Incoloy
- As a leading supplier and manufacturer in China, HZW supply cost-effective and prime quality Incoloy alloy products.
Incoloy Alloys Grades
Incoloy Alloys Products
Incoloy Alloys Standards
ASTM B423
ASTM B829
ASTM B424
ASTM B906
ASTM B425
ASTM B564
*As a professional manufacturer, our Incoloy alloys are produced as per the standard.
Incoloy Alloys Resources
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Differences among Incoloy 800, 800H and 800HT
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Top 10 Trustworthy Suppliers for Nickel, Monel, Inconel, Incoloy & Hastelloy Alloys
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Need An Expert To Customized Your Incoloy Alloys?
Incoloy Alloys: The Ultimate Guide
Incoloy is classified into various grades. You may have questions:
What is the Incoloy alloys application?
What is the difference between Incoloy and other superalloys?
Why are Incoloy alloys classified into so many grades?
When you choose to buy quality HIncoloy alloys, there have some important points we need to know before we get started.
What is INCOLOY material?
Incoloy alloy is a remarkable high-temperature material renowned for its exceptional strength and oxidation resistance at elevated temperatures.
Its high chromium and aluminum content enables the formation of a dense oxide film on the alloy’s surface, providing effective protection against oxidation and corrosion in high-temperature environments.
Incoloy alloys also boast excellent machinability and weldability, offering significant flexibility in the manufacturing process. In summary, Incoloy alloy is a superior high-temperature material that plays a crucial role in supporting modern industrial development.
Features of Incoloy Alloys
1. High temperature strength:
2. Antioxidant performance:
3. Corrosion resistance:
4. Processing performance:
5. Welding performance:
Types and Grades of Incoloy Alloys
| Composition | Content Range | Effect | Typical Alloy |
|---|---|---|---|
| Nickel | 9% ~ 55% | Stabilize the Austenitic Structure Corrosion Resistance | Incoloy 825 |
| Iron | 22% ~ 59% | Save Cost | Incoloy 832 |
| Chromium | 0% ~ 28.5% | Oxidation Resistance | Incoloy 890 |
| Molybdenum | 0% ~ 8% | Reduction Resistance | Incoloy 926 |
| Aluminum | 0% ~ 1.25% | Strength Corrosion Resistance | Incoloy 800 Incoloy 925 |
| Titanium | 0% ~ 2.5% | Strength Corrosion Resistance | Incoloy A-286 |
| Niobium | 0% ~ 4.5% | Strength | Incoloy 020 Incoloy 945 |
| Copper | 0% ~ 4% | Corrosion Resistance | Incoloy 825 Incoloy 020 |
| Vanadium | 0% ~ 0.5% | Strength | Incoloy A-286 |
| Silicon | 0% ~ 1.5% | Oxidation Resistance | Incoloy 330 |
| Cobalt | 0% ~ 17% | Low Expansion | Incoloy 909 |
Incoloy Alloys Chemical Compositions Comparison Table:
Nickel
Nickel is the foundation of all superalloys, stabilizing the austenite phase and providing some corrosion resistance. In Incoloy alloys, nickel is the primary source of high-temperature resistance. However, since Incoloy alloys typically have lower nickel content than other superalloys, their high-temperature and corrosion resistance are somewhat reduced.
Chromium
Chromium is the main element responsible for the corrosion resistance of Incoloy alloys. Like in stainless steel and other superalloys, chromium primarily acts as an anti-oxidation agent. To counterbalance the lower corrosion resistance due to reduced nickel content, Incoloy alloys usually have higher chromium content. Chromium also contributes to solid solution strengthening, enhancing the alloy’s strength. Incoloy 890 is an example of a grade with high chromium content.
Molybdenum
Molybdenum serves two main purposes in Incoloy alloys: enhancing corrosion resistance and providing solid solution strengthening. Molybdenum is effective in reducing environments where chromium is less effective. Additionally, due to its significant atomic radius difference from iron and nickel, molybdenum offers a pronounced solid solution strengthening effect. Incoloy alloys typically have limited molybdenum content due to its high cost, which contrasts with Incoloy’s cost-saving intent. Incoloy 926 is a typical molybdenum-containing alloy.
Aluminum
Aluminum has two roles in Incoloy alloys. In some alloys (such as Incoloy 800), aluminum is added to enhance corrosion resistance, compensating for the reduced nickel. In other precipitation-strengthened Incoloy alloys (such as Incoloy 925), aluminum acts as a precipitation strengthening element, significantly increasing the alloy’s strength.
Titanium
Titanium in Incoloy alloys primarily serves as a precipitation strengthening element. In alloys like Incoloy A-286, even a small amount of titanium combined with aluminum can significantly boost tensile strength.
Niobium
Niobium contributes to both solid solution strengthening and precipitation strengthening in Incoloy alloys. Except for Incoloy 020, niobium is mainly used for precipitation strengthening in high-end Incoloy alloys, such as Incoloy 945, due to its high cost.
Copper
Copper primarily enhances corrosion resistance in Incoloy alloys, compensating for reduced nickel content and increasing resistance to sulfuric acid. Incoloy 825 is a typical copper-containing alloy.
Vanadium
Vanadium is mainly found in Incoloy A-286, where it enhances both solid solution and precipitation strengthening.
Silicon
Silicon is unique to Incoloy 330, where it replaces some chromium to improve oxidation resistance. However, excessive silicon can be detrimental, so its content must be controlled to prevent reduced alloy performance.
Cobalt
Cobalt is primarily found in low expansion alloys (Incoloy 903, 907, and 909), providing better high-temperature resistance and strength and extending the low expansion temperature range. This significantly reduces the alloy’s linear expansion coefficient at high temperatures.
Here are some common Incoloy grades:
-Incoloy 800
-Incoloy 800H
-Incoloy 800HT
-Incoloy 825
-Incoloy A-286
-Incoloy 330
-Incoloy 925
-Incoloy 926
-Incoloy 945
-Incoloy 25-6HN
Mechanical Properties of Incoloy Alloys
Based on their microstructure, Incoloy alloys are categorized into two main types: solid solution strengthened alloys and precipitation strengthened alloys.
Precipitation strengthened alloys, through aging treatment, can achieve significantly higher strength compared to solid solution strengthened alloys.
| Alloy | Category | Tensile Strength | Yield Strength | Elongation |
|---|---|---|---|---|
| MPa | MPa | % | ||
| Incoloy 800 | Solid Solution Strengthened Alloy | 515 | 205 | 30 |
| Incoloy 825 | Solid Solution Strengthened Alloy | 586 | 241 | 30 |
| Incoloy 925 | Precipitation Strengthened Alloy | 965 | 758 | 18 |
| Incoloy A-286 | Precipitation Strengthened Alloy | 896 | 586 | 15 |
Applications of Incoloy Alloys
- Process piping, heat exchangers, carburizing equipment, heating-element sheathing, nuclear steam-generator tubing
- Chemical and petrochemical processing, power plants, industrial furnaces, heat-treating equipment
- Pollution-control equipment, oil and gas well piping, nuclear fuel reprocessing, acid production, pickling equipment
Conclusion
Incoloy is among the most adaptable and versatile alloys available today. As its use expands, manufacturers are discovering new applications for this material.
If you’re seeking a reliable supplier or manufacturer for Incoloy sourcing, reach out to us at HZW ALLOYS. We are here to assist you.
FAQs
Is Inconel and INCOLOY the same?
The most common grades of Incoloy are Incoloy 800H/HT, Incoloy 825 and Incoloy 926, Incoloy A-286. The main difference between the two alloys is their composition: Inconel contains more nickel than Incoloy, while Incoloy contains more iron than Inconel.
What is the difference between Inconel 600 and Incoloy 800?
Inconel is a nickel-chrome alloy, typically includes more than 50% nickel, whereas Incoloy, a nickel-iron-chromium alloy, has less than 50% nickel. Incoloy 800 has a greater iron concentration. It has higher ferrous content and lower nickel content, Inconel 600 has less cost.
Is INCOLOY better than copper?
Unlike copper alloy, which is used in most power industries, Incoloy can withstand high temperature and corrosion. When choosing the right alloy for your projects, look for one that comes with quality and the capability to provide comfort and safety for your case.
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