Dear friend,
While u cut SS material using a Oxyacetylene flame(gas cutting), the temperature generated during the process is not high enough to melt the Chromium oxide layer formed on the surface of the SS material, the melting point of chromium oxide = 2430 degree centigrade (approximately), to reach such a high temperature u have to give a very high input on a small area which is not possible by Gas Cutting, as large amount of heat is dissipated. Plasma Cutting Process has the ability to Deliver such a high heat input at a point, so that it can attain that temperature and hence it easily cuts SS.
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