446 is a ferritic heat resisting steel useful up to 1100°C.

446 stainless grade combines the following characteristics:

Good oxidation resistance
Excellent resistance to sulphidation particularly in reducing conditions.

Much better than austenitic heat resisting grades due to absence of nickel
Good resistance to molten copper, lead and tin
Poor high temperature strength
Weldable with austenitic electrodes

Applications include:

Glass making (float glass), metallurgical plant (copper processing), burners, annealing boxes,

kiln linings, thermocouple tubes, injection nozzles.