Chinese Q235B equivalent to which ASTM material

The steel materials usually have equivalent grades under other standard specifications. Especially the common steel grades, they usually have a lot of equivalents in different regions. In China, Q235B steel and Q345B steel are such common steel.

Chinese Q235B equivalent to which ASTM material? The answer is ASTM A36 steel.

Chinese Q235B and ASTM A36 steel plates comparison ( 5-125mm Thk ):

Chinese Q235B and ASTM A36 steel plates chemical composition %:

Grade	C	Mn	P	S	Si	Cu
A36	0.26	-	≦0.040	≦0.050	≦0.40	≧0.20
Q235B	0.12-0.20	0.30-0.70	≦0.045	≦0.045	≦0.30	-

Chinese Q235B and ASTM A36 steel plates mechanical properties:

Grade	Yield strength	Tensile strength	Extension
	MPA	MPA	%
A36	≧250	400~550	≧20
Q235B	≧235	375~460	≧21

Chinese Q235B equivalent to ASTM A36 material. They have similar chemical composition and close mechanical properties. They can be used to replace each other under some conditions but not for all. For specific application, it is better to check with the engineer or technician, or BBN steel team.