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Hastelloy Fasteners

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Hastelloy Fasteners

ARK Stainless Inc. is a leading manufacturer and supplier of high-performance Hastelloy C22/C276 Fasteners, known for their exceptional resistance to corrosion, high strength, and reliability in aggressive environments. These fasteners are designed to withstand extreme conditions such as exposure to strong acids, seawater, and high-temperature environments. Hastelloy C22/C276 fasteners are ideal for critical applications in industries like chemical processing, nuclear power, pollution control, and aerospace, where high durability and dependability are essential.

We offer a diverse range of Hastelloy fasteners, including Hastelloy C22 and Hastelloy C276, each providing distinct advantages for various applications. Hastelloy C22 is renowned for its superior resistance to pitting, crevice corrosion, and stress corrosion cracking in a wide range of aggressive environments. Hastelloy C276 offers excellent resistance to a broader range of chemicals, making it perfect for high-stress applications in corrosive environments. Our Hastelloy fasteners are manufactured in compliance with international standards, including ASTM B564 / ASME SB564, ensuring top-tier quality and reliable performance.

Table of Contents

Chemical Composition of Hastelloy C22 / C276 Fasteners

Grade Ni C Mo Mn Si Fe P S Co Cr W V
Hastelloy C22 Balance 0.010 max 12.5-14.5 0.50 max 0.08 max 2-6 0.02 max 0.02 max 2.5 max 20-22.5 2.5-3.5 0.35 max
Hastelloy C276 Balance 0.01 max 15–17 1.0 max 0.08 max 4–7 0.04 max 0.03 max 2.5 max 14.5–16.5 3–4.5 0.35 max

Mechanical Properties Of Hastelloy C22 / C276 Fasteners

Grade Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
Hastelloy C22 8.69 g/cm3 1399 °C (2550 °F) Psi – 1,00,000, MPa – 690 Psi – 45000, MPa – 310 45 %
Hastelloy C276 8.89 g/cm3 1370 °C (2500 °F) Psi – 1,15,000 , MPa – 790 Psi – 52,000 , MPa – 355 40 %

Hastelloy C22/C276 Fasteners

Hastelloy C22/C276 Fasteners are widely used in various demanding industries, including chemical processing, nuclear power plants, pollution control, aerospace, and marine systems. These fasteners are highly valued for their superior resistance to a wide range of corrosive environments, including strong acids, seawater, and high-temperature conditions, making them ideal for critical applications that require outstanding durability and reliability.
To ensure the highest standards of quality, these fasteners undergo a comprehensive series of tests before delivery. These include mechanical testing, PMI testing, chemical analysis, flattening tests, micro and macro examinations, and IGC testing, among others. We provide all the necessary documentation and test certificates along with these fasteners, guaranteeing that our customers receive products that meet the most stringent requirements for performance and quality.


C22/C276 Hastelloy ASTM B574 Fasteners Equivalent Grades
STANDARD UNS WNR. EN JIS GOST OR
Hastelloy C22 N06022 2.4602 NiCr21Mo14W NW 6022 - -
Hastelloy C276 N10276 2.4819 NiMo16Cr15W NW 0276 ХН65МВУ ЭП760

Specification of Hastelloy Alloy Fasteners
  • Specification: ASTM B574 / ASME SB574
  • Dimension: DIN, ISO, ASTM, JIS, BS, GB, IS and all International Standards
  • Size Range: M3 - M56 | 3/6" to 2" | Custom Sizes
  • Length: 3 mm to 200 mm
  • Types: Nuts, Bolts, Screws, Sockets, Studs, Screw, Hex Set Screw, Socket Screw, Cap Screw, Pan Head Screw, Machine Screw, Socket Head Cap Screw, Allen Cap Screw, Wing Screw, Washers, Spring Washers, Studs, Anchors, Marine Anchors, Nut, Hexagon Nut, Hex Nut, Hex Coupling Nut, Hex Domed Cap Nuts, Square Nut, Stud Bolts, Hex Head Bolts, Socket Hexagon Head Screw, Anchor Bolt, U-Bolts, J Bolts, Mushroom Head Square Neck Bolts, T-Head Bolts, Wing Screw, Eye Bolt, Foundation Bolts, Structural Bolts.