Q355NC steel under GB/T1591-2018 standard

Q355NC steel under GB/T1591-2018 standard is a low-alloy high-strength structural steel of Q355 steel. Q355NC steel is not only high strength steel, it is also low carbon steel. Q355NC has high strength, good fatigue resistance; high toughness and low brittle transition temperature; good cold forming performance and welding performance; has good corrosion resistance and certain wear resistance.
Q355NC steel chemical composition(%)

C max.	Si max.	Mn	P max.	S max.	Cr max.	Ni max.	Cu max.	N max.	Nb	V	Ti	Mo max	N max
0.20	0.50	0.90-1.65	0.030	0.030	0.30	0.50	0.40	0.012	0.005 - 0.05	0.01-0.12	0.006 - 0.05	0.10	0.015

Q355NC plate mechanical properties

Grade	Yield strength MPa in different thickness mm
	≤16	16-40	40-63	63-80	80-100	100-150	150-200	200-250
Q355NC	≥355	≥345	≥335	≥325	≥315	≥295	≥285	≥275

Tensile strength and elongation in different thickness mm

Grade	Tensile strength MPa			Elongation % min.
	≤100	100-150	150-250	≤16	16-40	40-63	63-80	80-200	200-250
Q355NC	470-630	450-600	450-600	22	22	22	21	21	21

 
Q355NC plate manufacturing method
Steel Q355NC is smelted by a converter or electric furnace, and can be refined outside the furnace if necessary. Unless the purchaser has special requirements and is indicated in the contract, the smelting method is generally selected by the supplier.
 
Q355NC plate delivery status
The Q355 steel is delivered in the state of hot rolling, normalizing, normalizing rolling or thermomechanical rolling (TMCP)
 
Q355NC size, shape, weight and allowable deviation
The size, shape, weight and allowable deviation of Q355NC comply with the relevant standards of GB/T709.
 

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