S420 European Standard Steel
S420 EN 10025 : 2004 Standard Structural Steel Plate
S420 structural steel plate is a high-strength low-alloy European standard structural steel within the EN 10025 : 2004 standard. S420 structural steel plate is only produced as Normalized or Thermomechanical Rolled material.
Typical applications include:
- Power plants
- Mining and earth-moving equipment
- Load-handling equipment
For further information, please contact a Leeco Steel representative.
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Symbols used for EN 10025 - S420 |
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Part 3 - Normalised / Normalised Rolled Weldable Fine Grain Structural Steel |
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S… |
Structural Steel |
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420 |
Minimum yield strength (Reh) in Mpa up to 16mm |
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…N.. |
Longitudinal Charpy V-notch impacts at a temperature not lower than minus 20 Celsius |
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…NL.. |
Longitudinal Charpy V-notch impacts at a temperature not lower than minus 50 Celsius |
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Additional Options |
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…Z.. |
Grade with improved properties perpendicular to the surface |
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Part 4 - Thermomechanically Rolled Weldable Fine Grain Structural Steels |
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S… |
Structural Steel |
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420 |
Minimum yield strength (Reh) in Mpa up to 16mm |
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…M.. |
Longitudinal Charpy V-notch impacts at a temperature not lower than minus 20 Celsius |
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…ML.. |
Longitudinal Charpy V-notch impacts at a temperature not lower than minus 50 Celsius |
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Additional Options |
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…Z.. |
Grade with improved properties perpendicular to the surface |
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Mechanical Properties |
(1 MPa = 145.03 PSI) |
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Grade |
Yield Strength (Mpa) in Nom. Thicknesses (mm) |
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>3 - <16 |
>16 - <40 |
>40 - <63 |
>63 - <80 |
>80 - <100 |
>100 - <150 |
>150 - <200 |
>200 - <250 |
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S420N |
420 min. |
400 min. |
390 min. |
370 min. |
360 min. |
340 min. |
330 min. |
320 min. |
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S420NL |
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S420M |
380 min. |
370 min. |
365 min. |
(--- |
(--- |
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S420ML |
(--- |
(--- |
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Grade |
Tensile Strength (Mpa) in Nom. Thicknesses (mm) |
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>3 - <16 |
>16 - <40 |
>40 - <63 |
>63 - <80 |
>80 - <100 |
>100 - <150 |
>150 - <200 |
>200 - <250 |
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S420N |
520 - 680 |
500 - 650 |
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S420NL |
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S420M |
520 - 680 |
500 - 660 |
480 - 640 |
470 - 630 |
460 - 620 |
(--- |
(--- |
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S420ML |
(--- |
(--- |
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Chemical Composition |
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Grade |
Thickness (mm) |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
Mo |
V |
Al |
Cu |
Ti |
Nb |
N |
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S420N |
<250 |
.20 max |
1.00 - 1.70 |
.30 max |
.025 max |
.60 max |
.30 max |
.80 max |
.10 max |
.20 max |
.02 max |
.55 max |
.05 max |
.05 max |
.025 max |
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S420NL |
<250 |
.20 max |
1.00 - 1.70 |
.25 max |
.020 max |
.60 max |
.30 max |
.80 max |
.10 max |
.20 max |
.02 max |
.55 max |
.05 max |
.05 max |
.025 max |
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S420M |
<150 |
.16 max |
1.70 max |
.30 max |
.025 max |
.50 max |
.30 max |
.80 max |
.20 max |
.12 max |
.02 max |
.55 max |
.05 max |
.05 max |
.025 max |
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S420ML |
<150 |
.16 max |
1.70 max |
.25 max |
.020 max |
.50 max |
.30 max |
.80 max |
.20 max |
.12 max |
.02 max |
.55 max |
.05 max |
.05 max |
.025 max |
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Charpy V-notch Testing |
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Grade |
Elongation in Nom. Thicknesses (mm) |
Grain |
@ Degrees |
Min. Absorbed Energy |
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>3 - <16 |
>16 - <40 |
>40 - <63 |
>63 - <80 |
>80 - <100 |
>100 - <150 |
>150 - <200 |
>200 - <250 |
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S420N |
19 min (Longitudinal) |
18 min (Longitudinal) |
6 min |
(-20 Celsius |
40 J |
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S420NL |
6 min |
(-50 Celsius |
27 J |
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S420M |
19 min (Longitudinal) |
(--- |
(--- |
6 min |
(-20 Celsius |
40 J |
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S420ML |
(--- |
(--- |
6 min |
(-50 Celsius |
27 J |
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