The article discusses the properties of two nickel-based alloy strips, Inconel 625 strip and Hastelloy C276 strip. Both alloys are composed of nickel, chromium, and molybdenum, providing them with outstanding corrosion resistance and strength.
However, there are distinct differences between the two. Inconel 625 contains a higher chromium content, whereas Hastelloy C276 has a higher molybdenum content, leading to variations in their corrosion resistance under different environmental conditions.
Today, we will delve into a comprehensive comparison of these popular nickel-based alloy strips – Inconel 625 and Hastelloy C276 – highlighting their similarities, disparities, and optimal applications in various scenarios.
Let’s keep reading.
What Is Inconel 625 Strip?
Inconel alloy 625 strip is one of the most versatile nickel alloys on the market. When it comes to corrosion resistance, strength, and fabricability, nickel alloy 625 strip is one of the best options for your application.
Inconel alloy 625 strips also referred to as the UNS N06625, W.Nr. 2.4856 refers to strong solution that has been strengthen by the presence on nickel making it have a high resistance to corrosion, great tensile strength, high oxidation and excellent fatigue properties.
Properties of this Inconel alloy 625 strips make it an excellent product for use in the manufacture of chemical equipment’s, aerospace structural parts, and aero-engine parts.
Inconel alloy 625 strips has a density of 8.44 g/cm³.
What Is Hastelloy C276 Strip?
Hastelloy C276 strip is a nickel-chromium-molybdenum super nickel alloy strip with an addition of tungsten designed to have excellent corrosion resistance in a wide range of severe environments.
This alloy is resistant to the formation of grain boundary precipitates in the weld heat-affected zone, thus making it suitable for most chemical process applications in an as welded condition.
The high chromium content provides the Hastelloy C276 strip good oxidation resistance in continuous service at temperatures up to 1500 Deg F (816 Degree).
Hastelloy C276 strip has exceptional resistance to a wide variety of chemical environments. Hastelloy C276 strip is used for components that must operate in corrosive conditions, such as chemical processing, waste management, and paper manufacturing systems.
Difference Between Inconel 625 Strip and Hastelloy C276 Strip
Inconel 625 Strip vs Hastelloy C276 Strip
Inconel 625 strip and Hastelloy C276 strip exhibit several significant distinctions:
- Chromium Content: Inconel 625 contains a higher percentage of chromium compared to Hastelloy C276.
- Resistance to Organic Acids: Inconel 625 demonstrates superior resistance to organic acids when compared to Hastelloy C276.
- Pitting and Crevice Corrosion: Inconel 625 offers better resistance against pitting and crevice corrosion than Hastelloy C276.
- Cost: Inconel 625 is more expensive than Hastelloy C276.
Chemical Composition
Hastelloy C276 Strip Chemical Composition
| % | Ni | Cr | Mo | W | Co | C | Mn | Si | P | S | Fe | V |
| Min | Balance | 14.5 | 15 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 |
| Max | Balance | 16.5 | 17 | 4.5 | 2.5 | 0.01 | 1 | 0.08 | 0.04 | 0.03 | 7 | 0.35 |
HASTELLOY® is a registered trademark of Haynes International, Inc.
Inconel 625 Strip Chemical Composition
Grade | Ni | Cr | Fe | C | Mn | Si | Mo | Co | Al | Ti | Nb + Ta | P | S |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Inconel 625 | 58.0 min | 20.0 – 23.0 | 5.0 max | 0.10 max | 0.50 max | 0.50 max | 8.0 – 10.0 | 1.0 max | 0.40 max | 0.40 max | 3.15 – 4.15 | 0.015 max | 0.015 max |
Inconel® 625 is a Registered Trademark of Special Metals Corporation and Its subsidiaries.
Features
Inconel 625 Strip Features:
High strength: Inconel Alloy 625 has excellent tensile strength and can withstand high-stress environments.
Corrosion resistance: Inconel Alloy 625 has outstanding resistance to corrosion and oxidation in a variety of environments, including seawater, acidic and alkaline solutions, and high-temperature gases.
Heat resistance: Inconel Alloy 625 retains its strength and toughness at high temperatures and is capable of withstanding extreme heat and thermal shock.
Weldability: Inconel Alloy 625 can be welded using a variety of methods, including gas tungsten arc welding, gas metal arc welding, and electron beam welding.
Versatility: Inconel Alloy 625 is used in a wide range of applications, including aerospace, chemical processing, marine engineering, and oil and gas production.
Hastelloy C276 Strip Features:
- Good weldability
- Has excellent corrosion resistance
- Resistant to stress corrosion cracking
- Resistant to oxidation
Costs
The costs of Inconel 625 strip and Hastelloy C276 strip differ significantly.
Inconel 625 is generally more expensive than Hastelloy C276.
The higher cost of Inconel 625 can be attributed to its higher percentage of chromium and other alloying elements, which contribute to its exceptional corrosion resistance and strength properties.
On the other hand, Hastelloy C276 offers excellent performance at a more affordable price point, making it a favorable option for certain applications where the highest level of corrosion resistance is not required, or cost considerations are a priority.
Therefore, the choice between the two alloys often depends on the specific requirements and budget constraints of the project or application at hand.
Applications
Inconel 625 Strip Applications:
Inconel 625 Alloy has a high level resistance against corrosion which makes it very common in the gas and oil industry. 625 alloys are also very popular in the aerospace industry.
- Aerospace
- Chemical Processing
- Heat Exchangers
- Construction
- Bridges
- Petrochemical Industry
- Ship Building
- Engineering
- General Structural Purposes
Hastelloy C276 Strip Applications:
Hastelloy C276 strips are used in a wide range of applications across multiple industries.
The most common uses for this alloy strip are in the chemical processing industry, but it is also frequently used for pollution control, pulp and paper industry, pharmaceuticals, specialty chemicals, pickling operations, nuclear fuel reprocessing, food processing and handling of radioactive waste.
The versatility of Hastelloy C276 strips makes it a popular choice with manufacturers as its durability and resistance to corrosion mean that it will be able to withstand the rigors of industrial processes without corroding or losing its structural integrity.
One of the most common uses of Hastelloy C276 strips is in the oil and gas industry where they are used in power generation plants to protect the turbines from damage due to corrosion.
They are also used in desalination plants where they can be relied upon to resist stress corrosion cracking.
Frequently Asked Questions
How To Choose The Right Hastelloy C276 Strip Supplier From China?
If you want to buy Hastelloy C276 strip for industrial usage, you should know, there are many suppliers and manufacturers produce alloy C276 strip and supply to many industries like heat exchanger or chemical industry.
But in fact, not all the suppliers have the ability to produce good quality products, some of them just choose cheaper materials but with high price which is not a good choice for users.
Here is a quick guide on how to choose a good Hastelloy C276 strip supplier.
- First, you should ask the manufacturer whether they can do the inspection themselves before delivery. Most of the large manufacturers have their own inspection team, they will strictly inspect all the goods before delivery.
- Second, you should ask if they use 100% pure raw material to produce your goods, because there are some suppliers use recycled raw material or mixed raw material which may cause problem during using.
- Third, it is better to visit their factory by yourself and check the production line and warehouse by yourself. It will be great if you can check their production process and production equipment. Because it is very important for you to know how they control the quality from process till delivery.
Inconel® 625 Strip Standards Comparison Table
| STANDARD | Inconel 625 |
| WERKSTOFF NR. | 2.4856 |
| UNS | N06625 |
Conclusion
Inconel 625 strip and Hastelloy C276 strip both exhibit excellent corrosion resistance, but their suitability in different environments sets them apart.
Inconel 625 is better suited for oxidizing environments, while Hastelloy C276 excels in reducing environments.
Choosing the optimal material depends on the specific application requirements, which must be carefully evaluated before making a decision.
At HZW, we are equipped to manufacture Inconel 625 strip and Hastelloy C276 strip products tailored to your exact specifications. Contact us today for your alloy strip project.
