Hastelloy is a nickel-based corrosion-resistant alloy built on Ni-Mo and Ni-Mo-Cr systems. It delivers robust resistance to reducing acids, chloride pitting and crevice corrosion, widely deployed in chemical processing, FGD and sour oil & gas service, with typical grades C276, B3.
Inconel nickel alloys cover solid-solution strengthened and precipitation-hardened variants, balancing high-temperature strength, oxidation and corrosion resistance. Classic grades 625 & 718 serve marine, petrochemical, aerospace and gas turbine high-load corrosive applications.
Hastelloy vs Inconel: Equivalent Grades
Hastelloy Equivalent Grades：
| STANDARD | WERKSTOFF NR. | UNS | GOST | AFNOR | JIS | OR | EN |
| Hastelloy C22 | 2.4602 | N06022 | - | - | NW 6022 | - | NiCr21Mo14W |
| Hastelloy C276 | 2.4819 | N10276 | ХН65МВУ | - | NW 0276 | ЭП760 | NiMo16Cr15W |
| Hastelloy B2 | 2.4617 | N10665 | |||||
| Hastelloy B3 | 2.4600 | N10675 | |||||
| Hastelloy C4 | 2.4610 | N06455 | |||||
| Hastelloy C-22HS | - | N07022 | |||||
| Hastelloy C2000 | 2.4675 | N06200 | |||||
| Hastelloy Hybrid BC1 | 2.4708 | N10362 | |||||
| Hastelloy X | 2.4665 | N06002 |
Inconel Equivalent Grades：
| STANDARD | WERKSTOFF NR. | UNS | GOST | AFNOR | JIS | BS | EN | OR |
| Inconel 600 | 2.4816 | N06600 | МНЖМц 28-2,5-1,5 | NC15FE11M | NCF 600 | NA 13 | NiCr15Fe | ЭИ868 |
| Inconel 601 | 2.4851 | N06601 | XH60BT | NC23FeA | NCF 601 | NA 49 | NiCr23Fe | ЭИ868 |
| Inconel 617 | 2.4663 | N06617 | ||||||
| Inconel 625 | 2.4856 | N06625 | ХН75МБТЮ | NC22DNB4M | NCF 625 | NA 21 | NiCr22Mo9Nb | ЭИ602 |
| Inconel 690 | 2.4642 | N06690 | ||||||
| Inconel 718 | 2.4668 | N07718 | ||||||
| Inconel 725 | - | N07725 | ||||||
| Inconel X-750 | 2.4669 | N07750 |
Hastelloy vs Inconel：Chemical Composition
Hastelloy Chemical Composition：
| Alloy* | C% | Co% | Cr% | Mo% | V% | W% | Ai% | Cu% | Nb % | Ti% | Fe% | Ni% | Other% |
| Hastelloy B | 0.1 | 1.25 | 0.6 | 28 | 0.3 | - | - | - | - | - | 5.5 | rest/bal | Mn 0.80; Si 0.70 |
| Hastelloy B2 / Hastelloy B-2 | 0.02 | 1 | 1 | 26.0-30.0 | - | - | - | - | - | - | 2 | rest/bal | Mn 1.0, Si 0.10 |
| Hastelloy C | 0.07 | 1.25 | 16 | 17 | 0.3 | 40 | - | - | - | - | 5.75 | rest/bal | Mn 1.0; Si 0.70 |
| Hastelloy C4 / Hastelloy C-4 | 0.015 | 2 | 14.0-18.0 | 14.0-17.0 | - | - | - | - | - | 0..70 | 3 | rest/bal | Mn 1.0 ; Si 0.08 |
| Hastelloy C276 / Hastelloy C-276 | 0.02 | 2.5 | 14.0-16.5 | 15.0-17.0 | 0.35 | 3.0-4.5 | - | - | - | - | 4.0-7.0 | rest/bal | Mn 1.0; Si 0.05 |
| Hastelloy F | 0.02 | 1.25 | 22 | 6.5 | - | 0.5 | - | - | 2.1 | - | 21 | rest/bal | Mn 1.50; Si 0.50 |
| Hastelloy G | 0.05 | 2.5 | 21.0-23.5 | 5.5-7.5 | - | 1 | - | 1.5-2.5 | 1.7-2.5 | - | 18.0-21.0 | rest/bal | Mn 1.0-2.0; P0.04; Si 1.0; |
| Hastelloy G2 / Hastelloy G-2 | 0.03 | - | 23.0-26.0 | 5.0-7.0 | - | - | - | 0.70-1.20 | - | 0.70-1.50 | rest/bal | 47.0-52.0 | Mn 1.0; Si 1.0 |
| Hastelloy N | 0.06 | 0.25 | 7 | 16.5 | - | 0.2 | - | 0.1 | - | - | 3 | rest/bal | Mn 0.40; Si 0.25; B 0.01 |
| Hastelloy S | 0.02 | 2 | 15.5 | 14.5 | 0.6 | 1 | 0.2 | - | - | - | 3 | rest/bal | Mn 0.50; Si 0.40; B0.0009; La 0.02 |
| Hastelloy W | 0.06 | 1.25 | 5 | 24.5 | - | - | - | - | - | - | 5.5 | rest/bal | Mn 0.050; Si 0.50 |
| Hastelloy X | 0.1 | 1.5 | 22 | 9 | - | 0.6 | - | - | - | 18.5 | - | rest/bal | Mn 0.6; Si 0.60 |
Inconel Chemical Composition：
| Inconel | Element (% by mass) | ||||||||||||||
| Ni | Cr | Fe | Mo | Nb | Co | Mn | Cu | Al | Ti | Si | C | S | P | B | |
| 600 | 72.0 | 14.0–17.0 | 6.0–10.0 | 1.0 | 0.5 | 0.5 | 0.15 | 0.015 | |||||||
| 617 | 44.2–56.0 | 20.0–24.0 | 3.0 | 8.0–10.0 | 10.0–15.0 | 0.5 | 0.5 | 0.8–1.5 | 0.6 | 0.5 | 0.15 | 0.015 | 0.015 | 0.006 | |
| 625 | 58.0 | 20.0–23.0 | 5.0 | 8.0–10.0 | 3.15–4.15 | 1.0 | 0.5 | 0.4 | 0.4 | 0.5 | 0.1 | 0.015 | 0.015 | ||
| 690 | 59.5 | 30 | 9.2 | 0.35 | 0.01 | 0.02 | 0.35 | 0.019 | 0.003 | ||||||
| 718 | 50.0–55.0 | 17.0–21.0 | balance | 2.8–3.3 | 4.75–5.5 | 1.0 | 0.35 | 0.2–0.8 | 0.65–1.15 | 0.3 | 0.35 | 0.08 | 0.015 | 0.015 | 0.006 |
| X-750 | 70.0 | 14.0–17.0 | 5.0–9.0 | 0.7–1.2 | 1.0 | 1.0 | 0.5 | 0.4–1.0 | 2.25–2.75 | 0.5 | 0.08 | 0.01 | |||
Hastelloy vs Inconel：Composition Differences and Alloying Elements
Composition differences and alloying elements play a vital role in determining the characteristics and properties of high-performance alloys such as Hastelloy and Inconel. These elements are carefully selected and combined in specific proportions to achieve the desired properties such as corrosion resistance, high temperature strength, and durability. Understanding the differences in composition and alloying elements between Hastelloy and Inconel is essential to choosing the best alloy for a particular application.
Inconel：
Inconel alloy is known for its excellent mechanical properties such as high resistance to oxidation and corrosion, which makes it an ideal material for harsh environments where the material is at risk of degradation.
Inconel has high tensile strength, fatigue resistance, and toughness due to its nickel-chromium-based high-temperature alloy.
Inconel can withstand high temperatures and corrosive environments, which is why they are widely used in aerospace, chemical processing, offshore engineering, and nuclear reactors.
Hastelloy：
Hastelloy is a nickel-based high-temperature alloy containing molybdenum. Nickel gives the alloy good resistance to high temperatures. Chromium and molybdenum give the alloy corrosion resistance.
In addition, Hastelloy has excellent mechanical strength and is highly resistant to oxidation and cracking. These properties make Hastelloy a popular choice for applications in industries such as chemical processing, aerospace, and offshore engineering.
Different grades of Hastelloy alloy offer varying degrees of resistance to specific corrosive environments, such as oxidizing acids, reducing acids, and seawater. For example, Hastelloy C276, a nickel-chromium-molybdenum wrought alloy, is known for its excellent resistance to a wide range of corrosive chemicals.
Hastelloy vs Inconel：Applications in Different Industries
Inconel Applications：
Ideal Uses in the Oil and Gas Industry
Inconel has a variety of applications and is commonly used in propeller shafts, hot containers for food and water, chemical processing equipment, gas turbines, aircraft, and tank trucks.
Hastelloy Applications：
Hastelloy is commonly used in pipes and valves for chemical processing, petrochemical industry, nuclear reactors, pressure vessels, and heat exchangers.
Hastelloy vs. Inconel Price
Choosing between Hastelloy and Inconel often comes down to your project's needs and budget. While Hastelloy typically offers superior corrosion resistance, especially in harsh chemical environments, Inconel stands out for its exceptional strength at high temperatures. The price of these alloys can vary based on grade, availability, and market conditions.
Contact us today for competitive pricing on Hastelloy and Inconel and find the perfect alloy for your application!
FAQ:
Is Hastelloy the same as Inconel?
No, Hastelloy and Inconel are not the same. Both are brand names for high-performance nickel-based "superalloys" designed for extreme environments, but they have different chemical makeups and primary uses. Inconel is made by Special Metals Corporation, while Hastelloy is made by Haynes International.
What are the key differences between Hastelloy C276 and Inconel 625?
Inconel 625 and Hastelloy C-276 are both nickel-chromium-molybdenum superalloys. Inconel 625 offers higher tensile strength and better high-temperature structural performance, while Hastelloy C-276 provides superior corrosion resistance in severe, aggressive chemical and reducing acid environments.
Is Hastelloy better than inconel?
Neither alloy is universally "better"; Inconel is superior for high-heat structural strength and oxidation resistance, while Hastelloy is better for surviving extreme chemical corrosion and harsh acids. The right choice depends entirely on whether your primary enemy is high temperature or aggressive chemicals.
