Among the known standardized bronze grades, there are currently no foundry structural bronzes that would simultaneously combine both non-magnetism and corrosion resistance, in particular, in tap water and seawater. The presence of bronze with such a list of preferential properties will allow not only to expand the boundaries of bronzes as a structural material using, but also to provide prospects for increasing and expanding the technical and technological capabilities of new equipment and technologies in the field of shipbuilding, aircraft construction, instrument making, etc. Today, the only bronze with such a list of properties is aluminum bronze BrA7K2O1.5Mts2, in which, nevertheless, corrosion resistance in comparison with known standardized bronze grades has not yet been studied. All bronzes studied in this work, except for bronze BrO6C6C3, are absolutely stable in warm standing tap water with a cyclic change in temperature from 30 to 50 С. With the exception of BrA9Zh3L bronze brand, all other bronzes studied in the work are stable in warm standing artificial seawater with a daily change in temperature from 30 to 50 °С and on a ten-point scale have the 4th point of corrosion resistance. The greatest corrosion resistance is possessed by bronze BrA7K2O1.5Mts0.3 with a value of KR = 0.47…0.63. Corrosion in samples of BrA7K2O1.5Mts0.3 bronze, which are after their heat treatment and without heat treatment, is equally continuous. Bronze BrA7K2O1.5Mts0.3 without heat treatment in cold standing artificial seawater is more corrosion-resistant if it is cast in a chill mold. At the same time, in all corrosive environments used in the work, the corrosion resistance of bronze BrA7K2O1.5Mts0.3 is more affected by its heat treatment than by in its chemical composition changing. Further development was received by ideas about the corrosion resistance of non-magnetic structural cast aluminum bronzes in tap water and artificial seawater, taking into account the initial state of the bronzes and the corrosive environment condition. For the first time, in comparison with standardized corrosion-resistant bronze grades, data were obtained on the corrosion rate of “as-cast” and heat-treated non-magnetic bronze BrA7K2O1.5Mts0.3 in warm tap water, warm and cold artificial sea water. This will allow making a well-founded choice of bronzes for the operation of products made of them in the environments and conditions used in this work or close to them. This will save time, financial costs and material resources for developers of new machines, assemblies and units to make a rational or optimal technical decision regarding a rational product material.
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