Hastelloy
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Hastelloy Alloys Grades
Hastelloy Alloys Products
Hastelloy Alloys Standards
ASTM B575
ASME SB 575
*As a professional manufacturer, our Hastelloy alloys are produced as per the standard.
Hastelloy Alloys Resources

Hastelloy Alloy C-276 vs Nickel Alloy 20
Whether you are a supplier or a end user of alloys, you may face challenges when deciding between Hastelloy C-276 and nickel alloy 20 or advising customers on material selection.

Hastelloy Alloys: Composition, Properties and Applications
Hastelloy alloy is a widely used superalloy known for its outstanding resistance to high temperatures and corrosion. It comes in various grades, each with a distinct chemical composition. You might

Differences among Hastelloy Alloy B, B-2 and B-3
Hastelloy B, Hastelloy B-2, and Hastelloy B-3 are three high-performance alloys known for their exceptional corrosion resistance. You might be wondering: How are they related? What are the differences in

Inconel Alloy 625 vs Hastelloy Alloy C-276
Both Inconel 625 and Hastelloy C-276 are nickel-chromium-molybdenum-based alloys known for their excellent corrosion resistance and high strength. Inconel 625 contains more chromium, whereas Hastelloy C-276 has a higher molybdenum

Hastelloy Alloy C-22 vs Hastelloy Alloy C-276
Hastelloy C-22 and Hastelloy C-276 are both high-performance alloys, which are widely used in corrosive applications in extreme environments. They play a crucial role in industries such as chemical processing,
Need An Expert To Customized Your Hastelloy Alloys?
Hastelloy Alloys: The Ultimate Guide
Hastelloy is a very common superalloy. It is characterized by its excellent resistance to high temperatures and corrosion. Depending on the chemical composition, Hastelloy is classified into various grades. You may have questions:
What is the Hastelloy alloys application?
What is the difference between Hastelloy and other superalloys?
Why are Hastelloy alloys classified into so many grades?
When you choose to buy quality Hastelloy alloys, there have some important points we need to know before we get started.
What are Hastelloy Alloys?
Hastelloy C276 is a nickel-molybdenum-chromium superalloy with an addition of tungsten designed to have excellent corrosion resistance in a wide range of severe environments.
The high nickel and molybdenum contents provide good corrosion resistance in reducing environments, while the chromium content provides resistance to oxidizing media.
Features of Hastelloy Alloys
1. Superior Corrosion Resistance:
Hastelloy stands out among metal materials for its exceptional resistance to corrosion in harsh environments, including strong acids, bases, and various organic solvents.
2. Outstanding High-Temperature Performance:
Hastelloy maintains excellent mechanical properties and stability at high temperatures, making it suitable for use in high-temperature settings such as aerospace and automotive industries.
3. Excellent Machinability:
Unlike other hard-to-machine metals, Hastelloy is easy to process, weld, and heat-treat, which reduces manufacturing challenges and costs.
4. Versatile Applications:
With its superior corrosion resistance, high-temperature strength, and good processing characteristics, Hastelloy is widely utilized in the chemical, oil and gas, aerospace, and automotive industries.
5. Consistent Long-Term Performance:
Hastelloy maintains stable performance over long periods in various complex environments, ensuring the reliability of equipment and systems.
In summary, Hastelloy’s remarkable advantages, including superior corrosion resistance, high-temperature performance, excellent machinability, versatile applications, and consistent long-term performance, make it a crucial material in the industrial sector.
Types and Grades of Hastelloy Alloys
Hastelloy is a family of nickel-based superalloys that incorporate molybdenum. Nickel imparts excellent high-temperature resistance to the alloy, while chromium and molybdenum enhance its overall corrosion resistance. Additional elements contribute unique properties to the alloy, further optimizing its performance in various applications.
Composition | Content Range | Effect | Typical Alloy |
---|---|---|---|
Nickel | 37% ~ 80% | High Temperature Resistance | Hastelloy N |
Chromium | 4% ~ 35% | Corrosion Resistance | Hastelloy G-35 |
Molybdenum | 4% ~ 32% | Corrosion Resistance, Strength | Hastelloy B-3 |
Cobalt | 0% ~ 5% | High Temperature Resistance | Hastelloy X |
Tungsten | 0% ~ 4.5% | Strength | Hastelloy C-276 |
Copper | 0% ~ 1.9% | Corrosion Resistance | Hastelloy C-2000 |
Hastelloy Alloys Chemical Compositions Comparison Table:
Alloy Grade | Cr% | C% | Co% | W% | Mo% | V% | Ai% | Ti% | Nb % | Fe% | Cu% | Ni% | Other % |
Alloy B | 0.60 | 0.1 | 1.25 | – | 28 | 0.3 | – | – | – | 5.5 | – | balance | Mn 0.80; Si 0.70 |
Alloy B-2 | 1.00 | 0.02 | 1 | – | 26.0-30.0 | – | – | – | – | 2 | – | balance | Mn 1.0, Si 0.10 |
Alloy C-276 | 14.0-16.5 | 0.02 | 2.5 | 3.0-4.5 | 15.0-17.0 | 0.35 | – | – | – | 4.0-7.0 | – | balance | Mn 1.0; Si 0.05 |
Alloy X | 22.00 | 0.1 | 1.5 | 0.6 | 9 | – | – | 18.5 | – | – | – | balance | Mn 0.6; Si 0.60 |
Alloy C | 16.00 | 0.07 | 1.25 | 40 | 17 | 0.3 | – | – | – | 5.75 | – | balance | Mn 1.0; Si 0.70 |
Alloy C-4 | 14.0-18.0 | 0.015 | 2 | – | 14.0-17.0 | – | – | 0..70 | – | 3 | – | balance | Mn 1.0 ; Si 0.08 |
Alloy N | 7.00 | 0.06 | 0.25 | 0.2 | 16.5 | – | – | – | – | 3 | 0.1 | balance | Mn 0.40; Si 0.25; B 0.01 |
Alloy S | 15.50 | 0.02 | 2 | 1 | 14.5 | 0.6 | 0.2 | – | – | 3 | – | balance | Mn 0.50; Si 0.40; B0.0009; La 0.02 |
Alloy F | 22.00 | 0.02 | 1.25 | 0.5 | 6.5 | – | – | – | 2.1 | 21 | – | balance | Mn 1.50; Si 0.50 |
Alloy G | 21.0-23.5 | 0.05 | 2.5 | 1 | 5.5-7.5 | – | – | – | 1.7-2.5 | 18.0-21.0 | 1.5-2.5 | balance | Mn 1.0-2.0; P0.04; Si 1.0; |
Alloy G-2 | 23.0-26.0 | 0.03 | – | – | 5.0-7.0 | – | – | 0.70-1.50 | – | balance | 0.70-1.20 | 47.0-52.0 | Mn 1.0; Si 1.0 |
Alloy W | 5.00 | 0.06 | 1.25 | – | 24.5 | – | – | – | – | 5 |
Mechanical Properties of Hastelloy Alloys
Superalloys can be categorized into solid solution strengthened alloys and precipitation strengthened alloys based on their crystal phase structure. Precipitation strengthened alloys exhibit higher strength, while solid solution strengthened alloys offer better plasticity.
Unlike Monel, Inconel, and Incoloy alloys, most Hastelloy alloys are solid solution strengthened. While they may not achieve the same strength levels as precipitation strengthened alloys, Hastelloy alloys are relatively strong among solid solution strengthened alloys. This is largely due to the significant presence of molybdenum and tungsten in their composition.
The larger atomic radii of molybdenum and tungsten compared to nickel enhance the interatomic bonding forces, thereby increasing the alloy’s strength. Consequently, the higher the molybdenum and tungsten content, the stronger the Hastelloy alloy. For example, Hastelloy B, with approximately 30% molybdenum, possesses significantly higher hardness and strength than typical solid solution strengthened alloys.
A unique member of the Hastelloy family is Hastelloy C-22HS, the only precipitation strengthened alloy in this group. It can be significantly strengthened through aging treatment.
Grade | Density (g/cm3) | Melting Point (°C) | Tensile Strength (MPa) | Yield Strength (0.2 % Offset) (MPa) | Elongation (%) |
B-2 | 9.2 | 1370 | 760 | 350 | 40 |
B-3 | 9.2 | 1370 | 760 | 350 | 40 |
C-4 | 8.64 | 1350-1400 | 783 | 365 | 55 |
C-22 | 8.69 | 1399 | 690 | 310 | 45 |
C-276 | 8.89 | 1370 | 790 | 355 | 40 |
X | 8.22 | 1355 | 655 | 240 | 35 |
Applications of Hastelloy Alloys
Hastelloy metals and alloys are extensively utilized across various industries due to their superior mechanical properties. Their ability to withstand moderate to severe corrosion makes them ideal for applications in welding, aerospace engineering, and chemical processing.
With excellent resistance to stress corrosion cracking and non-oxidizing acids, Hastelloy alloys are employed in numerous applications, including:
- Stack liners
- Reaction vessels
- Heat exchangers
- Aircraft cabin heaters
- Transition ducts
Conclusion
Hastelloy superalloys are vital materials in numerous industries, prized for their exceptional corrosion resistance, high-temperature strength, and outstanding mechanical properties.
Their unique attributes make these alloys a reliable and versatile choice for various applications. Given their advantages, it is likely that their importance will continue to rise as new applications emerge in response to evolving technologies and industrial needs.
FAQs
What is the price of Hastelloy alloys?
Due to the high molybdenum content, the raw material price of Hastelloy alloy is higher than many nickel-based superalloys. Also, due to their high strength, Hastelloy alloys are more difficult to process, which further increases their price.
Is Hastelloy better than monel?
On the other hand, the nickel-chromium-molybdenum alloy Hastelloy excels in corrosive and high-temperature environments. It is highly regarded for its resistance to a broader range of corrosive chemicals compared to Monel, which is appreciated for its versatility.
Is Hastelloy a super alloy?
Yes, Hastelloy is considered a superalloy.
Superalloys are high-performance alloys that exhibit excellent mechanical strength, resistance to thermal creep deformation, good surface stability, and resistance to corrosion or oxidation.
Hastelloy fits these criteria due to its outstanding resistance to corrosion, ability to maintain strength at high temperatures, and excellent mechanical properties, making it suitable for use in demanding environments such as chemical processing, aerospace, and power generation industries.
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