The Functions And Effects Of Different Elements in Nickel-based Alloys
Jul 05, 2025
By adding a certain amount of metallic or non-metallic elements during the smelting process, the special properties of the material can be achieved, such as enhancing strength, improving oxidation resistance, increasing plasticity and process performance, etc.
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Nickel(Ni)： |
Provides excellent smelting stability. As a base element, it enhances acid resistance, high-temperature resistance, and corrosion resistance. |
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Chromium(Cr)： |
Improves high-temperature oxidation resistance and enhances resistance to pitting corrosion. |
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Molybdenum(Mo): |
Enhances resistance to reducing acids (such as hydrochloric acid and sulfuric acid) corrosion, and inhibits pitting and crevice corrosion. |
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Iron(Fe): |
Improves thermal stability and reduces processing brittleness, improving cost. |
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Copper(Cu): |
Enhances acid corrosion resistance and improves salt resistance. |
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Tungsten(W): |
Solid solution strengthening, enhancing high-temperature strength and creep resistance. |
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Aluminum(Al): |
Assists in grain boundary strengthening, improving welding performance. |
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Carbon(C): |
Reduces the risk of intergranular corrosion, but excessive levels can affect toughness and corrosion resistance. |
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Manganese(Mn), Silicon(Si): |
Control of impurities to reduce the formation of brittle phases. |
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Cobalt(Co): |
Provides high-temperature stability and resistance to thermal fatigue. |
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Lanthanum(La): |
Refines grain boundaries, improving oxidation life. |
