P355NL1 steel vs P355NL2 steel

　　P355NL1 steel and P355NL2 steel both are weldable fine gran steels for pressure purposes. These steel plates are supplied in normalized condition. For the chemical composition, there are subtle differences of phosphorus and sulphur content as follows.

　　P355NL1 steel vs P355NL2 steel in chemical composition(%)

Grades	No.	C max	Si max	Mn	P max	S max	Al(min)	N max	Cr max	Cu max	Mo max	Nb max	Ni max	Ti max	V max	Nb+Ti+ V max
P355NL1	1.0562	0.18	0.50	1.10-1.70	0.025	0.008	0.020	0.012	0.30	0.30	0.08	0.05	0.50	0.03	0.10	0.12
P355NL2	1.1106	0.18	0.50	1.10-1.70	0.02 0	0.005	0.020	0.012	0.30	0.30	0.08	0.05	0.50	0.03	0.10	0.12

　　For the mechanical properties, P355NL1 steel and P355NL2 steel plates have same tensile requirements at room temperature. The tensile strength minimum is 355MPa at thickness less than 16mm.

　　P355NL1 steel plate shall be done low temperature impacting test in transverse at -40 ℃ with impact energy min. 27J. P355NL2 steel plate shall be done special low temperature impacting test at -50℃.

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