Outer wall options of 0.016" 430 stainless steel or 0.021" galvalume steel Click to expand... You'll see the blue sections are typos, and should read "430 stainless" instead of "430 G90 Galvanized". Working the Metals. When it comes to strength and durability, therefore, stainless steel always comes out on top. However, because stainless steel is made up of a mixture of metals that prevent corrosion it is more expensive. When to Use Stainless Steel vs. Galvanized Zinc Screws for Outside Construction. The two most common variations you see are stainless steel and galvanized steel. Furthermore, stainless steel can be kept clean easily. Durability Galvanized steel cannot survive for long, as the zinc coating can deplete with even a strong scratch. Both of these materials have undergone a process that makes them usable in numerous circumstances. The corrosion resistance of zinc plating decreases rapidly above 100C, and embrittlement can occur above 500C. Stainless steel can be used up to temperatures of about 1000C. Stainless steel and galvanized materials often are found together in the industry with applications such as galvanized fasteners, stainless steel pressure vessels and roof and siding panels. Stainless Steel: Built to Last. Steel is often times altered to take on traits that allow it to withstand elements and dangers to its structural integrity. And finally, the most significant difference between galvanized steel cable and stainless steel cable is the way they are both used. If you can afford it, or make room for it in the budget, stainless steel will provide you with greater longevity. Alistair has been working in home improvement for ten years. Stainless Structurals makes the availability of stainless shapes a non-issue. Stainless vs Galvanized. Both stainless and galvanized steel are often used in the same industries, mainly as raw materials for the production of products that are not subject to corrosion, parts and components of machine tools, plants and aggregates. The main benefit of utilizing stainless steel tools and equipment is the corrosion durability. 5. However, it requires considerably … Author: Alistair Torrance. Zinc plating has lower resistance to chemical corrosion from acids and alkalis than stainless steel. It is relatively easy and safe to weld. While the appearance of cable is typically not incredibly important, it may matter in some applications. Uses. By contrast, galvanized steel produces highly toxic fumes when a welder works on or even cuts it. Galvanized steel is not as shiny as stainless steel and appears to be a bit duller and streakier. Galvanized steel is more affordable than stainless steel. The presence of two dissimilar metals in an assembly is not always a sign of trouble but it could be a problem. Stainless steel is becoming more and more popular and most fabricators are comfortable working with stainless. Galvanized steel finds extensive used in the construction of pipes and fittings in houses. Galvanized steel will be good if you need a lot of steel piping and don’t quite have the budget to afford stainless steel, but it won’t last as long and is difficult to repair. Galvanized steel is just a single metal with a protectant, which makes it more economic. Deciding whether to use stainless steel or hot-dipped galvanized screws can sometimes be more of an important decision that one might think. Stainless steel screws have an incredibly high tensile strength, measuring between 100,000 and 150,000 tensile pounds per square inch (PSI). Galvanized steel, due to its weaker strength and cheaper price, is used for smaller-budget projects, in general, than stainless steel. 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