Hastelloy fasteners are hardware components such as bolts, screws, nuts, washers, and studs made from Hastelloy, a group of nickel-based alloys known for their exceptional corrosion resistance and high strength in extreme environments. Hastelloy alloys are composed primarily of nickel, chromium, molybdenum, and other elements such as cobalt, iron, and tungsten, depending on the specific grade.
Specifications | ASTM B574 / ASME SB574 |
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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 % |
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We offer These Hastelloy Fasteners as per DIN, ISO, JIS or ANSI Standard.
Hastelloy fasteners are crucial in various industrial applications thanks to their exceptional corrosion resistance and high-strength properties. Commonly found in industries such as chemical processing, oil and gas, aerospace, marine, and pharmaceuticals, these fasteners are trusted to withstand harsh environments. In chemical processing plants, Hastelloy fasteners are utilized in equipment such as reactors, vessels, and pipelines, which resist corrosion from corrosive chemicals and acids.
Hastelloy fasteners are available in various alloys, such as Hastelloy C276, Hastelloy C22, Hastelloy B2, and Hastelloy X, offering different corrosion resistance levels, strength, and temperature stability.
Yes, Hastelloy fasteners maintain their mechanical properties at elevated temperatures and are suitable for use in high-temperature applications such as petrochemical processing, aerospace, and power generation.
Hastelloy fasteners can be welded using appropriate welding techniques and compatible filler materials, ensuring proper joint integrity and maintaining corrosion resistance.
Yes, Hastelloy fasteners exhibit excellent resistance to corrosion, including attack from acids, alkalis, chlorides, sulfides, and other corrosive chemicals, making them suitable for harsh environments.
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