EN 10025-3:2019 S420NL Steel: Specifications & Listings
EN 10025-3:2019 S420NL: S420NL: weldable fine grain structural steel, normalized or normalized rolled with impact values to -50 deg C. Specified in EN 10025-3:2019.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
C
Si
Mn
P
S
Nb
V
Ni
N
Al
Ti
Cr
Mo
Cu
<=0.20
<=0.60
1.00-1.70
<=0.025
<=0.020
<=0.05
<=0.20
<=0.80
<=0.025
>=0.02
<=0.05
<=0.30
<=0.10
<=0.55
Mechanical Properties
Tensile Strength
520-680 MPa
Yield Strength
>=420 MPa
Elongation
>=19%
Condition
Normalized or normalized rolled (N), nominal thickness up to 16 mm (tensile strength up to 100 mm), Table 4
More data from EN 10025-3:2019
From the standard
Yield strength by thickness8 thickness ranges
Nominal thickness (mm)
Yield strength ReH, min (MPa)
up to 16
420
over 16 to 40
400
over 40 to 63
390
over 63 to 80
370
over 80 to 100
360
over 100 to 150
340
over 150 to 200
330
over 200 to 250
320
For plate, strip and wide flats of width 600 mm and over the values apply transverse to the rolling direction; for other products parallel.
Source: EN 10025-3:2019, Table 4
Tensile strength by thickness3 thickness ranges
Nominal thickness (mm)
Tensile strength Rm (MPa)
up to 100
520 to 680
over 100 to 200
500 to 650
over 200 to 250
500 to 650
Delivery condition normalized or normalized rolled (N).
Source: EN 10025-3:2019, Table 4
Elongation by thickness6 thickness ranges, L0 = 5.65 sqrt(S0)
Nominal thickness (mm)
Elongation A, min (%)
up to 16
19
over 16 to 40
19
over 40 to 63
19
over 63 to 80
18
over 80 to 200
18
over 200 to 250
18
Source: EN 10025-3:2019, Table 4
Impact energy KV2, min (J)Charpy V-notch, longitudinal and transverse
Test piece
+20 deg C
0 deg C
-10 deg C
-20 deg C
-30 deg C
-40 deg C
-50 deg C
Longitudinal
63
55
51
47
40
31
27
Transverse (Option 30)
40
34
30
27
23
20
16
Values reduced in direct proportion for subsized specimens.
Source: EN 10025-3:2019, Tables 5 and 6
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