Jiangsu Zhonggongte Metallurgical Technology Co., Ltd.
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K418 is a nickel based cast superalloys strengthened by precipitation of gamma 'phase.
K418 is a high-temperature alloy with excellent high-temperature performance and corrosion resistance, widely used in aerospace, energy, chemical and other fields. It is composed of metal elements such as cobalt, nickel, and chromium, and has excellent high-temperature stability, corrosion resistance, good mechanical properties, and thermal conductivity. K418 cast high-temperature alloy has outstanding creep strength, thermal fatigue function, and oxidation resistance below 900 ℃, and can be used at temperatures below 900 ℃. The γ 'phase of this alloy is a precipitation strengthening phase, which enables it to resist corrosion from corrosive media such as thermal expansion, oxidation, vulcanization, and chlorination at high temperatures, maintaining its stability and durability. In addition, K418 alloy also has good thermal conductivity, which can effectively conduct heat to maintain its stability.
The chemical composition of K418 alloy includes carbon (C), chromium (Cr), nickel (Ni), molybdenum (Mo), aluminum (Al), titanium (Ti), iron (Fe), niobium (Nb), boron (B), zirconium (Zr), silicon (Si), manganese (Mn), phosphorus (P), and sulfur (S).
| C | Cr | Ni | Mo | Al | Ti | Fe | Nb |
| 0.08% to 0.16%. | 11.5% to 13.5%. | balance. | 3.8% to 4.8%. | 5.5% to 6.4%. | 0.5% to 1.0%. | ≤1.0%. | 1.8% to 2.5%. |
The range of carbon (C) content is 0.08% to 0.16%.
The content range of chromium (Cr) is 11.5% to 13.5%.
The content of nickel (Ni) is the balance.
The content range of molybdenum (Mo) is 3.8% to 4.8%.
The content range of aluminum (Al) is 5.5% to 6.4%.
The content range of titanium (Ti) is 0.5% to 1.0%.
The content of iron (Fe) shall not exceed 1.0%.
The content range of niobium (Nb) is 1.8% to 2.5%.
The content range of boron (B) is 0.008% to 0.02%.
The content range of zirconium (Zr) is 0.06% to 0.15%.
The content of silicon (Si) and manganese (Mn) shall not exceed 0.5%.
The content of phosphorus (P) and sulfur (S) shall not exceed 0.015%.
K418 is a nickel based cast high-temperature alloy with excellent creep strength, resistance to cold and hot fatigue, and oxidation resistance. Its operating temperature range is below 900 degrees Celsius, and through hot isostatic pressing treatment and subsequent heat treatment, the plasticity and fatigue resistance of the alloy can be improved. K418 alloy is widely used in gas turbine working blades, guide vanes, and integral cast turbines, as well as cast turbine rotors and guides for engines.
The application fields of K418 alloy mainly include aerospace, aviation engines, gas turbines, chemical equipment, and other fields that require high temperature and corrosion resistance.
K418 alloy is a type of cast high-temperature alloy that has excellent high-temperature strength, oxidation resistance, corrosion resistance, and machinability, and is therefore widely used in multiple fields. Specifically, the application areas of K418 alloy include:
In the aerospace field, K418 alloy is commonly used to manufacture aviation engine components such as turbine blades, turbine disks, as well as combustion chambers, nozzles, and other components used in the manufacturing of aviation engines.
In the field of gas turbines, K418 alloy is also widely used, such as in the manufacture of turbine blades, combustion chambers, burners, and other components.
Chemical equipment: Due to its excellent corrosion resistance, K418 alloy is used to manufacture corrosion-resistant and high-temperature resistant components in chemical equipment, such as reaction vessels, pipelines, and valves.
Other fields: K418 alloy may also be used in other fields that require high temperature and corrosion resistance, such as turbochargers in automotive manufacturing, gas turbines in power equipment, etc.
Overall, K418 alloy has been widely used in many fields that require high-performance materials to be used in extreme working environments due to its excellent high-temperature strength and corrosion resistance
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