Chemical Composition
| Element | Ni | Cr | Mo | Cu | Fe | ||
| % Range | 38–46 | 19.5–23.5 | 2.5–3.5 | 1.5–3 | Bal. | 34 | |
Mechanical Properties
- Tensile Strength: ≥550 MPa
- Yield Strength: ≥220 MPa
- Elongation: ≥30%
- Hardness: ~160 HB (Annealed) 23
Key Performance Advantages
- Corrosion Resistance:
- Superior resistance to sulfuric acid, phosphoric acid, chloride stress corrosion cracking (SCC), and oxidizing environments 35.
- Excellent performance in mixed acid media (e.g., nitric + sulfuric acids) 45.
- High-Temperature Stability: Maintains strength up to 550°C 25.
Types of Nuts Produced with Incoloy 825
- Hex Nuts (ISO 4032 / DIN 934)
- Flange Nuts (ISO 7040)
- Lock Nuts (DIN 985)
- Heavy-Duty Coupling Nuts (ANSI B18.2.2)
- Custom threads: UNC, UNF, Metric 56
Applications Across Industries
- Chemical Processing:
- Reactors, heat exchangers, and pipelines handling sulfuric acid or chlorinated solvents 35.
- Oil & Gas:
- Offshore platform components, downhole tools, and sour gas processing equipment 25.
- Marine & Energy:
- Seawater-cooled systems, desalination plants, and nuclear fuel reprocessing equipment 45.
- Pollution Control:
- Scrubbers, flue gas ducts, and waste treatment systems 56.
- Incoloy 825 nuts
- UNS N08825 fasteners
- ASTM B425 hex nuts
- Corrosion-resistant alloy nuts
- BS 3076 NA16 fasteners
- High-temperature nickel alloy nuts
- Sulfuric acid-resistant nuts
- Marine-grade Incoloy 825 nuts
Why Choose Incoloy 825 Nuts?
- Cost-Efficiency: Comparable to higher-cost alloys like Hastelloy C-276 but with optimized corrosion resistance 35.
- Weldability: Compatible with TIG, MIG, and plasma welding; post-weld heat treatment optional 46.
- “Incoloy 825 Nuts for Chemical Plants”).
- Explore Incoloy 825 bolts for offshore rigs”).
- Incoloy 825 Hex Nuts in Sulfuric Acid Reactor Assembly”.
