Stainless Steel 316

Stainless Steel 316 has slightly better corrosion resistance than 302 and 304, and also has better non-magnetic properties. Stainless Steel 316 shows excellent corrosion and oxidation resistance in a range of atmospheric environments and corrosive media.

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Stainless Steel 316 is also known as AISI 316.

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Thermal Properties

As far as stainless steel goes, you&#;ll notice that 316 and other steels under the austenitic category aren&#;t as thermally conductive as ferritic steels. The thermal conductivity value for 316 stainless steel is 16.3 W/mK, which is relatively low (just look at aluminum, which has a conductivity of 400W/mK). You can slightly impact that number depending on the structure and composition of the steel you&#;re working with.

This kind of material also expands and contracts more than others, and 316 stainless steel&#;s coefficient in particular between 20°C and 200°C is about 16.5 x 10-6/°C. One advantage you&#;ll find when it comes to working with extreme temperatures is that this kind of steel has a high melting point, ranging between 1,370°C to 1,400°C. It also has decent creep resistance, meaning you won&#;t have to deal with the steel becoming deformed under high temperatures.

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How 316 Stainless Steel Is Made

You&#;ll need an electric arc furnace (EAF) to create 316 stainless steel. This machine is where you&#;ll funnel in scrap steel and raw materials, as well as all the additional components that give the stainless steel its strength and corrosion resistance, including iron ore, chromium, nickel, and molybdenum.

Once you&#;ve popped these into the furnace, the electrodes heat up the metal and it turns into a molten material. The piping hot mixture can then be cast, cooled, and cut into whichever form you desire, whether that&#;s bars, rods, or sheets. 

Common Forms of 316 Stainless Steel 

You&#;ll find stainless steel available in many different forms, with these six being some of the most common.

1. Sheet

If versatility is what you&#;re after, sheets of stainless steel are hard to beat. These large, flat surfaces are cold-rolled, and you can cut them into a variety of sizes, with widths ranging from 0.5 mm to 6 mm. You may look to this format for many items you&#;d find in the kitchen, like cookware, grills, sinks, countertops, and refrigerator, dishwasher, and freezer finishes. 

2. Bar

Bars are also known as rods, and you can find them in cylindrical or rectangular shapes in several different widths or diameters. This type of SAE 316 stainless steel offers up the same properties as sheet metal, but bars can provide more strength and bear heavier loads. You&#;ll notice this kind of format in applications for construction and marine industries, and its finish is smoother and free of that well-known brushed texture found in homes.

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