All You Need to Know About Hastelloy B3 Forgings

When it comes to materials used in the forging industry, Hastelloy B3 is one of the most sought-after. It has excellent resistance to corrosion in a variety of different environments, making it an excellent choice for a wide range of applications. In this blog post, we’ll be taking a closer look at Hastelloy B3 forgings, exploring its properties, advantages and typical applications.

What is Hastelloy B3 Forgings?

Hastelloy B3 Forgings, commonly known as “Alloy B3” or “Hastelloy B-3®,” is a nickel-molybdenum alloy that provides excellent resistance to hydrochloric acid and other highly corrosive environments. Its high nickel content helps to protect it from chloride stress corrosion cracking, while its molybdenum content strengthens the alloy against pitting and localized corrosion. Additionally, Hastelloy B-3® provides good resistance in oxidizing atmospheres up to 2000°F (1093°C). It is often used for industrial applications such as valve bodies, fasteners, pumps, and steam generators. The superior strength of this alloy makes it ideal for use in parts subjected to extreme pressure or wear and tear applications such as pins and bushings. With its excellent formability under cold and hot working processes and superior weldability properties in all conditions, Hastelloy B-3® forgings offer unparalleled performance with virtually no limitation of application options!

All You Need to Know About Hastelloy B3 Forgings


Properties of Hastelloy B3 Forgings:

Hastelloy B3 is a nickel-molybdenum alloy that contains chromium, iron and other trace elements. This alloy is known for its excellent resistance to stress corrosion cracking, pitting and crevice corrosion. It also demonstrates exceptional resistance to acetic and phosphoric acids and other chemical compounds. The high nickel content of Hastelloy B3 gives it excellent ductility, and it can be easily forged and welded.

Advantages of Hastelloy B3 Forgings:

One of the key advantages of Hastelloy B3 Forgings is its excellent corrosion resistance. This property makes it a popular choice for applications requiring resistance to various corrosive environments. It is also used in applications where high temperatures are a factor, as it can withstand temperatures up to 1,500 degrees Fahrenheit. Other benefits of Hastelloy B3 forgings include its ease of fabrication, good weldability, and excellent resistance to stress corrosion cracking.

Applications of Hastelloy B3 Forgings:

Hastelloy B3 is used in various applications, including chemical processing, pollution control, paper and pulp production, and nuclear waste processing. It can also be found in heat exchangers, valves, pumps, and fittings. It is particularly popular in environments where corrosion is a threat, such as in the presence of strong acids, chlorides, and reducing agents.

Forging Hastelloy B3:

Hastelloy B3 can be easily forged using either an open-die or closed-die forging process. The alloy has good forge ability, but care should be taken to avoid overheating, as this can result in reduced corrosion resistance. Forging temperatures for Hastelloy B3 typically range between 2100°F and 2300°F. After forging, the parts should be solution annealed at a temperature of 2000°F for 30 minutes before being quenched in water.

Maintenance of Hastelloy B3 Forgings:

Maintaining Hastelloy B3 forgings is relatively straightforward. Regular cleaning and inspection will help ensure that the parts continue to function correctly. In addition, Hastelloy B3 should not be exposed to temperatures above 1,500 degrees Fahrenheit for extended periods, as this can reduce its corrosion resistance properties.


In summary, Hastelloy B3 forgings are an excellent choice for applications requiring resistance to various corrosive environments. The alloy’s excellent corrosion resistance, as well as its ease of fabrication and good weldability, make it a popular choice in a variety of different industries. It is important to ensure that Hastelloy B3 forgings are forged correctly and maintained properly to ensure their continued performance. If you are considering Hastelloy B3 forgings for your next project, speak to a knowledgeable forging partner who can advise on the best materials and processes for your application.

All You Need to Know About Hastelloy B3 Forgings

by Renine Metalloys time to read: 3 min