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Vanadium-aluminum alloy—grade and chemical composition
When discussing the grades and chemical compositions of vanadium-aluminum alloys, it is first necessary to clarify the definitions provided in the national standard GB5063-85. The following are the grades and their corresponding chemical compositions:
Grade AIV55: In this grade of alloy, the vanadium content ranges from 50% to 60%, the iron content is 0.35%, the silicon content is 0.30%, the carbon content is 0.15%, the oxygen content is 0.20%, and the aluminum content makes up the remainder.
Grade AIV65: For Grade AIV65, the vanadium content exceeds 60%-70%, the iron content is adjusted to 0.30%, the silicon content is also 0.30%, the carbon content is increased to 0.20%, the oxygen content is also 0.20%, and the aluminum content remains at the balance.
Grade AIV75: In this grade, the vanadium content exceeds 70%–80%, while the iron, silicon, and carbon contents are all 0.30%. The oxygen content is 0.20%. However, when the aluminum content reaches the remainder, the carbon content is further reduced to only 0.20%.
Grade AIV85: In Grade AIV85, the vanadium content exceeds 80%–90%, while the contents of iron, silicon, carbon, and oxygen are all 0.30%. When the aluminum content is the remainder, the carbon content is further increased to 0.30%.
Through the analysis above, we have clearly understood the differences in chemical composition among various grades of vanadium-aluminum alloys, as well as the impact these differences have on the alloys' performance. This knowledge helps in selecting the most suitable grade for specific application requirements in practical use.
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