A low-cost granular mixture of nitrates formulated for tempering steels where the lower melting point and wider working range of AL-2 are not needed. Like AL-2, AL-3 is a highly fluid bath that offers low dragout because of its fast drainage properties. It is another non-chloride alternative. Information provided by Heatbath Corporation - Park Metallurgical. Heatbath/Park has been acquired by DuBois Chemicals. |