The development of armored aluminum alloys of the Research Institute of Steel began in the early 60s in connection with the creation of light floating tanks and BMD. Heat-strengthened deformable welded alloys of the Al-Zn-Mg system of the ABT-101 and ABT-102 grades, created for these purposes, have a strength level of 450-500 MPa, providing an almost 25% reduction in the mass of the armored hull in comparison with steel armor. In the early 80s, on the basis of these materials, heterogeneous aluminum armor PAS-1 and PAS-2 was created at the Research Institute of Steel, in which it was possible to realize strength at the level of 600 MPa. All these materials are used in BMD-1, BMD-2, BMD-3, BMD-4, BMP-3 and advanced LBM.
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