Ключевые слова:
Grades (quality), Weldability, Impact strength, Structural steels, Designations, Unalloyed steels, Chemical composition, Metal sections, Steels, Inspection, Tensile strength, Hot-working, Elongation, Strength of materials, Rolling, Steelmaking, Sampling methods, Test specimens, Marking, Testing conditions, Sheet materials, Sample location, Testing, Semi-finished products, Strips, Bars (materials), Yield strength