Sayam Nickel Alloys is a trusted manufacturer and supplier of premium-quality Incoloy 825 stud bolts based in Hyderabad, India. We produce stud bolts that deliver exceptional performance in highly corrosive and high-temperature environments. Manufactured using certified raw materials and precision machining processes, our Incoloy 825 stud bolts ensure excellent strength, dimensional accuracy, and long service life. These fasteners comply with international standards and are widely supplied to industries such as oil and gas, chemical processing, petrochemical, marine, and power generation. Sayam Nickel Alloys is committed to quality consistency, competitive pricing, and timely delivery.
Incoloy 825 stud bolts are made from nickel, steel and chromium, with additional materials such as molybdenum, copper and titanium. These properties increase its corrosion resistance, especially in acidic and oxidizing environments. Bolts exhibit excellent mechanical properties including high tensile strength and rigidity, making them suitable for harsh conditions. Benefits of Incoloy 825 stud bolts include exceptional stress resistance that resists stress corrosion cracking, pitting, and crevice corrosion, and ensures durability in hazardous chemical environments, such as oil, gas, marine in, and in the chemical industry
Material | Specification | Standards | Size | Length |
Incoloy Alloy 825
| IS BS ASTM | ASTM B425 | 3 mm | M02 to M33 |
| Ni | Cr | Fe | Mo | Ti | Al | Si | Cu | Mn | C | B | |
| MIN | 38.0 | 1.5 | – | 2.5 | 0.6 | – | – | 19.5 | – | – | – |
| MAX | 46.0 | 3.0 | – | 3.5 | 1.2 | 0.2 | 0.5 | 23.5 | 1.0 | 0.05 | – |
| Tensile (ksi) | 85 |
| .2% Yield (ksi) | 30-35 |
Incoloy 825 is a nickel-iron-chromium alloy alloyed with molybdenum, copper, and titanium, offering outstanding resistance to corrosion and stress corrosion cracking. High nickel content provides excellent toughness and structural stability, while chromium improves oxidation resistance. Molybdenum enhances resistance to pitting and crevice corrosion, and copper offers superior resistance to acidic environments. Titanium stabilizes the alloy against intergranular corrosion. Incoloy 825 stud bolts exhibit good tensile and yield strength, high ductility, and reliable performance under elevated temperatures and pressure.
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Incoloy 825 stud bolts are widely used in bolted joints exposed to aggressive chemicals, high pressure, and extreme operating conditions. Common applications include oil and gas pipelines, chemical processing plants, petrochemical refineries, offshore platforms, and marine equipment. These stud bolts are also used in heat exchangers, pressure vessels, flanged connections, and power generation systems. Due to their excellent resistance to sulfuric and phosphoric acids, chloride-induced corrosion, and thermal stress, Incoloy 825 stud bolts are ideal for critical fastening applications requiring long-term reliability, safety, and minimal maintenance.
