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Hastelloy C276 Washers are high-performance, corrosion-resistant fastener accessories designed for demanding chemical, marine, and industrial environments. Manufactured from Hastelloy C276, a nickel-molybdenum-chromium-iron alloy, these washers provide excellent durability and resistance to pitting, crevice corrosion, and stress corrosion cracking. Suppliers in Hamilton, New Zealand, such as Aria Fasteners, ensure precise dimensions, uniform thickness, and strict quality control. Hastelloy C276 Washers are ideal for distributing load, reducing surface wear, and providing secure fastening in conjunction with bolts, nuts, and studs in applications requiring superior corrosion resistance and long-term reliability.
Hastelloy C276 Washers are composed primarily of nickel, with molybdenum, chromium, iron, and tungsten, which enhance their chemical and corrosion resistance. Mechanically, they provide excellent toughness, dimensional stability, and load distribution under heavy clamping forces. Their alloy composition ensures resistance to oxidizing and reducing agents, localized corrosion, and stress corrosion cracking, making them suitable for use in highly aggressive chemical, petrochemical, marine, and pharmaceutical environments. Surface finishes or precise machining further enhance their performance under demanding conditions.
| 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 C276 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 C276 Fasteners | 8.89 g/cm3 | 1370 °C (2500 °F) | Psi – 1,15,000 , MPa – 790 | Psi – 52,000 , MPa – 355 | 40 % |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Hastelloy C276 washer is used in high temperature environments, such as chemical processing, air space, and marine applications. Ideal for use in reactors, heat exchangers and exhaust systems where resistance to oxidizing agents and extreme conditions are critical These washers are used in the oil and gas industry, the pulp and paper industry and the pharmaceutical industry to promote safe, reliable sealing of critical assembly equipment’s.
Hastelloy C276 Washers are widely used in chemical processing plants, offshore and marine structures, desalination facilities, and power generation systems. They are ideal for use with flanges, pipelines, pressure vessels, and critical machinery exposed to harsh chemicals, chlorides, or oxidizing environments. These washers prevent loosening, protect contact surfaces, and ensure long-term joint integrity and reliable performance. Hastelloy C276 Washers are also employed in pharmaceutical, food processing, and specialized industrial applications where superior corrosion resistance and mechanical strength are essential for safe and durable fastening solutions.
Aria Fasteners is a leading manufacturer and supplier of high-quality fasteners in Hamilton, New Zealand, with over 8 years of experience serving global industries.
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