per ASTM B366.
| Property | Minimum Value |
|---|---|
| Tensile Strength | 586 MPa (85 ksi) |
| Yield Strength (0.2% offset) | 241 MPa (35 ksi) |
| Elongation | 30% |
| Condition | Annealed |
Corrosion Resistance of Nickel Alloy 825 (Incoloy)
- Nickel Alloy 825 Fittings resist both oxidizing and reducing media, a versatile profile among nickel alloys.
- Acid resistance: molybdenum and copper give outstanding resistance to sulfuric and phosphoric acids.
- Chloride SCC resistance: high nickel content resists chloride-ion stress corrosion cracking that limits stainless steels.
- Pitting and crevice resistance: molybdenum contributes strong resistance to localized attack in chloride media.
Heat Resistance of Nickel Alloy 825 (Incoloy)
Nickel Alloy 825 fittings have good mechanical properties from cryogenic temperatures to moderately high temperatures, but are not normally used above roughly 540°C (1,000°F), where microstructural changes can significantly lower ductility and impact strength. Confirm exact service limits against the governing standard and application before specifying.
Key Properties of Nickel Alloys Alloy 825 Fittings
Beyond corrosion and heat performance, Incoloy 825 fittings offer these additional properties.
- Good impact strength maintained at cryogenic temperatures
- Good weldability using ERNiFeCr-1 matching filler metal
- Similar to Alloy 800 with improved aqueous corrosion resistance
- Machinable with standard tooling, allowing for work hardening
Benefits of Nickel Alloys Alloy 825 Fittings
Choosing Incoloy 825 fittings from Zeon Exports delivers measurable advantages for your project.
- Broad chemical compatibility across acidic and chloride media
- Full MTC 3.1 documentation for project QA/QC requirements
- Multiple sizes and finishes to match exact 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 825 Fittings
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Call: +91 98205 33105
Email: info@zeonexports.com
Website: www.zeonexports.com
Address: A-7/9, Saboo Building, Ardeshir Dady Cross Lane, Cawasji Patel Tank Road, Mumbai – 400004
Frequently Asked Questions About Nickel Alloys Alloy 825 Fittings
Common questions about Nickel Alloy 825 (Incoloy) Fittings, answered below.
Q1: What is Nickel Alloy 825 (Incoloy)?
Ans. Incoloy 825 (UNS N08825) is a nickel-iron-chromium alloy with molybdenum, copper and titanium additions for acid resistance.
Q2: Which fitting types are available in Incoloy 825?
Ans. We supply elbows, tees, reducers, caps and stub ends manufactured to ASTM B366.
Q3: What standards do Incoloy 825 fittings meet?
Ans. Fittings are manufactured to ASTM B366, certified to EN 10204 3.1 mill test certificates.
Q4: What is the maximum service temperature?
Ans. Incoloy 825 is not normally used above roughly 540°C (1,000°F); confirm exact limits against your design code.
Q5: Is Incoloy 825 magnetic?
Ans. Incoloy 825 is essentially non-magnetic, being an austenitic nickel-iron-chromium alloy.
Q6: Is Incoloy 825 suitable for sulfuric acid service?
Ans. Yes, Incoloy 825 is especially resistant to sulfuric and phosphoric acids across a range of concentrations.
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 sizes?
Ans. Yes, fittings are available cut-to-size and in custom dimensions on request for bulk industrial orders.
