![]() By contrast, galvanized steel produces highly toxic fumes when a welder works on or even cuts it. Stainless Structurals makes the availability of stainless shapes a non-issue. Stainless steel is becoming more and more popular and most fabricators are comfortable working with stainless. If you leave a stainless beam or channel sitting in the woods, you can come back in a million years and it will still be just fine. But archaeologists often consider it to be one of the few permanent materials that humans can create. Or otherwise in the presence of very strong acids. It is possible to break down stainless steel in, say, certain marine applications. It is corrosion-resistant because of a molecular effect called passivation, in which chromium oxide molecules immediately “heal over” any scratch or cut to the metal, no matter how deep. The physical properties of stainless steel are quite different. And just like a paint job, if you scratch galvanized steel (or drill through it, or cut through it), you expose the inner layer which is very susceptible to corrosion. This gives it essentially the same mechanical properties as a paint job. In essence, this process jackets the steel in a relatively impervious layer. Galvanized steel is corrosion-resistant because it has been hot-dipped, typically in zinc. Chemical, Pharmaceutical & Petrochemical.
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