Hastelloy C276

HASTELLOY C-276 alloy is a solid solution strengthened nickel-molybdenum-chromium alloy with a small amount of tungsten. Like other nickel alloys, it is ductile, easy to form and weld, and possesses exceptional resistance to stress corrosion cracking in chloride-bearing solutions.

Hastelloy C276 Specifications

Hastelloy C-276N102762.4819NiMo16Cr15WЭП760NW 0276B 622, B 619, B 626, B 575, B 574, B 366

Hastelloy C276 is a nickel-molybdenum-chromium super-alloy with an addition of tungsten designed to have excellent corrosion resistance in a wide range of severe environments. Alloy C276 has excellent corrosion resistance in both oxidizing and reducing environments.

Corrosion Resistance of Alloy C-276

Alloy C-276 hastelloy is resistant to stress corrosion cracking, general corrosion, crevice corrosion and pitting in a wide range of severe environments. Due to low carbon content, it minimizes carbide precipitation during welding to maintain resistance against intergranular attack in heat-affected zones of welded joints. 

Chemical composition


































Hastelloy C276 properties include excellent resistance to phosphoric acid-containing solution. C276 Hastelloy exhibits excellent resistance to corrosion by seawater especially under crevice conditions which induce attack in other commonly used materials such as 316 stainless steel, MONEL alloy 400, and INCONEL alloy 625.The hastelloy C 276 composition allows it to have exceptional resistance to sulfuric acid and hydrochloric acid. It opposes a large number of media experienced in chemical processing, including reducing and oxidizing acids, highly oxidizing, neutral, and acid chlorides, solvents, formic and acetic acids, acetic anhydride, wet chlorine gas, hypochlorites, and chlorine solutions.

INCONEL C-276 alloy or hastelloy is very helpful for flue gas desulfurization (FGD) systems to control air pollution from electric power plants. This alloy is also used for various applications including scrubbers, ducting and stack liners, stack-gas re-heaters, fans and fan housings. When we talk about alloy C276 vs hastelloy C276, alloy C276 is non-magnetic and is great for corrosion resistance, whereas hastelloy C276 contains molybdenum and is best for extreme chemical environments because of the hastelloy C276 composition.

Physical properties

GradeDensity (g/cm3)Melting Point °CCo-eff of Thermal Expansion (μm/m/°C)Thermal Conductivity (W/m.K)Specific Heat ( J/Kg.K)
Hastelloy C-2768.89137124-93°C7.20-100°C

HASTELLOY or UNS N10276 is known for its weldable property, which is defined as the ability of the material to be turned into a shape and to perform satisfactorily in certain service environments. That is why the cost of hastelloy C276 can be a little higher than other alloys available.

The welded component of the alloy should be given the most importance when determining a suitable weld procedure or process. If apt welding techniques and procedures will be followed, high-quality welds can be produced with the usual arc welding processes.

Hastelloy C276 material properties like high corrosion resistance and its good welding properties is mainly used in many industries such as Pollution control treatment, Chemical processing plant, Waste treatment plant, Marine engineering and Pulp and paper production etc. Hastelloy C276 suppliers offer hastelloy C276 pipe fittings and hastelloy C276 forgings along with C276 flanges and C276 plates.

Fabrication and Heat Treatment 

Alloy C-276 material can be forged, hot-upset and impact extruded. All of the common methods of welding can be used, although the oxyacetylene and submerged arc processes are not recommended when the fabricated item is for use in corrosion service.

HASTELLOY C-276 alloy can be hot forged, hot rolled, hot upset, hot extruded, and hot formed.  Although the alloy tends to work-harden, you can have it successfully spun, deep-drawn, press formed or punched.

However, it is more sensitive to strain and strain rates than the austenitic stainless steels, and the hot working temperature range is quite narrow. For example, Hot forming should be between 1600 and 2250°F (870 and 1230°C), with all heavy forming above 2000°F (1090°C). 

HASTELLOY C-276 alloy work hardens more readily than most austenitic stainless steels, and may require several stages of cold work, with intermediate anneals. INCONEL alloy C-276 is normally annealed at 2100-2150°F (1150-1175°C) and rapidly cooled such as by water quenching


HASTELLOY or UNS N10276 is known for their good weldability, and capable of being welded by the commonly used welding methods. The welded component should be given the utmost importance when determining a suitable weld process or procedure

If proper welding techniques and procedures are followed, high-quality welds can be produced with conventional arc welding processes. For corrosive applications this alloy is capable of being used in the “as-welded” condition without the need for more heat treatment.

INCO WELD filler metal and welding electrode 686CPT® can be used to “overmatch” INCONEL alloy C-276 where enhanced corrosion resistance is required.


Hastelloy C-276 with its high corrosion resistance and good welding properties is mainly used in many industries such as Pollution control treatment, Chemical processing plant, Waste treatment plant, Marine engineering and Pulp and paper production etc. 

Due to high levels of nickel, chromium, and molybdenum in alloy C-276 it makes the alloy resistant to sour environments even at high temperatures in deep wells. Hastelloy C276 density is also one of the major factors why hastelloy C276 tube fittings, hastelloy C276 pipe, hastelloy C276 round bar and hastelloy C276 tubing is popular. Hastelloy c 276 price varies for different items.

Various industries where the alloy is used are:

1: Off-Shore Oil Drilling Companies

2: Power Generation

3: Petrochemicals

4: Gas Processing

5: Specialty Chemicals

6: Pharmaceuticals

7: Pharmaceutical Equipment

8: Chemical Equipment

9: Sea Water Equipment

10: Heat Exchangers

11: Condensers

12: Pulp and Paper Industry

NOTE: Hastelloy C-276 is a registered trademark of Haynes International Inc.

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