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Hastelloy C/UNS N10002 Hastelloy alloy is a nickel-based alloy with remarkable high temperature resistance and corrosion resistance. It plays an indispensable role in many industrial fields. Its excellent corrosion resistance, single-phase austenite structure and rich content of Cr, Mo and other elements give it the ability to maintain stable performance in various extreme environments.
This alloy is mainly composed of elements such as nickel, chromium and molybdenum. The synergistic effect of these elements makes the alloy have excellent corrosion resistance. At the same time, its single-phase austenite structure enables the alloy to maintain good stability under high temperature and high pressure environments. This organizational structure also gives the alloy good processing and welding properties, which is convenient for various processing and connection operations in industrial production.
Chemical composition and physical properties
The chemical composition of Hastelloy C includes about 57% nickel, 16% chromium, 15% molybdenum, 4% tungsten, and small amounts of iron, cobalt, carbon, manganese, silicon and other elements. Its physical properties are as follows:
Density: 8.94 g/cm³
Melting point: 1350ºC
Specific heat: 0.385 J/kg·K
Thermal conductivity: 29.3 W/(m·K) (25ºC)
Modulus of elasticity: 210 MPa (28ºC)
Mechanical properties
Hastelloy C also has excellent mechanical properties, as follows:
Tensile strength: 690 MPa
Yield strength: 310 MPa
Elongation: 40%
Corrosion resistance
Resistance to a variety of strong corrosive media: It can resist the erosion of strong corrosive media such as chlorine, acid, nitrates, etc. Hastelloy C-276 alloy has excellent corrosion resistance to most corrosive media in oxidation and reduction states, and also has excellent resistance to pitting corrosion, crevice corrosion and stress corrosion cracking.
Adapt to a variety of corrosive environments: It can work stably for a long time in corrosive environments such as strong acids, strong alkalis, and salt solutions. For example, Hastelloy C-2000 shows good corrosion resistance in acids, alkalis and salt solutions, especially in strong acid and oxidizing environments, and can resist the erosion of strong corrosive media such as sulfuric acid, acid and chlorides.
Application fields
Aerospace
In the aerospace field, the demand for high-temperature alloy materials is increasing. This alloy is used in key components in high-temperature working environments such as engine parts and combustion chamber linings due to its excellent high-temperature resistance and oxidation resistance.
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