ASTM B 918/B 918Ma

This practice is intended for use in the heat treatment of wrought aluminum alloys for general purpose applications. Aluminum alloys are typically heated in air chamber furnaces or molten salt baths. Though lead baths, oil baths, or fluidized beds may be used, uncontrolled heating is not permitted. The furnace temperature uniformity and calibration shall conform to the specified requirements. Preparation for heat treatment of alloys shall follow the racking, spacing, and cleanliness requirements. Solution heat treatment shall follow the recommended soaking times and quenching procedures. Precipitation heat treatment shall conform to the prescribed times, temperatures, and annealing procedures. The alloys shall be subjected to tensile testing, eutectic melting and heat-treat-induced porosity analysis, intergranular corrosion test, and Alclad diffusion test.