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
