Difference between S275N and S460N steel plate

Jan 09, 2026 Mesaj bırakın

S275N and S460N are structural steels under EN 10025-3, for low-temperature use, with the key difference being strength: S460N offers a higher minimum yield strength (460 MPa) than S275N (275 MPa), making it suitable for heavier loads in bridges, cranes, and high-rise buildings, while S275N is for general structures, with 'N' indicating normalization for improved toughness at moderate low temperatures (around -20℃).

Chemical Composition of S275N


C	-	0.18
	-	0.40
	0.50	1.50
P	-	0.035
S	-	0.035
N	-	0.015
	-	0.05
V	-	0.05
	-	0.05
	0.020	-
	-	0.55
-	-	0.40

Chemical Composition of S460N


	0.20	0.23
	0.60	0.70
	1.70	1.80
	0.025	0.035
	0.015	0.025
	0.025	0.030
	0.020 (min, total)	0.020 (min, total)
	0.05	0.06
	0.12	0.15
	0.05	0.07

Mechanical Properties of S275N

				Charpy KV Longitudinal Min (J) at -20℃	Charpy KV Transverse Min (J) at -20℃
<= 16	275	370–530	23	47	31
16 < t <= 40	265	370–530	23	47	31
40 < t <= 63	255	370–530	23	47	31
63 < t <= 80	245	370–530	22	47	31
80 < t <= 100	235	370–530	22	47	31
100 < t <= 150	225	350–510	22	47	31
150 < t <= 200	215	350–510	22	47	31
200 < t <= 250	195	350–510	22	47	31

Mechanical Properties of S460N

				Impact Energy (min, J @ -20℃)
<=16	460	540-720	17	27
16<>	460	540-720	17	27
40<>	440	570-720	17	27
63<>	400	570-720	17	27
80<>	380	570-720	17	27
100<>	340	540-720	18	27

Strength: S460N is significantly stronger with a yield strength of 460 MPa, compared to S275N's 275 MPa yield strength (for thicknesses up to 16mm).

Applications: S460N is for high-strength needs like heavy machinery, bridges, and arctic offshore structures, while S275N is used in general buildings and pipelines.

Performance: S460N provides a higher strength-to-weight ratio, allowing for lighter designs.

Standard: Both are normalized (N) structural steels from EN 10025-3, designed for good weldability and toughness in cold conditions.

Microstructure: Both have fine-grain microstructures for strength.