S355J2W steel is a medium tensile, low carbon manganese atmospheric corrosion resistant steel. S355J2W steel is readily weldable and possess good impact resistance, including in low temperatures. Unlike unalloyed constructional steel, when copper is added as an alloy in S355J2W steel, there would automatically form a barrier layer which can prevent atmosphere, moisture and other corrosion elements.
Main chemical elements composition of EN standard atmospheric corrosion resistant S355J2W steel:
| C | Si | Mn | P | S | N | Cr | Cu |
| 0.16 | 0.50 | 0.50-1.50 | 0.030 | 0.030 | 0.009 | 0.40-0.80 | 0.25-0.55 |
Mechanical properties of EN standard atmospheric corrosion resistant S355J2W steel:
| Grade | Min Yield strength in different thickness | Min tensile strength in different thickness | Elongation in different thickness | |||||||||||||
| S355J2W | ≤ 16 | > 16 | > 40 | > 63 | > 80 | > 100 | ≤ 3 | > 3 | > 100 | ≤ 1.5 | > 2 | > 2.5 | > 3 | > 40 | > 63 | > 100 |
| ≤ 40 | ≤ 63 | ≤ 80 | ≤ 100 | ≤ 150 | ≤ 100 | ≤ 150 | ≤ 2.5 | ≤ 3 | ≤ 40 | ≤ 63 | ≤ 100 | ≤ 150 | ||||
| 355 | 345 | 335 | 325 | 315 | 295 | 510-680 | 470-630 | 450-600 | 16 | 17 | 18 | 22 | 21 | 20 | 18 | |
S355J2W steel V shaped impact test temperature is at -20 degree and min energy is 27J.
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