EN 10025-3 steel plates are weldable fine grain structural steels in the normalized/normalized rolled delivery condition. EN10025-3 covers four steel grades S275, S355, S420 and S460. AlI the steel grades may be supplied in the following qualities as specified at the time of the enquiry and order: 

with specified minimum values of impact energy at temperatures not lower than -20℃, designated as N; 

with specified minimum values of impact energy at temperatures not lower than -50℃, designated as NL.

S275N S275NL S355N S355NL shall be classified as non-alloy quality steels, and the steel grades S420N S420NL S460N S460NL shall be classified as alloy special steels.

Application: EN 10025-3 steel plates (S275N S275NL S355N S355NL S420N S420NL S460N S460NL) are especially intended for use in heavily loaded parts of welded structures such as bridges, flood gates, storage tanks, water supply tanks, etc., for service at ambient and low temperatures.

EN10025-3 Steel Plate Chemical Composition
Grade	C	Si	Mn	P	S	V	Ni	N	Other
S420N	0.22	0.65	0.95-1.80	0.035	0.030	0.22	0.85	0.027	Nb 0.06 Al≥0.015 Ti 0.06 Cr 0.35 Mo 0.13 Cu 0.60
S420NL	0.22	0.65	0.95-1.80	0.030	0.025	0.22	0.85	0.027	Nb 0.06 Al≥0.015 Ti 0.06 Cr 0.35 Mo 0.13 Cu 0.60

EN10025-3 Steel Plate Yield Strength Min. (Mpa)
Thickness (mm)	≤16	16-40	40-63	63-80	80-100	100-150	150-200	200-250
S420N/S420NL	420	400	390	370	360	340	330	320

EN10025-3 Steel Plate Tensile Strength (Mpa)
Thickness (mm)	≤100mm	100-200mm	200-250mm
S420N/S420NL	520-680Mpa	500-650Mpa	500-650Mpa

EN10025-3 Steel Plate Min. Elongaion After Fracture
Thickness (mm)	≤16mm	16-40mm	40-63mm	63-80mm	80-200mm	200-250mm
S420N/S420NL	19%	19%	19%	18%	18%	18%

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