304 Stainless Steel Corrosion Testing

In this work pitting corrosion of the stainless steel aisi 304 was tested in chloride solutions without the presence and in the presence of sulphate or nitrate ions.

304 stainless steel corrosion testing.

The tinting colours show a change of the corrosion potentials. If it is necessary annealing is the most effective way to restore non magnetic property and enhance corrosion. The investigations are conducted on the most common stainless steel type aisi 304 1 4301 of surface conditions 2b skin pass and 2r bright annealed with different tinting colours artificially produced using a furnace. Testing of pitting corrosion of stainless steels is performed using chemical and electrochemical methods.

The stainless steel we commonly use in our stainless casters is 304. Intergranular corrosion in the 800 f to 1500 f 427 c to 816 c range may cause precipitation of chromium carbides in grain boundaries. The alloy 304l stainless steel pipe is preferred for use in such media in the welded condition since the low carbon level enhances resistance to intergranular corrosion. The result shows that an aerated solution has much lower concentrations of pits compared to quiescent solutions.

Before permanent installation test the equipment with the chemicals and under the specific conditions of your application. These areas are relatively prone to rust in a corrosive environment. After cold work the process of stamping forming surface polishing etc a stainless caster usually becomes magnetic in the worked areas. To overcome these challenges the effect of surface finishes and aeration of the test solution on the corrosion behavior of 304 stainless steel specimens in 6 ferric chloride were examined and compared.

Controlled aeration eliminates unwanted crevice corrosion background noise. Tests are conducted on bare bars and bars symmetrically embedded in a mortar cylinder.