Introduction to Hastelloy

Hastelloy is a nickel-based steel alloy that is extremely corrosion resistant. Hastelloy has a unique combination of properties that make it far more corrosion-resistant than ordinary alloys. The Hastelloy family of chromium/nickel/molybdenum alloys is well suited in extremely hostile chemical environments at elevated temperatures.


Hastelloy’s Properties

  • Outstanding corrosion resistance and high-stress resistance
  • Excellent resistance to stress corrosion cracking
  • Acid resistance is high.
  • Ease of fabrication Ease of welding
  • High oxidation resistance (at high temperatures)

This alloy is primarily composed of nickel, with small amounts of additional metals like chromium and molybdenum. Tungsten, carbon, titanium, aluminium, manganese, copper, cobalt, chromium, and other chemical components are mixed with basic ingredients in a complex manufacturing process. Chemical processing, aerospace, and pharmaceutical sectors are just a few of the industries that use Hastelloy.


Applications of Hastelloy

Hydrochloric acid, aluminium chloride catalysts, and other strongly reducing chemicals are all resistant to this material. Inert and vacuum atmospheres provide excellent high-temperature strength.

Hastelloy B2 is a nickel-molybdenum alloy that is especially well suited for equipment exposed to decreasing chemical conditions. Sulfuric, phosphoric, hydrochloric, and acetic acid have been used in the chemical process sector. Depending on the environment, temperatures might range from ambient to 1500°F.


Hastelloy Grades

  • Hastelloy C276
  • Hastelloy C22
  • Hastelloy B2
  • Hastelloy B3
  • Hastelloy X


Fabrication of Hastelloy

Forging, hot-upsetting, and impact extrusion are all options for Hastelloy. Even though the alloy tends to work-harden, it may be spun, deep-drawn, press shaped, or punched satisfactorily. All typical welding procedures can be employed, albeit oxyacetylene and submerged arc processes are not suggested when the manufactured object will be exposed to corrosion.


What is Stainless steel, and what’s the difference between Hastelloy and Stainless steel?

Stainless steel is a steel alloy that has a high amount of chromium. By weight, this alloy typically comprises around 10.5 per cent chromium and 1.2 per cent carbon. As a result, it possesses excellent corrosion resistance. The corrosion resistance increases as the chromium level rise. Furthermore, adding a small amount of molybdenum to this mixture can improve acid resistance. Sheets, plates, bars, wires, tubes, and other stainless steel products are available.

The main distinction between Hastelloy and stainless steel is that Hastelloy has superior corrosion resistance versus stainless steel.

Alloys are chemical mixes that include metals as the primary component and nonmetals as a minor component. Hastelloy and stainless steel are two such alloys with outstanding corrosion resistance. On the other hand, Hastelloy is said to be more effective for corrosion resistance than stainless steel due to its unique composition, which contains more nickel. 

Hastelloy is used in industries like chemical processing, aerospace, and pharmaceuticals When it comes to these materials. In Contrast, Stainless steel is used in architecture, plumbing, pulp and paper, chemical processing, food and beverage processing, etc.

Hastelloy is a nickel-based alloy with exceptional corrosion resistance, whereas stainless steel is a steel alloy with a high chromium concentration and, as a result, excellent corrosion resistance. Furthermore, the main distinction between Hastelloy and stainless steel is that Hastelloy has superior corrosion resistance to stainless steel. Furthermore, Hastelloy is mostly composed of nickel, chromium, and molybdenum, whereas stainless steel is primarily composed of iron, chromium, and carbon.

When dealing with an extremely corrosive product and stainless steel is not deemed suitable for the process, Hastelloy is usually the best alternative.


Why is Hastelloy expensive?

Because of their composition, Hastelloy materials are more expensive than stainless steel or Monel because although the fundamental reason for the price is the use of raw materials, the production procedures for Hastelloy are very advanced, which adds to the cost.



Understanding the proper Hastelloy grades, properties, and types for specific uses and environments is essential for ensuring long-lasting results and optimizing costs. Whether you’re looking for something strong and corrosion-resistant for marine environments or something stunning and easy to clean for restaurant use, there’s a Hastelloy available to suit your needs.

Prashant Steel and Alloys cater to your needs and specifications and bring you the best in the market. For more information, you can visit our website and read other articles to gain a deeper knowledge of our industry and choose the right form of steel for your business. 


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