Rounds Hot-Rolled bars of Circular cross-section

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
Steel grade	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

Rounds-Hot-rolled-bars-of-circular-cross-section

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