Grade 202 is an austenitic chromium-manganese alloy with less nickel content. It offers lower corrosion resistance when compared to grade 304.
Grade 304 is superior stainless steel, likewise its price. It offers a high degree of corrosion resistance and exhibits considerable strength at cryogenic and elevated temperatures. It poses excellent weldability and formability too.
Gates and window grills are explicit projections. The precise questions need open answers. Like in which environment gates and grill are going to install? What is the budget of course?
For interior window gills, grade 202 may prove to be a sufficient step. But exterior gates and windows are exposed to more adverse conditions like weather, heat, moisture, etc. grade 304 is a decent option in long run for gates. Even the aesthetic appearance contributes more inclination for grade 304.
Grade 202 is a good cheaper option but its corrosion resistance property is not comparable to grade 304. For window grills and gates, Grade 304 is the best option if involved budget in a substantial issue.
It is quality versus cost concern. Grade 304 is a more viable strong suggestion if cost is not involved.
