Hot-rolled carbon steel bars: GOST 535-88, St. 3KP/3PS, St. 5PS as per GOST 380-94: Shapes (equal and unequal angles): Dimensions (mm): 20x20x3-4, 25x25x3-4, 32x32x3-4, 35x35x3-4, 25x25x2,5, 32x32x2,5, 35x35x2,5, 40x40x3-4, 40x40x5, 45x28x4, 50x32x4, in bundles up to 5 tons, with length up to 12000 mm (ª100 mm). Steel grade Mass fraction of elements, % C Mn Si S P Cr Ni Cu max max max max max 3KP 0,14-0,22 0,30-0,60 max 0,05 0,050 0,040 0,30 0,30 0,30 3PS 0,14-0,22 0,40-0,65 0,05-0,15 0,050 0,040 0,30 0,30 0,30 5PS 0,28-0,37 0,50-0,80 0,05-0,15 0,050 0,040 0,30 0,30 0,30 Steelgrade Mechanical properties Ultimate tensilestrength, N/mm2, min Yield strength,N/mm2, min Elongation,S5, %, min 3KP 360 235 27 3PS 370 245 26 5PS 490 285 20
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