Hastelloy fastenersare hardware parts like bolts, screws, nuts, washers, and studs manufactured from Hastelloy, a family of nickel-based alloys recognized for their outstanding corrosion resistance and high strength in extreme conditions. Hastelloy alloys consist mainly of nickel, chromium, molybdenum, and additional elements like cobalt, iron, and tungsten, varying by the particular grade.
| 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 Koasteel, we’re proud to be the largest supplier and manufacturer in the New Zealand, delivering advanced solutions for every one of your piping requirements. With cutting-edge manufacturing facilities strategically situated in the New Zealand, we maintain an extensive stock of more than 25,000 tons of top-quality materials on hand and ready to ship.
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We supply these Hastelloy Fasteners in accordance with DIN, ISO, JIS or ANSI Standard.
Hastelloy fasteners play a vital role in numerous industrial applications owing to their outstanding corrosion resistance and high-strength characteristics. Frequently used across sectors like chemical processing, oil and gas, aerospace, marine, and pharmaceuticals, these fasteners are relied upon to endure demanding conditions. Within chemical processing plants, Hastelloy fasteners serve in equipment including reactors, vessels, and pipelines, where they resist corrosion caused by aggressive chemicals and acids.
Hastelloy fastenersare offered in a range of alloys, including Hastelloy C276, Hastelloy C22, Hastelloy B2, and Hastelloy X, providing varying degrees of corrosion resistance, strength, and temperature stability.
Yes, Hastelloy fasteners retain their mechanical properties at high temperatures and are well-suited for use in high-temperature applications such as petrochemical processing, aerospace, and power generation.
Hastelloy fastenerscan be joined through suitable welding methods and matching filler metals, guaranteeing sound joint strength and preserving resistance to corrosion.
Yes, Hastelloy fasteners show outstanding corrosion resistance, including protection against attack from acids, alkalis, chlorides, sulfides, and other corrosive chemicals, making them well-suited for harsh environments.
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