From a chemical or scientific standpoint the answer would be that 304 stainless steel contains 18% chromium and 8% nickel while 316 contains 16% chromium, 10% nickel and 2% molybdenum. The molybdenum is added to help resist corrosion. Type 304, with its chromium-nickel content and low carbon, is the most versatile and commonly used of the austenitic stainless steels. Stainless Steel Pipe, 304, 316 alloys, Seamless and WeldedStainless Steel Pipe. Pipe sizes can be confusing compared to "tube". For exact OD, ID and Wall download our Pipe Size Chart (PDF). Welded vs. Seamless Pipe. Welded pipe has the "flash" or seam removed from the outside diameter and generally has little or no evidence of a weld. Seamless pipe can withstand greater pressures and is commonly used
These quality hex head bolts are available in both type 304 and type 316 stainless steel. Standard diameter sizes range from 1/4" up through 1". Bigger and smaller sizes are available by request. Length is measured from underneath the head. Longer bolts won't be fully threaded. Please select the category type Type 304 vs Type 316 Stainless Steel Sinks and Faucets Jun 13, 2017 · This type is easy to form and fabricate with excellent resistance to corrosion. Type 316 is the second most common grade (after 304) but with the addition of 2-3% molybdenum. The addition of molybdenum and a slightly higher nickel content make Type 316 Stainless Steel suitable for architectural applications in severe settings.