The Cr-Ni-Mo austenitics are molybdenum bearing austenitic stainless steels having very good corrosion resistance in many aggressive environments.

The molybdenum addition ensures more resistance to pitting and crevice corrosion in chloride containing media, sea water and chemical environments such as sulphuric acid compounds, phosphoric and acetic acids.

The lower rate of general corrosion in mildly corrosive environments gives the steel good atmospheric corrosion resistance in polluted marine atmospheres. As they are austenitic, they have excellent ductility, formability and toughness even at sub-zero temperatures.

U-316L-1.4404 has a low carbon content to minimise the problem of carbide precipitation during welding and permits the use of the steel in the as-welded condition in a wide variety of corrosive applications.

This grade also complies to the requirements of 1.4402 which has been specifically designed for use in tank containers and has enhanced mechanical properties to aid in tank container design.

U-316L-1.4435 has a higher molybdenum content than U-316L-1.4404 and this improves the pitting and crevice corrosion resistance even further.

U-316LN has a higher nitrogen content to improve the strength.

U-316Ti is a titanium stabilised version of U-316L-1.4404 and is used for its resistance to sensitisation during prolonged exposure to temperatures between 550°C and 800°C.