Steel Plates for General Structure

Steel Plates for General Structure

Main Application

Steel plates for general structure are widely used in engineering structures such as steel structure buildings, construction machinery, heavy duty cars, bridges, wind power， pressure vessels and so on

Delivery conditions

Hot rolled, normalized, normalized rolled, TMCP, ect.

Steel Grades

Category	Grade	Standard	Remarks
Carbon structural steels	Q23\|Q345R-R-HIC\|/B/C/D/E	GB/T 3274 GB/T 700	Chinese standards
	SS400	JIS G3101	Japanese standards
	SM400A/B	JIS G3106	Japanese standards
	S235JR/J0/J2/+AR/+N	EN10025-2:2004	European standards
	A36、A283C	ASTM A36M ASTM A283M	American standards
	St37-2、St44-2	DIN 17100-1980	German standards
Hot-rolled quality carbon structural steel plates	20、30、35、45、50、 10、20Mn、65Mn	GB/T 711	Chinese standards
Hot-rolled quality carbon structural steel plates	S45C、S50C	JIS G4051	Japanese standards
High strength low alloy structural steels	Q355（Q345）etc.	GB/T 3274 GB/T 1591	Chinese standards
	Q390、Q420、Q460、Q500、 Q550、Q620、Q690 etc.	GB/T 3274 GB/T 1591	Chinese standards
	S275JR/J0/J2/+AR/+N	EN10025-2	European standards
	S355JR/J2/J0/K2+AR/+N	EN10025-2	European standards
	43A、50B/C/D	BS 4360-1986	British standards
	A572Gr50、A572Gr60、A572Gr65	ASTM A572/A572M	American standards
	A573Gr70	ASTM A573/A573M	American standards
	AS/NZS 3678-350	AS/NZS3678	Australian standards
	Gr300W	CAN/CSA G40.21	Canadian standards
	SS490	JISG3101	Japanese standards
	SM490A/B/YA	JISG3106	Japanese standards

Chemical Composition Maximum (%)

Grade	C	Si	Mn	P	S	others
Q235B	0.20	0.30	0.70	0.045	0.045	Moderate
Q355B	0.24	0.55	1.60	0.035	0.035	Moderate
Q390B	0.20	0.55	1.70	0.035	0.035	Moderate
SS400	-	-	-	0.050	0.050	Moderate
SS490	0.20	0.55	1.60	0.035	0.035	Moderate
S235J2	0.17	-	1.40	0.025	0.025	Moderate
S275J2	0.20	-	1.50	0.025	0.025	Moderate
S355J2	0.22	0.55	1.60	0.025	0.025	Moderate
A572Gr50	0.23	0.40	1.35	0.030	0.030	Moderate
SM490A	0.22	0.55	1.65	0.035	0.035	Moderate
A36	0.25	0.40	1.20	0.040	0.050	Moderate
45	0.50	0.37	0.80	0.035	0.035	Moderate
Q345GJB	0.20	0.55	1.60	0.025	0.015	Moderate

Mechanical Properties

Grade	Yield Strength ReL，MPa Min	Tensile Strength Rm，MPa	Elongation		Impact Absorbed Energy,A_kv Longitudinal		Bend 180°
Grade	Yield Strength ReL，MPa Min	Tensile Strength Rm，MPa	Gauge length	% Min	Temp，℃	J Min	Bend 180°
Q235B	235	370～500	A5	26	20	27	OK
Q355B	355	470～630	A5	20	20	34	OK
Q390B	390	490～650	A5	20	20	34	OK
SS400	245	400～510	1A	17	-	-	OK
SS490	285	490～610	1A	15	-	-	OK
S235J2	235	360～510	A5	24	-20	27	OK
S275J2	275	430～580	A5	21	-20	27	OK
S355J2	355	510～680	A5	20	-20	27	OK
A572Gr50	345	450～	A50	21	20	34	OK
SM490A	325	490～610	5 号	19	20	27	OK
A36	250	400～550	A 50	23	20	34	OK
45	-	600～	A5	17	20	27	OK
Q345GJBa	345	490～610	A5	22	20	34	OK

a： Z-axis performance according to related standards such as GB/T5313 or EN10164 or ASTM A770.

b : Yield strength type of Q355B is R_eH .

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