Ключевые слова:
Copper, Copper alloys, Bars (materials), Hollow, Circular shape, Free-machining alloys, Designations, Ordering, Chemical composition, Compositional tolerances, Mechanical properties of materials, Tensile strength, Proof stress, Elongation, Hardness, Residual stresses, Corrosion resistance, Dimensions, Diameter, Thickness, Length, Dimensional tolerances, Form tolerances, Mechanical testing, Corrosion tests, Stress corrosion, Hardness testing, Test specimens, Sampling methods, Approval testing, Conformity