Meproche N-475 / N-473 Nitriding Salt

Nitriding process is suitable for components/parts which have been finally machined and a hard case is to be imparted on them without distortions.

This is achived by formation of hard nitrides of iron on the top surfaces. However the layer of nitrides insulate further penetrations and therefore the case depth achievable is low and the process time is long.

MEPROCHE N-475 is a specially designed salt for nitriding components by salt-bath technique, which is much cheaper than gas-nitriding equipments. MEPROCHE N-473 is a salt which is added in the bath of Meproche N-475 base bath, to increase the percentage of cyanates, which get consumed.
Hence Meproche N-475 is a base salt and Meproche N-473 is a replenishment salt.