Hastelloy C276 (Alloy N10276) Overview

Hastelloy C276, also known as alloy n10276, is a kind of high-performance nickel-molybdenum-chromium alloy. The Hastelloy C276 is mainly composed of nickel (about 57%), molybdenum (15-17%), chromium (14.5-16.5%), and a small quantity of iron, tungsten. It has outstanding corrosion resistance, high-temperature properties and mechanical strength. Therefore, it is widely applied in industrial areas including the chemical industry, petrochemical industry, flue gas desulfurization, pulp and paper industry, and environmental protection.

We are specialized in manufacturing a series of alloy materials including nickel-based alloys, high-temperature alloys, pure nickel, Hastelloy alloys, and precision alloys. Besides, we also produce their related series of steel pipes, pipe fittings, and pipeline products. Our products are widely applied in industries like petrochemical industry, oil wells and oil fields, hydrogen sulfide scenarios, shale gas, coal chemical industry, marine engineering, shipbuilding, boiler heat exchangers, aerospace, environmental protection equipment, machining, nuclear power, etc. For many years, the high-quality steel pipes and pipe fittings we manufacture have been in service for major shipyards and well-known enterprises in the fields of marine engineering, new energy, environmental protection equipment, etc. Please feel free to get in touch with us.

Hastelloy C276 (Alloy N10276) Equivalent Grades

Unified Digital Code	Alloy Grade	Previously Used Alloy Grades in China	United States	Germany
H01276	NS3304	00Cr15Ni60Mo16W5Fe5NS334	N10276(Inconel 276)	NiMo16Cr15W(W. Nr. 2.4819)

Hastelloy C276 (Alloy N10276) Features

1. Excellent corrosion resistance:

Hastelloy C276 offers excellent corrosion resistance to a wide range of aggressive media, including sulfuric acid, hydrochloric acid, and chlorine dioxide. In addition, it resists pitting, crevice corrosion, and stress corrosion cracking, making it an ideal choice for marine and offshore structures as well as high-pressure water systems.

2. Outstanding High-Temperature Resistance:

The chemical industry often operates under high-temperature conditions. Hastelloy C276 demonstrates excellent oxidation resistance at temperatures up to 1900°F (1038°C). It maintains its structural integrity and mechanical strength, remaining free from plastic deformation and failure.

3. Good Mechanical Characteristics:

Hastelloy C276 is well-known for its excellent mechanical properties, including high strength, toughness, and malleability. Its tensile strength is 780 MPa, yield strength is 355 MPa, and its hardness is approximately 220 Brinell.

4. Excellent Physical Properties:

Hastelloy C276 possesses outstanding physical properties. It has a density of 8.89 g/cm³ and a melting point between 1370 and 1400°C. The alloy’s coefficient of thermal expansion is 12.5μm/m℃, while its specific heat capacity is 427 J/kg°C. Such properties make it a thermally stable material, even under harsh conditions.

5. Good Machinability and Weldability:

Hastelloy C276 offers good machinability and weldability. It can be cold worked, such as in sheet metal processing and cutting, and hot worked through methods like hot press forming and forging. Additionally, it can be easily welded to other materials, making it suitable for the diverse and complex manufacturing needs of chemical equipment.

Hastelloy C276 (Alloy N10276) Application

The nickel-based alloy C276 produced by us has excellent properties and a wide range of applications, playing an important role in modern industry. It is widely used in petrochemical industry, marine engineering, shipbuilding, boiler heat exchangers, aerospace, environmental protection equipment, etc. Let’s take a look together.

1. In the petrochemical field

Hastelloy C276 that we offered is often used to manufacture key equipment such as reactors, heat exchangers, and pipeline systems. Such equipment works in harsh environments with high temperature, pressure, and corrosive media. C276’s superior properties help ensure long-term safety and lower maintenance costs.

2. In the Field of Marine Engineering

The marine engineering environment features high salinity, high humidity, and strong corrosiveness. Hastelloy C276 shows excellent corrosion resistance in seawater and salt mist environments, And it is widely applied in fields like offshore platforms, submarines, and seawater desalination facilities. Therefore, its excellent performance in resisting pitting and crevice corrosion makes it an essential material selection in the marine engineering sector.

3. In the aerospace industry

Hastelloy C276 that we produce is often used in the manufacture of high-temperature structural components such as turbine engine parts and combustion chamber liners, These components work under extreme temperature and pressure conditions, requiring materials with superior creep resistance and high-temperature strength. The application of C276 significantly improves engine efficiency and extends service life.

4. In the pulp and paper industry

In the pulp and paper industry, for example, cooking and bleaching containers; scrubbing towers in the FGD system, reactors for re-acidic products; sulfuric acid condensers; methylene diphenyl isocyanate (MDI); the production and processing of impure phosphoric acid.

5. In the pharmaceutical industry

Hastelloy C276, as one of the main materials for pharmaceutical equipment, is widely used in the manufacturing of pharmaceutical reaction kettles, towers and other equipment.

6. In other application fields

a. Scrubbers, reheaters, wet gas fans, etc. in the FGD system.
b. Equipment and components operating in an acidic gas environment.
c. Reactors for acetic acid and acidic products.
d. Sulfuric acid condensers.
e. Methylene diphenyl diisocyanate (MDI).
f. Production and processing of impure phosphoric acid.