SM490B Low Alloy High Strength Plate
The minimum yield strength of S420N high-strength low-alloy structural steel plates reaches 420Mpa. It is mainly used for welded components that have to withstand high strains.
If you are satisfied with our S420N low alloy steel material, welcome to place an order with us. As one of the best high strength low alloy steel plate manufacturers and suppliers in China, we have a large number of hot-selling products for you to choose from. For detailed chemical composition and free samples, please contact our factory immediately. We provide competitive prices and good services.
S420N high strength alloy steel chemical composition
| 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 |
S420N hSLA steel plate Mechanical property
| 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 |
S420N hSLA structural steel thickness sizes
| Size (in inches) | Size (in mm) |
|---|---|
| .125" | 3.18mm |
| .134" | 3.40mm |
| .156" | 3.96mm |
| .187" | 4.75mm |
| .250" | 6.35mm |
| .312" | 7.92mm |
| .375" | 9.53mm |
| .500" | 12.7mm |
| .600" | 15.9mm |
| .750" | 19.1mm |
| .875" | 22.2mm |
| 1" | 25.4mm |
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