Hastelloy C 276
Table of Contents
1. Introduction
1.1 Hastelloy C-276 Overview
Hastelloy C276, also known as UNS N10276, is a nickel-based alloy known for its outstanding resistance to rust and corrosion. It works extremely well against harmful substances like acids and salts.
This makes it ideal for sectors requiring durable materials in challenging environments. Engineers form the Hastelloy alloy by combining nickel, molybdenum, chromium, and tungsten. Its notable feature is Hastelloy C’s capacity to withstand pitting and cracking when under stress.
This makes c 276 alloys perfect for industries like chemical processing, energy production, and marine environments. In these places, high temperatures and strong chemicals are common.
1.2 Applications Overview of Hastelloy C276
Hastelloy C-276 stands out for its excellent resistance to corrosion and cracking. Many industries widely use it, especially where chemicals like hypochlorites, chlorides, and ferric salts exist. The alloy performs well in both hot and corrosive conditions, making it ideal for power plants and industrial equipment.
2. Chemical Composition and Structure of Hastelloy C-276
2.1 Hastelloy c276 Composition
Table – Chemical Composition of Hastelloy C-276
| Element | Composition (%) |
|---|---|
| Nickel | Balance |
| Molybdenum | 15.0 - 17.0 |
| Chromium | 14.5 - 16.5 |
| Iron | 4.0 - 7.0 |
| Tungsten | 3.0 - 4.5 |
| Cobalt | 2.5 max. |
| Manganese | 1.0 max. |
| Carbon | 0.01 max. |
| Vanadium | 0.35 max. |
| Phosphorus | 0.04 max. |
| Sulfur | 0.03 max. |
| Silicon | 0.08 max. |
Density of Hastelloy C276: 0.321 pounds per cubic inch
Hastelloy C-276 has unique features that make it different from other Hastelloy alloys. These features help it perform better in tough conditions. Here are some key aspects of Hastelloy C-276 composition within the broader context of Hastelloy alloys:
- Nickel as the Primary Base:Like all Hastelloy alloys, Hastelloy C-276 is primarily based on nickel. This high nickel content (at least 57%) makes the alloy resistant to corrosion. This is especially true in harsh chemical environments.
- High Molybdenum and Chromium Content:One of the defining features of Hastelloy C-276 composition is its significant content of molybdenum (15-17%) and chromium (14.5-16.5%). These elements resist pitting, crevice corrosion, and other types of localized corrosion. This makes Hastelloy C-276 great for use in environments with sulfuric acid, hydrochloric acid, and other harsh chemicals.
- Tungsten for Enhanced Corrosion Resistance:Adding tungsten (3-4.5%) to the alloy helps it resist corrosion. This is true in both oxidizing and non-oxidizing conditions. Tungsten is important for making materials stable in high-temperature and high-stress situations. These conditions are common in chemical processing and power generation.
- Iron Content:Iron (4-7%) is present in Hastelloy C-276 to enhance the alloy’s mechanical properties and reduce the cost of production. It also helps to improve the overall strength of the material. However, it does not greatly change the alloy’s resistance to corrosion.
- Trace Elements:Hastelloy C-276 may have small amounts of other elements, each less than 1%. These elements can improve the alloy’s properties, such as weldability, ductility, and thermal stability.
Hastelloy C-276’s composition of nickel, molybdenum, chromium, and tungsten gives it strong corrosion resistance, high-temperature durability, and great strength, making it perfect for demanding applications.
2.2 Microstructure and Properties of Hastelloy C-276
Hastelloy C-276 has grain boundaries that help it stay strong under pressure. This microstructure keeps the alloy from cracking in tough environments. The alloy can handle both high and low temperatures. This makes it a great choice for parts that face frequent stress.
3. Mechanical Properties of Hastelloy C-276
Hastelloy C276 material properties are as follows:
3.1 Hardness and Strength
| Property | Value |
|---|---|
| Tensile Strength (MPa) | 690 min |
| Yield Strength (MPa) | 283 min |
| Elongation (%) | 40 min |
| Hardness (HRB) | 95 max |
Hastelloy C-276 has excellent mechanical properties, such as high tensile strength and resistance to bending. It resists cold working, which is important for forming or shaping the material. The alloy also shows minimal wear, ensuring it performs well under constant movement or pressure.
3.2 Wear and Fatigue Resistance
The alloy resists fatigue effectively, especially in corrosive environments, thanks to its strong microstructure and excellent weldability. Hastelloy C-276 is also highly resistant to stress corrosion cracking when exposed to cyclic stresses, making it a dependable choice for demanding applications.
4. Corrosion Resistance of Hastelloy C-276
4.1 Chemical Corrosion Resistance
Hastelloy C-276 is exceptionally resistant to many corrosive substances. This is because of its high levels of molybdenum and tungsten. It resists damage from sulfuric acid, hydrochloric acid, and hydrogen chloride. It also provides great protection in environments with chlorine and other damaging chemicals.
4.2 High-Temperature Resistance
The alloy stays strong at high temperatures. This helps it work well in industries with high heat, like power plants and aerospace.
5. Major Applications of Hastelloy C-276
5.1 Chemical Processing and Petrochemical Industries
Hastelloy C-276 is a popular choice for chemical reactors, piping systems, and heat exchangers. This is because it resists corrosion and pitting. Industries that handle harsh chemicals often use it.
5.2 Energy Sector
In power generation, particularly in systems that remove sulfur from gases, Hastelloy C-276 is highly effective. Its ability to handle high-temperature corrosion makes it ideal for waste-to-energy plants.
5.3 Food Processing and Pharmaceuticals
The food processing and pharmaceutical industries use Hastelloy C-276. It makes equipment that resists acidic and alkaline substances.
5.4 Aerospace and Marine Applications
Engineers use Hastelloy C-276 in marine environments because it resists seawater corrosion. Ideal for use in components like valves and pipes in seawater desalination systems. Also useful in aerospace applications because of its ability to handle extreme conditions.
6. Machining and Welding of Hastelloy C-276
6.1 Machining Characteristics of Hastelloy C 276
You can machine Hastelloy C-276, but you need special tools because of its hardness. Preventing work hardening when machining the material is important.
6.2 Welding Performance
You can weld Hastelloy C-276 using techniques like gas tungsten arc welding and shielded metal arc welding. Careful control of the temperature during welding is crucial to prevent cracking, especially when dealing with complex shapes.
7. Market and Supply Chain
7.1 Global Key Suppliers of Hastelloy C276
Major suppliers of Hastelloy C-276 include Haynes International and Special Metals. These suppliers offer a wide range of products and ensure global delivery.
7.2 Supply Capacity and Export Trends in China
China has become a major producer and exporter of Hastelloy C-276. Chinese suppliers offer cost-effective production methods while maintaining high-quality standards. However, issues such as timely delivery and quality control are important to consider.
7.3 Price Trends and Purchasing Advice of Hastelloy C276
The price of Hastelloy C-276 is generally stable but can fluctuate based on market demand and raw material prices. Thinking about the density of Hastelloy C-276 is important when estimating shipping costs. The weight of the material impacts transportation expenses.
8. Products Available in the Market
8.1 Common Forms of Hastelloy C-276
Hastelloy C-276 is available in various forms, such as bars, sheets, plates, and pipes. Each form meets different industry needs.
8.2 Selection of Products Based on Application
Choosing the right form of Hastelloy C-276 is crucial for ensuring optimal performance. Factors like temperature, strength, and the operating environment will determine which product form is best.
9. Export Capabilities of SOUTHERLY ALLOY
9.1 Company Overview
SOUTHERLY ALLOY specializes in providing high-quality Hastelloy C-276 and other corrosion-resistant alloys. We offer a wide variety of products, ensuring that we meet the needs of customers across the globe.
9.2 Export Capabilities
SOUTHERLY ALLOY has a well-established export network serving clients in the Americas, Europe, Asia, and the Middle East. We prioritize timely delivery and high-quality service.
9.3 Hastelloy C-276 Pipe Inventory
Press xxxx for details.
9.4 Quick Production for Out-of-Stock Sizes
For sizes not currently in stock, SOUTHERLY ALLOY offers quick production and delivery to meet specific customer needs.
10. Conclusion
10.1 Summary of Key Advantages of Hastelloy C276
Hastelloy C-276 is an excellent material with strong resistance to corrosion, high temperatures, and stress cracking. Its durability makes it ideal for applications in chemical processing, power generation, and aerospace.
10.2 Future Trends
As the need for corrosion-resistant materials increases, Hastelloy C-276 will remain an important material in many industries. Ongoing developments in production methods and alloy processing will help meet the evolving needs of these industries.
11. Contact Form
As a Professional Nickel Alloy & Stainless Steel Pipes and Tubes Exporter, Southerly Alloy was founded in Dec-2021.Our core members have more than 5 years experience in Nickel Alloy and Stainless Steel manufacturing and related fields.We serve customers worldwide, our main markets are in Europe, Middle East, South East Asia, South America and Africa.
Please fill out the form below or send an email to sales@southerly-alloy.com for more information.