Stainless Steel Half Coupling 316 is normally used for natural gas/petroleum/oil, aerospace, food and beverage, industrial, cryongenic, architectural, piping, and marine applications. 316 stainless has high strength and excellent corrosion resistance, including in marine or extremely corrosive environments. It is stronger, though less malleable and machinable than 304, 316 maintains its properties in cryogenic or high temperatures.