Gnee Steel is a professional manufacturer of various Inconel 718 alloys, nickel-based alloys, Hastelloy alloys, and high-temperature alloy materials. Founded in 2008, the company specializes in the production and sales of alloy materials. Gnee Steel's products are widely used in aerospace, chemical, power generation, automotive, nuclear energy, and other fields, and the company can provide customized alloy material solutions according to customer needs. If you need to inquire about alloy material prices or customized solutions, please feel free to contact our sales staff.
Alloy 400 vs Hastelloy C276
Alloy 400 vs Hastelloy C276
Both Alloy 400 (nickel-copper alloy) and Hastelloy C276 (nickel-chromium-molybdenum alloy) are high-performance corrosion-resistant nickel-based alloys. Alloy 400 performs well in moderate-temperature seawater and reducing environments and is more cost-effective. Hastelloy C276, on the other hand, exhibits significantly stronger corrosion resistance to corrosive chemicals, high-temperature oxidation, and pitting corrosion in chloride environments.
When to use Hastelloy C276?
C-276 alloy is widely used in industries requiring extremely high corrosion resistance, including chemical and petrochemical processing, oil and gas, power generation, pollution control, pharmaceuticals, pulp and paper, and wastewater treatment.
Monel Alloy 400
Monel Alloy 400 is a nickel-copper alloy composed of 67% nickel and 23% copper. This gives it excellent corrosion resistance, as well as exceptional strength and toughness. These properties make it a commonly used material in industrial applications. Some of its common uses include the chemical, aerospace engineering, and shipbuilding industries. Despite its high strength, Monel Alloy 400 is also easily formable and can be machined into various shapes required by different industries. Due to its wide applicability, material cost savings can increasingly benefit customers – making it an ideal choice for those seeking reliable and cost-effective solutions.
Hastelloy C276
Hastelloy C276 is composed of nickel, chromium, and molybdenum, giving it excellent corrosion resistance. This makes the material suitable for many applications, including chemical processing, power generation, hydrochloric acid production, and marine engineering. Although more expensive than other metals, Hastelloy C276 offers a good return on investment due to its strength and reliability. Its heat resistance makes it particularly useful in industries requiring heat-resistant or stress-resistant materials, such as aerospace and nuclear engineering – helping manufacturers deliver higher-quality products without compromising durability.
Chemical composition of Monel 400 and Hastelloy C276 alloys
| Ni | Cu | Mo | Cr | W | Fe | Mn | Co | C | Si | Others | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Alloy 400 |
63-70 |
28-34 |
– |
– |
– |
2.5 |
2 |
2 |
0.3 |
0.5 |
0.024 |
| Hastelloy C276 |
Balance |
– |
15-17 |
14.5-16.5 |
3-4.5 |
4-7 |
1 |
2.5 |
0.01 |
0.05 |
0.37 |
Mechanical Properties of Monel 400 and Hastelloy C276
| Alloy 400 | Hastelloy C276 | |
|---|---|---|
| UTS (MPa) |
600 |
690 |
| 0.2% Proof Strength (MPa) |
415 |
310 |
| Elongation (%) |
20 |
40 |
| Hardness (HRC max %) |
35 |
45 |
| Condition |
Cold worked and stress relieved |
Cold worked and solution annealed |
Comparison of corrosion resistance between Monel 400 and Hastelloy C276
This is the most crucial difference between the two alloys.
| Corrosive Environment | Monel 400 | Hastelloy C276 |
|---|---|---|
| Seawater | Outstanding | Excellent |
| Hydrofluoric Acid | Excellent | Good |
| Sulfuric Acid | Good | Excellent |
| Hydrochloric Acid | Limited | Outstanding |
| Pitting & Crevice Corrosion | Moderate | Excellent |
Comparison of the temperature resistance properties of Monel 400 and Hastelloy C276
| Temperature Factor | Monel 400 | Hastelloy C276 |
|---|---|---|
| Maximum Service Temperature | ~550°C | ~1040°C |
| Oxidation Resistance | Moderate | Excellent |
| Creep Resistance | Limited | High |
In summary, Alloy 400 offers excellent and cost-effective corrosion resistance in moderately corrosive, reducing, or marine environments. For highly corrosive, highly acidic, or high-temperature oxidizing environments, Hastelloy C276 is a better choice.
Gnee Steel is a professional manufacturer of various nickel-based alloys, including Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel Alloy 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy Alloy 800, Incoloy 800H/HT, Incoloy 825, Monel Alloy 400, Monel K500, and high-temperature alloys. We specialize in the production and sales of alloy materials. Gnee Steel's products are widely used in aerospace, chemical, power, automotive, and nuclear energy industries, and we can provide customized alloy material solutions according to customer needs. For alloy material price inquiries or to request customized alloy material solutions, please feel free to contact us at ru@gneesteelgroup.com for a quote.