S420N Steel Grade, Mechanical Properties, Chemical Composition, Grade Equivalent

Standard: EN 10025-3 :2004 European standard for hot-rolled structural steel. Part 3 - Normalised/normalised rolled weldable fine grain structural steels.

Steel grade: S420N ;

Number: 1.8902 .

These steels are used for welded parts that have to withstand high levels of strain. Typical applications are bridges, pylons and other architectural structures.

The table below show the mechanical properties of grade S420N

 
Minimum yield strength Reh
MPa
Tensile strength Rm
MPa
Minimum elongation - A
Lo = 5,65 * √So (%)
Steel grade
Nominal thickness
mm
Nominal thickness
mm
Nominal thickness
mm
 
≤16
>16
≤40
>40
≤63
>63
≤80
>80
≤100
>100
≤150
>150
≤200
>200
≤250
≤100
>100
≤200
 >200
≤250
≤16
>16
≤40
>40
≤63
>63
≤80
 >80
≤200		 >200
≤250
S420N
420
400
390
370
360
340
330
320
520-680
500-650
 500-650
19
19
19
18
18
18

Notch impact test

Temperature
°C
-10
0
20
Min. absorbed energy
J
43
47
55

The table below show the chemical composition of grade S420N

 
Ladle analysis.
S - sulphur content of 0,010 % max. can be agreed in the order for all products with a thickness of ≤ 16 mm intended for railway construction.
The minimum value for the Al total content shall not apply if the steel contains sufficient quantities of nitrogen-fixing elements.
CEV maximum carbon equivalent value CEV = C + Mn / 6 + (Cr + Mo + V) / 5 + (Cu + Ni) / 15
Steel grade
C
max.
%
Si
max.
%
Mn
%
P
max.
%
S
max.
%
N
max.
%
Al
total
%
Cu
max.
%
Cr
max.
%
Ni
max.
%
Mo
max.
%
Nb
max.
%
V
max.
%
Ti
max.
%
CEV
max. %
Thickness (mm)
5 - 80
5 - 63
63 - 80
S420N
0,20
0,60
1,00 - 1,70
0,030
0,025
0,025
0,020
0,55
0,30
0,80
0,10
0,050
0,20
0,05
0,48
0,50

S420N Steel Grade Equivalent Table

Germany
DIN,WNr
DIN 17102:1983
France
AFNOR
NFA 36 201:1992
China
GB
Russia
GOST
Italy
UNI
StE420
E420R
Q420D
16G2AF
FeE355KTN

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