Dojran Steel produces round bars (rounds) at several lengths, mainly of 6 meters and with diameters from Ø9mm to Ø40mm. Rounds are intended for traditional railing makers, screw makers, mechanical equipment manufacturers, etc.
Chemical composition and mechanical characteristics | ||||||
Steel grade | Chemical composition | Mechanical characteristics | ||||
C (%)
max |
P (%)
max |
S (%)
max |
Yield strength
(N/mm2) min |
Tensile strength
(N/mm2) |
Elongation
5d0, (%) min |
|
S235JR (St 37-2) | 0.170 | 0.040 | 0.040 | 235 | 360-510 | 26 |
S275JR (St 44-2) | 0.210 | 0.040 | 0.040 | 275 | 410-560 | 23 |
Dimensions, weight and tolerances | ||||
Diameter
d (mm) |
Permissible diameter deviation
(mm) |
Nominal cross-section
(cm2) |
Nominal weight
(kg/m) |
Nominal surface area
(cm2/m) |
9 | ± 0.4 | 0.636 | 0.499 | 283 |
10 | ± 0.4 | 0.785 | 0.617 | 314 |
12 | ± 0.4 | 1.13 | 0.888 | 377 |
14 | ± 0.4 | 1.54 | 1.21 | 440 |
16 | ± 0.4 | 2.01 | 1.58 | 503 |
18 | ± 0.5 | 2.54 | 2.00 | 565 |
20 | ± 0.5 | 3.14 | 2.47 | 628 |
22 | ± 0.5 | 3.8 | 2.98 | 691 |
25 | ± 0.5 | 4.91 | 3.85 | 785 |
28 | ± 0.6 | 6.16 | 4.83 | 880 |
30 | ± 0.6 | 7.07 | 5.55 | 942 |
35 | ± 0.6 | 9.62 | 7.55 | 1,100 |
40 | ± 0.8 | 12.6 | 9.86 | 1,260 |