What is equivalent grades to US. A36 steel in Chinese specifications ?

Carbon structural steel materials grade ASTM A36 is most common used in industrial field as oil and gas plants,bolted,riveted and welded for bridges because of A36 low yield strength for easier forming.This steel grade ASTM A36 and ASME SA36 demand huge all the world.

 

So which steel grade is equivalent to us.A36 steel in Chinese specifications ? Xinsteel’s answer is the best grade Q235B in steel specification GB/T 700 which steels is for general structure.Both these two grades Q235B and A36 are mild steel only without more alloy elements,and owned low strength yeild and tensile for easy welding.

 

Comparasion of ASTM A36 steel and GB/T 700 Q235B as below table:

Carbon steel grades Q235B vs A36		Chemical composition: Heat Analysis  Max%
Standard	Grade	C	Mn	P	S	Si	Cu
ASTM A36/A36M	A36	0.25	/	0.040	0.050	0.40	/
GB/T 700	Q235B	0.20	1.40	0.045	0.045	0.35	/
Mechanical Properties:		Thickness		Yield strength		Tensile strength
				Mpa  Min.		Mpa
ASTM A36/A36M	A36	T≤200		250		400-550
GB/T700	Q235B	T≤16		235		370-500