Hastelloy

Your Professional Hastelloy Manufacturer!

Taizhou Aoyuan Alloy Materials Co., Ltd. is located in Taizhou City, Jiangsu Province, the core industrial zone of the Yangtze River Delta in China. It is a high-tech enterprise integrating R&D, production and sales. The company focuses on the innovation and manufacturing of special materials such as high-resistance electric heating alloys, high-temperature alloys, and high-temperature corrosion-resistant alloys. Its products are widely used in aerospace, energy and power, electronics and electrical appliances, petrochemicals, high-end equipment manufacturing and other fields. With advanced technical strength and strict quality control, Aoyuan Alloy has become one of the core suppliers in the field of special alloy materials at home and abroad.

Why Choose Us

Technical highlights

We have our own full-process production line of smelting-hot rolling-cold drawing-finishing, and use advanced processes such as vacuum induction melting (VIM) and electroslag remelting (ESR) to ensure the uniformity of material composition and consistency of performance.

Production capacity

Annual production of special alloy materials exceeds 5,000 tons, equipped with spectrum analyzers, electronic universal testing machines, metallographic microscopes and other testing equipment to achieve full quality control from raw materials to finished products.

Certification system

Passed ISO 9001 quality management system and ISO 14001 environmental management system certification, and some products meet international standards such as ASTM, GB, and DIN.

Customized service

Design alloy composition, processing technology or shape for special needs (such as extreme temperature, corrosive environment, etc.). Support personalized processing of wires, bars, strips and special-shaped parts, and respond quickly to customer needs.

Key Properties

Chemical Composition (Typical)
Ni	≥52%
Mo	15-17%
Cr	14.5-16.5%
Fe	4-7%
W	3-4.5%
Co	≤2.5%
C	≤0.01%
Mechanical Properties (Annealed)
Tensile Strength	≥690 MPa
Yield Strength	≥283 MPa
Elongation	≥40%
Service Temperature	-196°C to +400°C (short-term up to 1093°C)
Corrosion Resistance
Resists sulfuric, hydrochloric, and phosphoric acids (especially with Cl⁻).
Exceptional resistance to localized corrosion (PRE ≥68).
Compatible with wet chlorine, mixed acids, and sulfur-containing media.

Advantages of Hastelloy

Superior Corrosion Resistance

Hastelloy is able to withstand the most aggressive environments, including strong acids, chlorides, and other corrosive media that can severely damage other metals.

High Temperature Performance

This alloy maintains strength and structural integrity at high temperatures, making it ideal for use in high-temperature reactors and heat exchangers.

Versatility

Due to its powerful properties, Hastelloy is used in a variety of industries including chemical processing, oil and gas extraction, power generation, and aerospace.

Durability

Hastelloy maintains excellent mechanical properties even under severe mechanical and thermal stress.

Non-magnetic Excellence

Hastelloy’s non-magnetic nature is particularly valuable in applications that demand materials devoid of magnetic properties. This characteristic further enhances Hastelloy’s resistance to electromagnetic interference.

Application of Hastelloy

01/

Power Generation: Hastelloy alloys are used in gas turbines, heat exchangers, and boiler components that work at high temperatures and in corrosive environments.

02/

Chemical Processing: Hastelloy is resistant to a variety of chemicals, including sulfuric acid, hydrochloric acid, and wet chlorine gas, making it the ideal material for use in chemical processing plants.

03/

Pharmaceutical: Due to their resistance to corrosive chemicals and sterilisation methods, Hastelloy has proven to be a critical alloy for manufacturing and handling pharmaceutical products.

04/

Pollution control: Hastelloy alloys are often found in waste treatment plants and desulfurisation systems, thanks to their resistance to corrosive gases and acidic environments.

05/

Petrochemical: In the petrochemical industry, Hastelloy's resistance to pitting, stress-corrosion cracking, and oxidation makes it suitable for applications like separators, stack liners, and heaters.

06/

Aerospace: In the aerospace industry, Hastelloy's high-temperature resistance comes into play, with it being used in combustion system components and exhaust ducts.

Hastelloy Composition

Nickel (Ni)

This is the primary element. It provides a stable foundation. It gives good general resistance to corrosion.

Molybdenum (Mo)

This element greatly boosts resistance. It fights against reducing acids. Hydrochloric acid is one such acid. Sulfuric acid is another. Molybdenum also helps stop pitting. It helps stop crevice corrosion.

Chromium (Cr)

This element is essential. It helps resist oxidizing conditions. Nitric acid is an example. Wet chlorine gas is another. Chromium forms a protective layer on the surface.

Tungsten (W)

This is often added. It improves resistance to various acids. It works for both oxidizing and reducing types. It also makes the alloy stronger at high temperatures.

Iron (Fe)

This can change mechanical properties. It can also affect the cost. The amount of iron is carefully controlled in each grade.

Low Carbon (C)

Modern Hastelloy types have very little carbon. This is important. It prevents problems during welding. Such problems could lower the corrosion resistance.

Types of Hastelloy

Hastelloy B
Hastelloy B is resistant to corrosion by reducing medium, suitable for manufacturing equipment for hot concentrated hydrochloric acid and hydrogen chloride gas. It features good strength at 1095 °C, used for old-fashioned internal combustion engines and rocket engine components.

Hastelloy B-2
Hastelloy B-2 exhibits excellent corrosion resistance to strong reducing chemicals such as hydrochloric acid and aluminum chloride catalyst. This alloy also has good intergranular corrosion resistance, suitable for equipment in hydrochloric acid and medium-concentration sulfuric acid (especially at high temperatures) environments.

Hastelloy B-3
Hastelloy B-3 is a nickel-molybdenum alloy containing about 28% molybdenum. This alloy can withstand atmospheric pressure of any concentration and hydrochloric acid of any temperature with the corrosion rate at less than 0.5mm/year.

Hastelloy C
Though sharing similar basic corrosion resistance like NS334 alloy, Hastelloy C exhibits better radiation resistance.

Hastelloy C-4
Hastelloy C-4 is corrosion resistant to chloride-containing oxidation or reduction. It features good thermal stability, suitable for wet chlorine, hypochlorous acid, sulfuric acid, hydrochloric acid, mixed acid, chloride device and direct application after welding. The alloy exhibits good high-temperature stability, toughness and corrosion resistance in temperatures ranging from 650 ° C to 1040 ° C, with its basic corrosion resistance same as that of NS334.

Hastelloy C-22
Hastelloy C-22 can be referred as an all-round nickel-chromium-molybdenum-tungsten alloy. It features better overall corrosion resistance than other existing nickel-chromium-molybdenum alloys. Hastelloy C-22 alloy has excellent resistance to pitting corrosion, crevice corrosion and stress corrosion cracking. Besides, it exhibits excellent resistance to aqueous solvents, including wet chlorine, nitric acid or mixed acid with chloride-ions-containing oxidizing acids.

Hastelloy C-276
Hastelloy C-276 is a corrosion-resistant alloy with many excellent properties, such as good resistance to oxidizing and moderate reducing corrosion, excellent stress corrosion cracking resistance and good local corrosion resistance.

Hastelloy C-2000
Hastelloy C-2000 is a nickel-based super alloy composed of 55% nickel and other elements like molybdenum, chromium, copper and etc. It is an optimized alloy developed to expand the material applications.

Hastelloy G-3
Hastelloy G-3 is a high-performance nickel-based corrosion-resistant alloy. It belongs to Ni-Cr-Fe alloy group that contains Mo and Cu. The super alloy features excellent resistance to oxidation, atmospheric corrosion and stress corrosion cracking.

Hastelloy G-30
Hastelloy G-30 is a high-chromium nickel-based alloy that has better corrosion resistance than most other nickel-based and iron-based alloys in environments mixed with commercial phosphoric acid and many highly oxidizing acid media. G-30 alloy can prevent welding heat from affecting the formation of grain boundary precipitation within the heating zone, so the welded product is applicable to various chemical treatment projects.

Hastelloy G-35
Hstelloy G-35 features outstanding resistance to pitting and crevice corrosion in the halogenide medium and sulfuric acid-containing acidic environment, effectively resistant to chloride ion stress corrosion. Hstelloy G-35 also has good corrosion resistance and stability in oxidizing and reducing media, with slightly better mechanical properties than 904L.

Hastelloy X
Hastelloy X is a nickel-chromium-molybdenum alloy with addition of the cobalt and tungsten. It exhibits excellent oxidation resistance at temperatures up to 1200 ° C and can also be used in neutral and reducing atmospheres. Meanwhile, alloy Hastelloy X is resistant to carbonization and nitriding atmosphere.

Packaging and Delivery

productcate-1-1

FAQ

Q: Do you provide samples ? is it free or extra ?

A: Yes, we could offer the sample for free charge, Would you mind paying the freight fee?

Q: How long is your delivery time?

A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.

Q: What is your terms of payment ?

A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.

Q: Do you test all your goods before delivery?

A: Yes, we have 100% test before delivery.

Q: Is Hastelloy a stainless steel?

A: No, Hastelloy is not stainless steel. While both are corrosion-resistant alloys, they differ significantly in composition and properties. Hastelloy is a nickel-based alloy, while stainless steel is primarily an iron-based alloy.

Q: What is Hastelloy made of?

A: Hastelloy C-22 is primarily composed of nickel, chromium, molybdenum, and tungsten, giving it good all-round resistance to all forms of corrosion, including pitting, crevice, and stress corrosions. It also has a high resistance to aqueous corrosions like nitric acid and wet chlorine.

Q: What do you weld Hastelloy with?

A: HASTELLOY alloy X can be welded by metallic-arc, inert-gas-shielded arc, submerged-melt, and SIGMA methods.

Q: What is the difference between Hastelloy and monel?

A: Monel is a nickel-copper alloy, and Hastelloy is a series of alloys containing nickel and several other metals. Monel has a low voltage coefficient and is resistant to most corrosive environments. Whereas Hastelloy is designed for applications in high-temperature, oxidizing environments.

We're professional hastelloy manufacturers and suppliers in China, specialized in providing high quality customized products. We warmly welcome you to wholesale high-grade hastelloy made in China here from our factory.

Alloy C276, c22 stainless steel, Nickel Alloy Tubes