Nickel Alloys Alloy 825 Industrial Valves Overview
Zeon Exports supplies Nickel Alloy 825 (Incoloy, UNS N08825) industrial valves – ball, gate, globe and check types – a nickel-iron-chromium alloy with molybdenum, copper and titanium additions for outstanding resistance to sulfuric and phosphoric acids and chloride stress corrosion cracking.
Nickel Alloy 825 (Incoloy) Industrial Valves control and isolate flow in chemical processing, oil & gas and pollution control lines carrying sulfuric acid, phosphoric acid and chloride-bearing process streams. Its nickel-iron-chromium base with molybdenum and copper additions gives outstanding resistance to pitting, crevice corrosion and stress corrosion cracking across a wide range of process conditions.
- Outstanding resistance to sulfuric and phosphoric acids and chloride SCC
- 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 Industrial Valves
Nickel Alloy 825 (Incoloy) Industrial Valves are produced to internationally recognized specifications.
| Field | Detail |
|---|---|
| Material/Grade | Nickel Alloy 825 (Incoloy) |
| UNS | N08825 |
| DIN/Werkstoff Number | 2.4858 |
| Form | Ball, Gate, Globe, Check Valves |
| Finish | As specified |
| Heat Treatment | Solution 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 B425 |
Chemical Composition of Nickel Alloy 825
Composition per ASTM B425 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 |
| Aluminum (Al), max | 0.20 |
Physical Properties of Nickel Alloys Alloy 825
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 Industrial Valves
Minimum mechanical properties for annealed UNS N08825 per ASTM B425.
| 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 Alloys Alloy 825
Nickel Alloy 825 Industrial Valves are engineered for aggressive acid and chloride-bearing environments.
- Acid resistance: molybdenum and copper give strong resistance to sulfuric and phosphoric acid attack.
- Pitting and crevice resistance: chromium and molybdenum resist chloride pitting and crevice corrosion.
- Stress corrosion cracking resistance: the nickel-iron base resists chloride stress corrosion cracking where standard austenitic stainless valves fail.
Heat Resistance of Nickel Alloys Alloy 825
Nickel Alloy 825 valves are generally suited to continuous service at moderately elevated temperatures, with the annealed condition offering good ductility and toughness down to cryogenic temperatures. Confirm exact service limits against the governing standard and application before specifying.
Key Properties of Nickel Alloys Alloy 825 Industrial Valves
Beyond corrosion and heat performance, Alloy 825 valves offer these additional properties.
- Good weldability with matching filler metal, minimal post-weld treatment needed
- Good machinability using appropriate tooling for nickel alloys
- Stable, non-magnetic microstructure in the annealed condition
- Reliable ductility and toughness at cryogenic temperatures
Benefits of Nickel Alloys Alloy 825 Industrial Valves
Choosing Alloy 825 valves from Zeon Exports delivers measurable advantages for your project.
- Outstanding resistance to sulfuric and phosphoric acid service
- Full MTC 3.1 documentation for project QA/QC requirements
- Multiple valve types and end connections 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 Alloys products from Zeon Exports.
Request a Quote for Nickel Alloys Alloy 825 Industrial Valves
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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 825 Industrial Valves
Common questions about Nickel Alloy 825 (Incoloy) Industrial Valves, 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 and chloride resistance.
Q2: Which valve types are available in Incoloy 825?
Ans. We supply ball, gate, globe and check valves with Incoloy 825 bodies and trim.
Q3: Is Incoloy 825 resistant to sulfuric and phosphoric acid?
Ans. Yes, its molybdenum and copper content gives outstanding resistance to both sulfuric and phosphoric acid service.
Q4: Is Incoloy 825 magnetic?
Ans. Incoloy 825 is essentially non-magnetic, being an austenitic nickel-iron-chromium alloy.
Q5: Is Incoloy 825 suitable for chloride-bearing service?
Ans. Yes, Incoloy 825 resists chloride pitting, crevice corrosion and stress corrosion cracking.
Q6: What certification is provided with orders?
Ans. Every order ships with EN 10204 3.1 mill test certificates confirming grade, heat and dimensions.
Q7: Does Zeon Exports supply custom valve sizes?
Ans. Yes, valves are available in custom sizes and end connections on request for bulk industrial orders.
Q8: How is Incoloy 825 different from Inconel 625?
Ans. Incoloy 825 is optimized for sulfuric/phosphoric acid and chloride SCC resistance; Inconel 625 offers broader high-temperature strength and general corrosion resistance.
