CLC 17-13-5LN (317LNM) is a Nitrogen alloyed austenitic stainless steel with a high Molybdenum content (> 4%). CLC 17-13-5LN (317LNM) has an austenitic microstructure, free of deleterious carbide precipitations at grainboundaries. The grade contains some residual ferrite after solution annealing (1100 - 1150°C / 2012 -2102°F) and water quenching.

Because of its higher molybdenum content, this steel has a higher resistance to corrosion in chloride containing environments than standard grades (CLC17-12-2L / 316L). Nitrogen additions and a low silicon content have a stabilizing effect on the austenitic structure and reduce the precipitation of inter-metallic phases during welding. Nitrogen addition also increases the yield strength compared to CLC 18-15-4L (317L).

Its main properties are : high mechanical properties, high ductility, good weldability and excellent corrosion resistance.

The main applications are chemical and petrochemical applications, pollution control equipments and chemical tankers.