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Help CenterASTM Hastelloy Alloy Bar Hastelloy C-22 Uns N06022 C276 Excellent Corrosion Resistance
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ASTM Hastelloy Alloy Bar: Hastelloy C - 22 (UNS N06022) and C276 with Excellent Corrosion Resistance
Product Overview
Our ASTM Hastelloy alloy bars, specifically Hastelloy C - 22 (UNS N06022) and C276, are high - performance materials engineered to meet the most demanding industrial applications. These bars are part of the nickel - based alloy family, which is well - known for its outstanding corrosion resistance and mechanical properties. With a strict adherence to ASTM standards, our products ensure reliability and consistency in various environments.
Composition and Structure
Hastelloy C - 22 (UNS N06022)
- Nickel (Ni): It forms the base of the alloy, providing a stable matrix and excellent ductility. Nickel also helps in improving the alloy's resistance to oxidation and corrosion in many media.
- Chromium (Cr): Chromium enhances the alloy's resistance to oxidizing environments. It forms a passive oxide layer on the surface of the bar, which protects it from further corrosion.
- Molybdenum (Mo): Molybdenum increases the alloy's resistance to pitting and crevice corrosion, especially in chloride - containing solutions.
- Tungsten (W): Tungsten further improves the overall corrosion resistance and mechanical strength of the alloy.
Hastelloy C276
- Similar to C - 22, it has a high nickel content as the base. The combination of chromium, molybdenum, and other trace elements gives it unique properties. Chromium provides resistance to oxidizing agents, while molybdenum is crucial for protection against reducing acids and localized corrosion.
Corrosion Resistance
General Corrosion
These Hastelloy alloy bars exhibit remarkable resistance to general corrosion in a wide range of chemical environments. They can withstand the attack of strong acids such as sulfuric acid, hydrochloric acid, and nitric acid over a broad concentration and temperature range. For example, in sulfuric acid solutions with concentrations up to 50% at moderate temperatures, the bars show minimal corrosion rates.
Pitting and Crevice Corrosion
In chloride - rich environments, pitting and crevice corrosion are common problems for many metals. However, Hastelloy C - 22 and C276 have excellent resistance to these forms of corrosion. Their chemical composition, especially the high molybdenum content, prevents the formation and propagation of pits and crevices, ensuring long - term durability in marine and chemical processing applications.
Stress - Corrosion Cracking
Stress - corrosion cracking can occur when a metal is exposed to a corrosive environment under tensile stress. Our Hastelloy alloy bars are highly resistant to stress - corrosion cracking in most common environments, including those containing chlorides and hydroxides. This property makes them suitable for applications where the bars are subjected to both mechanical stress and corrosive media.
Mechanical Properties
Strength
The Hastelloy alloy bars have high tensile and yield strengths. The tensile strength typically ranges from 690 MPa to 860 MPa, depending on the specific heat treatment and bar size. This high strength allows the bars to be used in structural applications where they need to withstand heavy loads.
Ductility
They also possess good ductility, which means they can be easily formed and machined. This property is essential for manufacturing processes such as forging, rolling, and machining into various shapes and sizes to meet different customer requirements.
Toughness
The bars exhibit excellent toughness, which is the ability to absorb energy and deform plastically before fracturing. This makes them suitable for applications where impact resistance is required, such as in the aerospace and automotive industries.
Applications
Aviation
In the aviation industry, these Hastelloy alloy bars are used in components that are exposed to harsh environments, such as fuel systems and engine parts. Their corrosion resistance ensures the long - term reliability of these components, even in the presence of aggressive chemicals and high - temperature conditions.
Electronics
For electronic applications, the bars can be used in connectors and other components where corrosion resistance is crucial to maintain electrical conductivity and prevent signal interference.
Industrial
In chemical processing plants, the bars are used in reactors, pipes, and valves. They can handle a variety of corrosive chemicals, including acids, alkalis, and salts, ensuring the safe and efficient operation of the plant.
Medical
In the medical field, the corrosion - resistant properties of these bars make them suitable for use in surgical instruments and medical devices. They can be sterilized repeatedly without significant corrosion, ensuring the safety and hygiene of medical procedures.
Chemical
In the chemical industry, they are used in storage tanks, heat exchangers, and other equipment that comes into contact with corrosive chemicals. Their ability to resist corrosion helps to extend the service life of the equipment and reduce maintenance costs.
Quality Assurance
Our company, a professional manufacturer established in 2017, is committed to providing high - quality products. We have a team of 11 - 20 experienced sales representatives who are dedicated to serving customers worldwide. Our products are exported to a wide range of markets, including North America, South America, Europe, Asia, Africa, and Oceania, with an annual export value between US$5 million and US$10 million. All our Hastelloy alloy bars are produced in strict accordance with ASTM/ASME standards, and we conduct comprehensive quality control tests at every stage of the manufacturing process to ensure that they meet or exceed customer expectations.
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