304/304L Stainless Steel Sheet & Coil - Chemical

Stainless Steels Chromium-Nickel

Types 302 (S30200), 304 (S30400), 304L (S30403), 305 (S30500)

Chemical Composition
Element Percent by Weight
Maximum Unless Range is Specified
302 304 304L 305
Carbon 0.150 0.080 0.030 0.120
Manganese 2.000 2.000 2.000 2.000
Phosphorus 0.045 0.045 0.045 0.045
Sulfur 0.030 0.030 0.030 0.030
Silicon 0.750 0.750 0.750 0.750
Chromium 17.000
19.000
18.000
20.000
18.000
20.000
17.000
19.000
Nickel 8.000
10.000
8.000
10.500
8.000
12.000
10.500
13.000
Aluminum 0.100 0.100 0.100 --

Resistance to General Corrosion

Types 302, 304, 304L and 305 austenitic stainless steels provide useful resistance to corrosion on a wide range of moderately oxidizing to moderately reducing environments. The alloys are used widely in equipment and utensils for processing and handling of food, beverages and dairy products. Heat exchangers, piping, tanks and other process equipment in contact with fresh water also utilize these alloys. Building facades and other architectural and structural applications exposed to non marine atmospheres also heavily utilize the 18-8 alloys. In addition, a large variety of applications involve household and industrial chemicals.