P355NL2 Alloy special quality steel heat treatment

P355NL2 steel is fine grained structural steel, which also is a pressure vessel steel grade with good welding property and high resistance to brittle cracking. P355NL2 steel belongs to standard EN1028-3. P355NL2 steel is used by world fabricators to the manufacture of pressure vessels.

The chemical composition of steel P355NL2 is as following, in these steel often many micro elements were added in, like Cr, Cu, V, Mn and so on.

C	Si	Mn	P	S	AL	N	Cr
Max 0.18	Max 0.50	Max 1.10-1.70	Max 0.020	Max 0.010	Minimum 0.020	Max 0.012	Max 0.30
Cu	Mo	Nb	Ni	Ti	V	(Nb+Ti+V)
Max 0.30	Max 0.08	Max 0.05	Max 0.50	Max 0.03	Max 0.10	Max 0.12

P355NL2 (1.1106) is a kind of Alloy special low temperature quality steel, so its heat treatmen is very special as following:

+A	Soft annealed	+PE	Peeled
+AC	Annealed to achieve the of the carbides	+QA	Air quenched and tempered
+AR	As rolled	+QL	Liquid quenched and tempered
+AT	Solution annealed	+QT	Quenched and tempered
+C	Cold drawn / hard	+S	Treated to improve shearability
+CR	Cold rolled	+SH	As rolled and turned
+FP	Treated to ferrite-pearlite structure and hardness range	+SR	Cold drawn and stress relieved
+I	Isothermal annealing	+T	Tempered
+LC	Cold drawn / soft	+TH	Treated to hardness range
+M	Thermo mechanical rolling	+WW	Warm worked
+N	Normalized	+U	Untreated
+NT	Normalized and tempered	+P	Precipitation hardened

BEBON is one of the largest distributors of structural steel all over the world. To know how we can support your specific applications and projects with P355NL2 steel, contact us freely.