Stainless Steel AISI 304 / 1.4301

The stainless steel type AISI 304 is the most adaptable and most used of the stainless steel range.

One of the main features of AISI 304 is of its excellent corrosion resistance, especially in environments where corrosive elements are prevalent. Care should be taken however; when subjecting stainless to environments containing chlorides.

When fabricating, only tools devoted for the use with stainless steels should be used. Tools and work areas should be thoroughly cleaned before fabrication commences. This is a necessary precaution to avoid contamination of the stainless steel from other metals which may ultimately result in discoloration to the surface of the fabricated item.

The stainless steel type AISI 316 differs from AISI 304 in that molybdenum is added giving greater corrosion resistance. This is especially evident for pitting and deep corrosion in warm chloride conditions.

AS AISI 304, 316 has exceptional resistance to corrosion, but is not resistant to warm sea water.

Both grades of steel are affected by corrosion stress/cracking at temperatures of 60°C and above.