Stainless Steel 316 - Alloy Composition

Stainless steel type 316 is part of a family of stainless steel alloys (301, 302, 303, 304, 316, 347). The 316 family is a group of austenitic stainless steels with superior corrosion resistance to 304 stainless steel. This alloy is suitable for welding because it has a carbon content lower than 301 to 303 series alloys to avoid carbide precipitation in welding applications. The addition of molybdenum and a slightly higher nickel content make 316 Stainless Steel suitable for architectural applications in severe settings, from polluted marine environments to areas with sub-zero temperatures. Equipment in the chemical, food, paper, mining, pharmaceutical and petroleum industries often includes 316 Stainless Steel.

Nominal Composition in Percentage:

            Ni                    12.00

            Cr                    17.00

            Mo                    2.50

            Fe                   Balance

            Si                     1.00

            Mn                    2.00

            C                     0.080

            P                     0.045

            S                     0.030

UNS Number:


Other Standard Specifications:

AMS 5524,-ASTM A313,ASTM A 580, MIL-S- 5059D

300 Series—austenitic chromium-nickel alloys


8.03 g/cm3 (0.290 lbs/in2)

Exceptional Properties:

Toughness, durability, corrosion reistance, weldability