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Hastelloy C276 is a nickel-molybdenum-chromium super alloy known for its exceptional corrosion resistance in a wide range of aggressive environments. This versatile alloy is widely used in various industries, including chemical processing, oil and gas, pharmaceuticals, and marine applications. Hastelloy C276 fasteners ensure the integrity and reliability of structures and equipment in these demanding environments.

Hastelloy C276 Fasteners primarily comprises nickel, molybdenum, and chromium, with tungsten additions and small amounts of iron and cobalt. This combination of elements provides outstanding resistance to corrosion, oxidation, and stress corrosion cracking. The alloy exhibits high strength and toughness even at elevated temperatures, making it suitable for challenging conditions.

The Key Properties of Hastelloy C276 Fasteners Include:

1. Corrosion Resistance: Hastelloy C276 Fasteners is renowned for its exceptional corrosion resistance in reducing and oxidizing environments. It can withstand attack from a wide range of corrosive media, including sulfuric acid, hydrochloric acid, acetic acid, and seawater.

2. High-Temperature Performance: The alloy maintains its mechanical properties at elevated temperatures, making it suitable for applications where heat resistance is crucial. It can be used in temperatures ranging from cryogenic to 1900°F (1038°C).

3. Weldability: Hastelloy C276 Fasteners is easily weldable using various welding techniques. This makes fabricating structures and equipment convenient, ensuring a strong and durable bond.

4.  Versatility: Due to its excellent properties, Hastelloy C276 Fasteners finds applications in various industries, including chemical processing, petrochemicals, power generation, pharmaceuticals, and pollution control.

Chemical Composition of Hastelloy C276 Fasteners

This table offers a comprehensive analysis of key components in the Chemical Composition of Hastelloy C276 Fasteners.












Hastelloy C276

0.010 max

1.00 max

0.08 max

0.03 max

2.50 max

50.99 min*

14.50 – 16.50

4.00 – 7.00

15.00 – 17.00

0.04 max

This table provides a summary of the essential Chemical Composition and performance aspects of Hastelloy C276 Fasteners.

Mechanical Properties of Hastelloy C276 Fasteners

This table provides an in-depth analysis of the essential elements in the mechanical properties of Hastelloy C276 fasteners.



Melting Point

Tensile Strength

Yield Strength (0.2%Offset)


Hastelloy C276

8.89 g/cm3

1370 °C (2500 °F)

Psi – 1,15,000 , MPa – 790

Psi – 52,000 , MPa – 355

40 %

The table about Hastelloy C276 fastener properties shows important material Features needed for high-performance uses.

Types of Hastelloy C276 Fasteners

1. Hastelloy C276 Bolts: These are fasteners with external male threads designed to be used with a matching nut for fastening applications.

2. Hastelloy C276 Nuts: Nuts are internally threaded fasteners designed to mate with bolts or screws to secure components together.

3. Hastelloy C276 Screws: These fasteners have a threaded shaft and are typically used to fasten two objects together by being inserted into pre-drilled holes.

4. Hastelloy C276 Studs: Studs are similar to bolts but lack a head. They are threaded on both ends and are often used for applications where a bolt and nut combination is impractical.

5. Hastelloy C276 Washers: Washers are thin plates with holes in the center. They are placed between a nut and a surface to distribute the load and prevent damage.

6. Hastelloy C276 Socket Products: These include socket head cap screws, socket set screws, and socket head shoulder screws, all of which feature a recessed driving surface for tightening with a hex key or socket wrench.

These types of Hastelloy C276 fasteners come in various sizes, grades, and configurations to suit application requirements. They are chosen for their excellent corrosion resistance, high strength, and reliability in demanding environments.

Applications of Hastelloy C276 Fasteners:

1. Chemical Processing Industry: Hastelloy C276 fasteners are extensively used in chemical processing plants where corrosive chemicals are handled. They ensure the reliability and safety of equipment such as reactors, vessels, and piping systems.

2. Oil and Gas Sector: Hastelloy C276 fasteners are employed in critical components exposed to corrosive environments in the oil and gas industry. This includes offshore platforms, pipelines, and processing equipment.

3. Marine Applications: The corrosion resistance of Hastelloy C276 Fasteners makes it suitable for marine applications, including shipbuilding and offshore structures, where exposure to saltwater is a constant challenge.

4. Pharmaceutical Industry: In pharmaceutical manufacturing, where stringent cleanliness and corrosion resistance are essential, Hastelloy C276 fasteners are used in equipment such as reactors and storage vessels.

Hastelloy C276 fasteners are crucial components in industries where corrosion resistance is paramount. Their ability to withstand aggressive environments and high-performance characteristics make them a preferred choice for critical applications. Whether in chemical processing, oil and gas, marine, or pharmaceuticals, Hastelloy C276 fasteners contribute to the longevity and reliability of industrial equipment and structures.

FAQ's for Hastelloy C276 Fasteners

Hastelloy C276 fasteners are a type of nickel alloy and corrosion-resistant fastener, making them ideal for use in chemical processing, marine engineering and other industrial applications where corrosion resistance is an important factor.

Yes, Hastelloy C276 can be supplied with various types of coatings including hot-dip galvanizing, black oxide, oiled or zinc plating. The selection of the coating depends on the requirements of the application and environment.

When ordering your Hastelloy C276 fasteners it is important to consider their tensile strength, yield strength and hardness as these will determine their overall strength and performance in certain applications.

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