What is the chemical composition of Q355B steel?

Jun 18, 2020

Grade: Q355B

Relative material: Q355C, Q355D,Q355NB, Q355NC, Q355ND, Q355NE

Standard: GB/T1591-2018

Equivalent: Q345B, S355JR

Category: low alloy structural steel

Q355B

chemical composition(%) of Q355B steel

Material	C max.	Si max.	Mn max.	P max.	S max.	Cr max.	Ni max.	Cu max.	N max.
Q355B	0.20	0.55	1.60	0.030	0.030	0.30	0.30	0.40	0.012

Q355B steel plates delivery status

Q355B steel plate is delivered in the state of controlled tying, normalizing, normalizing + tempering, thermomechanical rolling (TMCP), etc. If necessary, Z-direction performance tests are required according to customer needs, such as Q345B-Z15, Q345B-Z25, Q345B-Z35 etc. The flaw detection level has the first, second and third national standard detection.

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