Incoloy 825 is a nickel-iron-chromium alloy with additional elements of molybdenum, copper, and titanium. This alloy is renowned for its excellent corrosion resistance, particularly in aggressive environments such as those containing sulfuric and phosphoric acids. Incoloy 825 fasteners are a crucial component in various industrial applications where resistance to corrosion and high temperatures is paramount.
The key features of Incoloy 825 fasteners include their ability to withstand a wide range of corrosive media, both oxidizing and reducing. This makes them suitable for applications in chemical processing, pollution control, oil and gas extraction, and marine engineering. The inclusion of molybdenum and copper enhances the alloy's resistance to pitting and crevice corrosion, further extending its utility in harsh conditions.
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The high-strength characteristics of Incoloy 825 fasteners make them reliable for use in critical structural applications. The alloy retains its mechanical properties even at elevated temperatures, providing excellent performance in high-stress environments. Additionally, the titanium content imparts enhanced resistance to sensitization during welding, maintaining the alloy's corrosion resistance in welded areas.
Incoloy 825 fasteners are available in various forms, including bolts, nuts, screws, and washers. The versatility of these fasteners allows them to be employed in different configurations and assemblies, catering to the diverse needs of industries such as chemical processing, petrochemical, and power generation.
The manufacturing of Incoloy 825 fasteners adheres to stringent quality standards, ensuring that the final products meet the required specifications. Common fabrication methods include hot forging and cold working, followed by heat treatment to optimize the mechanical properties of the fasteners.
ASTM B425 / ASME SB425
DIN, ISO ,JIS ,GB, IS, BS, ASTM and all International Standards
M3 - M100 | 3/6″ - 4″ | Custom Sizes
DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3
UNF, BSW, BSF, METRIC, UNC, or as required
ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads
Hex, Threading, Square, Round as per Gauge Etc.
Hex, Square, Round, Hex flange, Flat, T-head & Triangular etc.
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN | OR |
| Incoloy 825 | 2.4858 | N08825 | NCF 825 | NA 16 | ЭП703 | NFE30C20DUM | NiCr21Mo | XH38BT |
| Grade | C | Mn | Si | S | Cu | Fe | Ni | Cr | Al | Ti |
| 825 | 0.05 max | 1.00 max | 0.5 max | 0.03 max | 1.50 – 3.00 | 22.00 min | 38.00 – 46.00 | 19.50 – 23.50 | 0.02 max | 0.06 – 1.20 |
| Grade | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 825 | 8.14 g/cm3 | 1400 °C (2550 °F) | Psi – 80,000 , MPa – 550 | Psi – 32,000 , MPa – 220 | 30 % |
Oil & Gas Industrires
Chemical Industries
Construction Industries
Offshore Pipelines & Pipe Works
Petrochemical Industry
Shipbuilding Industries
Hydraulic Applications
Piping Systems
Refining Industry
Food Processing Industry
Pulp & Paper Industry
Power Plant Industry
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