Differences between Inconel 600 and Hastelloy C276
Differences between Inconel 600 and Hastelloy C276
Inconel 600 excels in high-temperature oxidation resistance and mechanical strength, making it particularly suitable for aerospace/heat exchangers; while Hastelloy C-276, due to its higher molybdenum and tungsten content, exhibits superior resistance to a variety of corrosive chemicals (especially reducing acids and chlorides), making it more suitable for chemical processing and effective even in humid and corrosive environments. The main difference lies in their resistance to heat (oxidation), while C-276 is more resistant to corrosion (reducing/oxidation), offering superior resistance to pitting and crevice corrosion.
What are the uses of Hastelloy C276?
Hastelloy C-276 is widely used in a variety of harsh environments, such as chemical processing, pollution control, pulp and paper production, industrial and municipal waste treatment, and acidic natural gas recovery.
In the field of high-performance alloys, Inconel 600 and Hastelloy C276 occupy unique yet complementary market positions. Both alloys are renowned for their exceptional corrosion resistance, strength, and durability in harsh environments. However, their distinct chemical compositions and mechanical properties dictate their suitability for different applications. This article will delve into the key differences between Inconel 600 and Hastelloy C276, providing a comprehensive analysis of their chemical composition, mechanical properties, corrosion resistance, and typical applications.
Inconel 600 and Hastelloy C276 –1. Chemical composition
| Element | Hastelloy C-276 (UNS N10276) Content (%) | Inconel 600 (UNS N06600) Content (%) |
|---|---|---|
| Nickel | 57.0 min (Balance) | 72.0 min (Balance) |
| Chromium | 14.5 – 16.5 | 14.0 – 17.0 |
| Iron | 4.0 – 7.0 | 6.0 – 10.0 |
| Molybdenum | 15.0 – 17.0 | – |
| Tungsten | 3.0 – 4.5 | – |
| Cobalt | ≤ 2.5 | – |
| Manganese | ≤ 1.0 | ≤ 1.0 |
| Silicon | ≤ 0.08 | ≤ 0.5 |
| Carbon | ≤ 0.01 | ≤ 0.15 |
| Phosphorus | ≤ 0.04 | – |
| Sulfur | ≤ 0.03 | ≤ 0.015 |
| Vanadium | ≤ 0.35 | – |
| Copper | – | ≤ 0.5 |
Inconel 600 and Hastelloy C276 – 2. Mechanical Properties
| Property | Hastelloy C-276 (Annealed) | Inconel 600 (Annealed) |
|---|---|---|
| Tensile Strength, Ultimate | 690 MPa (100 ksi) | 620 MPa (90 ksi) |
| Tensile Strength, Yield (0.2% Offset) | 283 MPa (41 ksi) | 241 MPa (35 ksi) |
| Elongation at Break | 40% | 40% |
| Reduction of Area | 50% | 50% |
| Hardness, Rockwell B | 87 HRB | 80 HRB |
| Hardness, Brinell | 190 HB | 155 HB |
| Modulus of Elasticity | 205 GPa (29.7 × 10⁶ psi) | 207 GPa (30.0 × 10⁶ psi) |
Both alloys possess high strength and toughness, but their mechanical properties differ slightly. Inconel 600 exhibits excellent creep resistance and good fatigue strength, making it suitable for long-term service at high temperatures. It retains its mechanical properties even when exposed to high-temperature oxidizing atmospheres.
On the other hand, Hastelloy C276 is renowned for its excellent ductility and toughness, enabling it to withstand deformation and impact. It also possesses good weldability and is easily machined into complex shapes and structures.
Inconel 600 and Hastelloy C276 – 3. Corrosion Resistance
Both alloys are renowned for their corrosion resistance, but they excel in different environments. Inconel 600 exhibits exceptional resistance to oxidation and corrosion in high-temperature oxidizing atmospheres, making it suitable for applications such as furnace components and heat treatment equipment.
On the other hand, Hastelloy C276 demonstrates superior corrosion resistance in reducing environments and corrosive chemicals, including hydrochloric acid, sulfuric acid, and hydrogen sulfide. Its unique composition enables it to withstand even the most corrosive environments, making it a preferred material for chemical processing, pulp and paper manufacturing, and waste treatment facilities.
Inconel 600 vs. Hastelloy C276 – 4. Applications
The performance differences between Inconel 600 and Hastelloy C276 determine their applications in different industrial sectors. Inconel 600 is commonly used in the oil and gas industry, nuclear power plants, and aerospace, where extremely high temperature resistance is required. It maintains good mechanical properties at high temperatures, making it suitable for components exposed to extreme heat environments.
On the other hand, Hastelloy C276 is widely used in the chemical industry, pulp and paper manufacturing, and marine environments. Its superior corrosion resistance in reducing environments and corrosive chemicals makes it the material of choice for equipment and pipelines handling corrosive media.
Why Choose Gnee as Your Nickel-Based Alloy Supplier
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About Gnee Steel
Gnee Steel is a professional manufacturer of nickel-based alloys, including Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy 800, Incoloy 800H/HT, Incoloy 825, Monel 400, Monel K500, and other high-temperature alloy materials. We specialize 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 we can provide customized alloy material solutions according to customer needs. For inquiries about alloy material prices or customized alloy material solutions, please feel free to contact us via email at ss@gneemetal.com for a quote.
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