420NL

S420NL Steel Plate EN 10025 -  3: 2004   1.8912

S420NL – offers high yield and tensile strength with a minimum yield strength of 420 N/mm². Structural steels with guaranteed fine grain structure and low carbon equivalent. Because of the yield strength up to 420 MPa and impact energy guaranteed at temperature -50 °C these steels are suitable for more demanding steel structures and their supporting elements. They are suitable for construction of railway, construction of offshore structure and motor vehicles, too.

S420 Structural Steel is a Hot-rolled products in weldable fine grain steels. These grades are supplied in  normalized/normalized rolled steels delivery conditions


Chemical composition %   of grade   S420NL (1.8912)

  • Nominal thickness =< 63(mm) CEV max = 0.48
  • Nominal thickness from 63 to 100 (mm CEV max = 0.50
  • For long products the P and S content can be 0.005% higher
  • For railway application a maximum S content of 0.01% may be agreed at the time of inquiry and order
  • In sufficient other N-binding elements are present the minimum total Al content does not apply
  • Cu content above 0.4% may cause hot shortness during hot forming

 

C
Si
Mn
Ni
P
S
Cr
Mo
V
N
Nb
Ti
Al
Cu
CEV
max 0.2
max 0.6
1 – 1.7
max 0.8
max 0.025
max 0.02
max 0.3
max 0.1
max 0.2
max 0.025
max 0.05
max 0.05
max 0.02
max 0.55
max 0.52


Mechanical properties of grade   S420NL (1.8912)

Nominal thk (mm):
to 100
100 – 200
200 – 250
Tensile strength (MPa)
520-680
500-650
500-650

 

Nominal thk (mm):
to 16
16 – 40
40 – 63
63 – 80
80 – 100
100 – 150
150 – 200
200 – 250
Minimum yield strength (MPa)
420
400
390
370
360
340
330
320

 

KV – Impact energy (J) longitud., (+N)
+20°
-10°
-20°
-30°
-40°
-50°
63
55
51
47
40
31
27
KV – Impact energy (J) transverse, (+N)
+20°
-10°
-20°
-30°
-40°
-50°
40
34
30
27
23
20
16

 

Nominal thickness (mm):
to 16
16 – 40
40 – 63
63 – 80
80 – 200
200 – 250
A – Min. elongation Lo = 5,65 √ So (%)
19
19
19
18
18
18


Equivalent grades of grade   S420NL (1.8912)

USA
Germany
France
England
European old
China
-
DIN,WNr
AFNOR
BS
EN
GB
A572Gr.60
TStE420
E420FP
50F
FeE420KTN
Q420E
A633E
A633Gr.E
A738Gr.C

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