Sayam Nickel Alloys, headquartered in Hyderabad, is a trusted manufacturer and supplier of high-quality Hastelloy Fasteners. Renowned for precision, durability, and reliability, these fasteners are engineered to perform under highly corrosive environments, extreme temperatures, and demanding industrial conditions. Hastelloy Fasteners from Sayam Nickel Alloys provide long-term strength and operational stability, making them ideal for critical industrial applications. Using advanced manufacturing techniques and strict quality control, every fastener meets international standards. Industries such as chemical processing, petrochemical, marine, and power generation rely on these fasteners for safe, efficient, and high-performance assembly in aggressive and high-temperature environments.
Hastelloy Fasteners are nickel-based alloys with compositions varying by grade (C-22, C-276, B-2, etc.), typically containing nickel, molybdenum, chromium, and iron. This composition provides exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking, even in highly aggressive chemical environments. Mechanically, these fasteners exhibit high tensile and yield strength, excellent toughness, and good ductility. Their ability to maintain structural integrity under thermal cycling and corrosive exposure ensures reliable performance, making Hastelloy Fasteners ideal for demanding industrial applications requiring both mechanical strength and superior chemical resistance.
| Specifications | ASTM B574 / ASME SB574 |
|---|---|
| Fasteners size | Bolt / Screw Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes Nuts Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes Washers Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes Machine Screws Size : M1.6 – M12 Self Tapping Screw Size : No.2 – No. 14 |
| Fasteners Length | 3 mm to 200 mm |
| Fastener Threads | UNF, BSW, BSF, METRIC, UNC or as required |
| Standard of High Nickel Alloy Fasteners | DIN : DIN 934, DIN 931, DIN 970, DIN 933 UTS : UNEF, NPT, UNC, UNS, UNF, NPTF ISO : JIS standards, ISO 4033, ISO 4032, ANSI – American National Standards Institute ASME B18.5 ANSI B 28.2.4 1M as per defined in ASME B16.5 standard Stud Bolt length ANSI B 18.2.4 2M as per defined in ASME B18.2.2 Hex nuts |
| Dimensions | DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3 |
| Surface Coating | Ptfe Coated High Nickel Alloy Fasteners Phosphate Coating Teflon Coating Zinc Coating Hot Dipped Galvanizing Coating Cadmium Coating Xylon Coating |
Fasteners Finishing | High Nickel Alloy : Self-Colour, Passivated, Bright Zinc Plated (BZP), Hot Dip Galvanised (HDG), High Nickel Alloy, Sherardized, some special one like DACROMET Geometry and Mechanically Applied coating ,Dacroment, nickel plated, anodizing, plated zinc-nickel Zinc (blue, black, yellow, white), black oxide. |
| Grade | C | Mn | Si | Co | S | Ni | Cr | Fe | Mo | W | V | P |
| Hastelloy Fasteners | 0.010 max | 1.0 max | 0.08 max | 2.5 max | 0.03 max | Bal | 14.5 – 16.5 | 4 – 7 | 15 – 17 | 3 – 4.5 | 0.35 max | 0.04 max |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Hastelloy Fasteners | 8.89 g/cm3 | 1370 °C (2500 °F) | Psi – 1,15,000 , MPa – 790 | Psi – 52,000 , MPa – 355 | 40 % |
At Sayam Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Hastelloy Fasteners in Hyderabad, India, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the India, allowing us to maintain a vast inventory of over 16,000 tons of premium-quality materials readily available in stock. We are dedicated to delivering superior products and services, ensuring reliability and excellence for our global clientele.
Contact us to get a quick quote for your requirement.
Hastelloy Fasteners are widely used in industries operating under extreme chemical and high-temperature conditions. They are essential in chemical processing, petrochemical, marine, and power generation applications for assembling high-pressure vessels, pumps, piping systems, and structural components exposed to aggressive media. Their outstanding resistance to pitting, crevice corrosion, and stress corrosion ensures long-lasting performance in extreme environments. Sayam Nickel Alloys’ Hastelloy Fasteners provide durable, reliable, and low-maintenance solutions, making them the preferred choice for engineers handling critical applications where operational safety, corrosion resistance, and high mechanical strength are paramount.
