Structural Steel

Quality Fe360 – S235JrC

This steel has substantial toughness, excellent workability and weldability, mediocre mechanical strength, good heat resistance, fair hardness and poor humidity resistance. It is suitable for economic parts of machines and metallic structures that are generally not very stressed and do not have demanding features. It is generally used cold drawn.

Chemical composition

C max	C max	C max	Mn	P	S	Si	N
≤ 16 mm	> 16 ≤ 40 mm	> 40 mm	max	max	max	max	max
0,17	0,17	0,20	0,40	0,045	0,045	0,00	0,009

Mechanical properties

Thickness mm	Hardness HB	Rm (MPa)	Rp 0,2 minimum (MPa)	Rm (MPa)	A5 % minimum
≥ 5 ≤ 10	-	-	355	from 470 to 840	8
> 10 ≤ 16	-	-	300	from 420 to 770	9
> 16 ≤ 40	from 102 to 140	from 360 to 510	260	da 390 to 730	10
> 40 ≤ 63	from 102 to 140	from 360 to 510	235	from 380 to 670	11
> 63 ≤ 100	from 102 to 140	from 360 to 510	215	from 360 to 640	1

Quality Fe510D – S355J2

Structural steel for excellence, with high mechanical strength and excellent resilience. It is suitable for use in extreme conditions and in cold temperatures to -20°C. It is also suitable for metallic structures, cranes, machinery frames, etc.

Chemical composition

C max	C max	C max	Mn	P	S	Si	N
≤ 16 mm	> 16 ≤ 40 mm	> 40 mm	max	max	max	max	max
0,20	0,20	0,22	1,60	0,025	0,025	0,55	0,55

Mechanical properties

Yield point, Reh (MPa) min	355	355	345	335	325	135	295	285	275	265
Tensile strength Rm(MPa) min	510	470	470	470	470	470	450	450	450	450
Tensile strength Rm(MPa) max	680	630	630	630	630	630	600	600	600	600
Elongation A(%) min	22	22	22	21	20	20	18	17	17	17
Resilience Kv -20°C (J) min	27	27	27	27	27	27	27	27	27	27