Hastelloy Fasteners

Hastelloy Fasteners are premium high-performance fasteners manufactured from nickel-based superalloys engineered to deliver exceptional corrosion resistance in the most aggressive industrial environments. Known for their outstanding performance in chemical processing, marine, offshore, and high-temperature applications, Hastelloy fasteners are designed where conventional stainless steel and standard nickel alloys are not sufficient.

At The Industrial Mandate, we supply a comprehensive range of Hastelloy fasteners including bolts, nuts, socket screws, washers, threaded rods, and custom engineered fastening solutions for critical service conditions.

What are Hastelloy Fasteners?

Hastelloy fasteners are manufactured from a family of nickel-chromium-molybdenum alloys designed to withstand highly corrosive environments involving acids, chlorides, oxidizing and reducing chemicals. These alloys are known for their exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking, even under extreme chemical and thermal conditions.

Unlike standard stainless steel fasteners, Hastelloy fasteners maintain integrity in environments where exposure to aggressive chemicals such as hydrochloric acid, sulfuric acid, chlorine compounds, and seawater would typically cause rapid material degradation.

Key Properties of Hastelloy Fasteners

Exceptional Corrosion Resistance

Hastelloy alloys are engineered to resist both oxidizing and reducing environments, including strong acids and chloride-rich solutions, making them suitable for highly corrosive industrial processes.

Resistance to Stress Corrosion Cracking

These fasteners perform exceptionally well in chloride environments where austenitic stainless steels often fail due to stress corrosion cracking.

High Temperature Strength

Hastelloy fasteners retain mechanical strength and structural stability at elevated temperatures, making them suitable for heat exchangers, reactors, and high-temperature processing equipment.

Excellent Fabricability

Despite their high-performance characteristics, Hastelloy alloys are ductile and can be machined, welded, and fabricated into precision fasteners.

Types of Hastelloy Fasteners

We supply a complete range of fasteners manufactured from different Hastelloy grades:

  • Hastelloy Bolts
  • Hastelloy Nuts
  • Hastelloy Socket Head Cap Screws
  • Hastelloy Washers
  • Hastelloy Stud Bolts
  • Hastelloy Threaded Rods
  • Hastelloy Hex Head Bolts
  • Custom Hastelloy Machined Fasteners

These fasteners are available in standard metric and imperial sizes with various thread configurations.

Common Hastelloy Grades

Hastelloy C276 Fasteners

One of the most widely used grades, offering excellent resistance to both oxidizing and reducing corrosive media along with outstanding pitting and crevice corrosion resistance.

Hastelloy C22 Fasteners

Designed for superior resistance across a wide range of aggressive chemicals, including oxidizing acids and chloride environments.

Hastelloy B2 Fasteners

Optimised for strong reducing environments such as hydrochloric acid service, offering excellent resistance in non-oxidizing chemical conditions.

Hastelloy X and Other Grades

Used in high-temperature applications such as gas turbines and aerospace systems where oxidation resistance and strength are critical.

Standards and Specifications

Hastelloy fasteners are manufactured in compliance with internationally recognised standards such as:

  • ASTM B574
  • ASTM B462
  • ASTM F468
  • ASTM F467
  • ASME standards
  • DIN / ISO specifications

These standards ensure consistent mechanical properties, chemical composition, and dimensional accuracy for critical industrial applications.

Applications of Hastelloy Fasteners

Hastelloy fasteners are used in industries where failure is not an option due to extreme operating conditions:

  • Chemical processing plants
  • Petrochemical and refinery systems
  • Marine and offshore engineering
  • Pharmaceutical manufacturing
  • Pollution control systems
  • Heat exchangers and reactors
  • Oil and gas processing equipment
  • Pulp and paper industries

Their ability to withstand highly corrosive and mixed chemical environments makes them essential for critical infrastructure.

Why Choose The Industrial Mandate for Hastelloy Fasteners?

  • Wide range of Hastelloy grades and specifications
  • Manufactured to international ASTM and ASME standards
  • Designed for extreme chemical and marine environments
  • High reliability for mission-critical applications
  • Metric and imperial size availability
  • Global supply capability with consistent quality

At The Industrial Mandate, our Hastelloy fasteners are engineered for the most demanding industrial environments where corrosion resistance, strength, and long-term reliability are essential.