304 Stainless Plate, the most widely used of the stainless and heat resisting steels. 304 stainless plate offers good corrosion resistance to many chemical corrodents as well as industrial atmospheres and marine environments Typical specifications. It can be become slightly magnetic when cold worked. It is easy to machine, stamp and weld. 304 stainless steel 2B finish is a mill finish, which is smooth and NOT the brushed finish commonly seen on kitchen appliances which is light gray in color. Applications: 304 stainless sheet is used for stamped and machined parts and components for processing equipment for the foodservice, medical device, chemical, petrochemical, marine and power transmission industries.