Open Fire Solution Annealing
Solution Annealing treatments are applied to a variety of alloy steel and stainless steel compositions. Solution annealing of 300 series stainless steel castings produces a uniform microstructure free of carbides. Solution annealing of precipitation hardening cast and wrought alloys produces a soft microstructure suitable for machining to close tolerances. These alloys have the potential for Age Hardening after machining with minimal distortion of close dimensional tolerances. These materials and processes are generally applied to medium strength requirements on turned or screw machine parts. The heat treatments may be performed in batch atmosphere furnaces. NATIONAL HEAT TREAT has 2 furnaces for this process.