What’s the difference between 304 and 316 stainless steel?

The natural response is 304, which includes 18% chromium and 8% nickel, while 316 contains 16% chromium, 10% nickel, and 2% molybdenum. Add molybdenum to assist withstand chloride corrosion (such as seawater and de-icing salts). As a general reference for the use of stainless steel in our region, I discovered the brochure Stainless Steel for Coastal and Salt Corrosion Applications very helpful.

304 Stainless Steel

Stainless steel grade 304 is usually considered to be the most prevalent stainless steel austenitic steel. It includes high nickel content, typically between 8 and 10.5% by weight, and elevated chromium content at about 18 to 20% by weight. Manganese, silicon, and carbon are other significant alloy components. The rest of the chemical composition is mainly iron.

316 Stainless SteelSimilar to 304, there are high quantities of chromium and nickel in grade 316 stainless steel. 316 also includes silicon, manganese, and carbon, most of which is iron. The chemical composition is a significant distinction between 304 and 316 stainless steel, with 316 containing a substantial quantity of molybdenum; typically 2 to 3 percent by weight vs. only trace quantities observed in 304 — the higher content of molybdenum outcomes in a grade 316 with enhanced resistance to corrosion.

Difference between 304 and 316 stainless steel

By just looking at it, you can't say. There is no noticeable distinction between two identical pieces of sheet metal, the same precise manner a polished or grained one. Therefore, to validate it as 304 or 316, you need a material test report (MTR) of the original material. We ensure that we receive one with each delivery that we receive at Nema Enclosures so that we can guarantee our clients that the enclosure and its components are made of the precise stainless steel material as indicated and ordered. Some tiny sections like clamps and mounting feet made of 316 stainless steel are specifically labeled, in this situation, as shown in the picture above, a number 6 within a circle.

Type 304 stainless steel And Uses of 304?

Type 304 is the most versatile and commonly used of austenitic stainless steels, with its chromium-nickel content and low carbon content. Its plastics are all 18% chromium alloy changes, 8% austenitic nickel alloy. Type 304 is proven to be oxidation, corrosion, and durability resistant. All provide ease of manufacturing and cleaning, a range of finishes and appearances are available to prevent product contamination. Type 304 stainless steel are used in electrical enclosures that are resistant to corrosion, auto molding, and trimming, wheel enclosures, kitchen machinery, hose clamps, exhaust manifolds, stainless hardware, storage tanks, pressure vessels, and piping.

Type 316 stainless steel And Uses of 316?

Type 316 stainless steel is an austenitic stainless and heat-resistant chromium-nickel steel with superior resistance to corrosion relative to other chromium-nickel steels when subjected to many kinds of chemical corrodents such as marine water, brine solutions, and the like. Since the stainless steel alloy type 316 includes molybdenum-bearing, it has a higher chemical attack strength than 304. Type 316 is durable, easy to manufacture, tidy, welded, and finished. It is much more resistant to elevated temperature alternatives such as sulfuric acid, chlorides, bromides, iodides, and fatty acids.

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