S420NL plate is a fine grain structural steel, which is a high strength steel plate under European standard EN 10025.
S420NL steel plate has higher mechanical properties under the condition of normalizing or normalizing plus tempering.
The properties and element content of S420NL material are similar to that of Q420E grade in China.
What is the difference between S420N plates and S420NL steel plate
S420 steel plate shall be classified as alloy special steel. S420 steel is supplied in the following grades: when the temperature is not lower than - 20℃, the minimum value of impact energy is indicated by N, that is S420N. When the temperature is not lower than - 50℃, the minimum impact energy is indicated by NL, that is S420NL.
Chemical composition of S420NL and S420N steel plate
| Grade | C | Si | Mn | P | S | Ni | Cr |
| ≤0.2 | ≤0.6 | 1-1.7 | ≤0.03 | ≤0.025 | ≤0.8 | ≤0.3 | |
| S420N | Mo | Cu | Nb | V | Ti | Alt | N |
| ≤0.1 | ≤0.55 | ≤0.05 | ≤0.2 | ≤0.05 | ≥0.02 | ≤0.025 |
| Main chemical elements composition of S420NL steel plate | ||||||
| C | Si | Mn | P | S | Nb | V |
| 0.20 | 0.60 | 1.00-1.70 | 0.025 | 0.020 | 0.05 | 0.20 |
| Al(total) | Ti | Cr | Ni | Mo | Cu | N |
| ≥0.02 | 0.05 | 0.30 | 0.80 | 0.10 | 0.55 | 0.025 |
Mechanical properties of S420NL and S420N steel plate
| Grade | Thickness(mm) | Yield strength ReH(MPa) | Tensile strength Rm(MPa) | Elongation A% | Impact temperature ℃ | Impact energy Akv(J) |
| S420N | ≤16 | ≥420 | 520-680 | ≥19 | -20 | ≥40 Longitudinal; Horizontal: Akv≥20J |
| >16-40 | ≥400 | |||||
| >40-63 | ≥390 | |||||
| >63-80 | ≥370 | ≥18 | ||||
| >80-100 | ≥360 | |||||
| >100-150 | ≥340 | 500-650 | ||||
| >150-200 | ≥330 | |||||
| >200-250 | ≥320 |
| Thickness (mm) | ||||||||
| S420NL | ≤ 16 | > 16 ≤ 40 | > 40 ≤ 63 | > 63 ≤ 80 | > 80 ≤ 100 | > 100 ≤ 150 | > 150 ≤ 200 | > 200 |
| Yield strength (≥Mpa) | 420 | 400 | 390 | 370 | 360 | 340 | 330 | 320 |
| ≤ 100 | > 100 ≤ 200 | > 200 | ||||||
| Tensile strength (Mpa) | 520-680 | 500-650 | 500-650 | |||||
Email: alloy@gneesteelgroup.com
Whatsapp (WeChat) :+86-15824687445
FAQ
Q: What is S420NL material?
A: S420NL 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, S420NL steel grade has more yield and tensile strength. The equal grade of S420NL is S420ML.
Q: What is material grade S420?
A: S420 Structural steels grades are high strength weldable fine grain structural steels. Each grade can be obtained with guaranteed impact properties at -20°C (N or M grades), or for low-temperature applications at -50°C (NL or ML grades).
| Other steel plate | ||||
| Name | Material | Specification (mm) | Tons | Remark |
| Low Alloy | Q345A, Q345B, Q345C, Q345D, Q345E, Q390, Q420, Q460C, ST52-3, S355J2+N, SS400, SA302GrC, S275NL, 35CrMo | 6 - 350 | 5788.56 | Normalizing, tempered ,controlled rolling, hot rolling , Hot rolling,1st inspection, 2nd inspection, 3rd inspection |
| Pressure Vessel Plate | Q245R, Q345R, Q370R, 16MnDR, 09MnNiDR, 15CrMoR, 14Cr1MoR, 12Cr2Mo1R, SA516Gr60, SA516Gr70, SA516Gr485, SA285, SA387Gr11, SA387Gr12, SA387Gr22, P265,P295,P355GH,Q245R(R-HIC),Q345R(R-HIC) | 3 - 300 | 8650 | Normalizing, tempered ,controlled rolling, hot rolling , Hot rolling,1st inspection, 2nd inspection, 3rd inspection |
| High-Strength Plate | WH785D/E,Q960D/E, Q890D/E,WH60D/E,WH70B,Q550D,Q590D,Q690D/E | 8 - 120 | 3086.352 | Quenched and tempered |
| Wear-Resistant Plate | NM360, NM400, NM450, NM500 | 6 - 150 | 3866.297 | Quenched and tempered |
| Bridge Plate | Q235qC, Q345qC, Q370qC, Q420qC, Q345qDNH, Q370qDNH, A709 - 50F - 2, A709 - 50T - 2 | 8 - 200 | 2853.621 | Hot rolling, normalized ,hot rolling controlled rolling, quenched and tempered + toughness and brittleness |
