Umaxe 660 is used in the above working range for Hardening of various Carbon steels, Alloy steels, Tool steels and for pre heating the High speed steels and Hot working Die steels before treating them in Umaxe 970.The bath gives Freedom from Decarburization and Umaxe 660 is less soluble in Water. Umaxe Regenerator is used at the rate of 225 Gms per 100 kgs of Umaxe