Chemical composition % of the ladle analysis   of grade   S420N (1.8902)Nominal thickness =< 63(mm) CEV max = 0.48Nominal thickness from 63 to 100 (mm) CEV max = 0.50For long products the P and S content can be 0.005% higherFor railway application a maximum S content of 0.01% may be agreed at the time of enquiry and orderIn sufficient other N-binding elements are present the minimum total Al content does not applayCu 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

Mechanical properties of grade   S420N (1.8902)

Nominal thickness (mm)

to 16 16 - 40 40 - 63 63 - 80 80 - 200 200 - 250

A - Minimum elongation Lo = 5,65 √

So (%)

19 19 19 18 18 18

Nominal thickness (mm)

to 16 16 - 40 40 - 63 63 - 80 80 - 200 200 - 250

ReH - Minimum yield strength (MPa)

420 400 390 370 360 340

Nominal thickness (mm) to 100 100 - 200 200 - 250

Rm – Tensile Strength (mpa) 520-680 500-650 500-650

Temperature -10 0 20

Notch impact test.Min. absorbed energy

43 47 55

Equivalent grades of grade   S420N (1.8902)GermanyDIN,WNr

FranceAFNOR

ChinaGB

RussiaGOST

StE420 E420R Q420D 16G2?F

    Grade :     S420N

    Number:     1.8902

    Standard:EN 10025 - 3 : 2004   Technical delivery conditions for normalized/normalized rolled weldable fine grain structural steels

    Classification:     Normalized rolled weldable fine grain structural steels

S420N (1.8902)  S420N steel is a good weldability structural steel grade. General requirements for arc welding of the steels specified shall be as given in EN 1011-2.Compare the S355N, S420N steel grade has more yield and tensile strength. The equal grade of S420N is S420M. Gangsteel has much experience in manufacture S420N. we cooperated with wuyang mill of HBIS to produce the max thickness 300mm in electroslag remelting technical. Our advantage is that we could supply goods in the fastest delivery time, even in one plate in usual specification.

 About S420N steel detail information，please refer to technical date in following. The Chemical is max composition of product analysis: 

Grade C % Si % Mn % P % S % V % AL % Cr %

S420N

0.200 0.600 1.0-1.7 0.030 0.025 0.020 0.020 0.300

Cu % Mo % Nb % Ni % Ti % N %

0.550 0.100 0.050 0.800 0.050 0.025

   The mechanical properties steel plate 

Grade Thickness(mm) Min Yield (Mpa) Tensile(MPa) Elongation(%)Min Impact

Energy

S420N

8mm-100mm 360Map-420Mpa 520-680Mpa 19% -20 40J

101mm-200mm 330Mpa-360Mpa 500-650Mpa 18% -20 40J

201mm-250mm 320Mpa-330Mpa 500-650Mpa 18% -20 40J

The min impact energy is longitudinal energy