S355J2 AR steel is a non-alloy European standard (EN 10025-2) structural steel. S - stands for structural steel. 355 - stands for minimum yield strength (though it will vary based on thickness, refer below section for more details). S355J2 AR steel can withstand an impact energy of 27J at -20°C.
S355J2 AR steel is most commonly used after S235 where more strength is needed. S355J2 AR steel got great weldability and machinability, let us see more mechanical details of this steel.
S355J2 AR steel machinability:
| |
Minimum yield strength Reh |
Tensile strength Rm |
Minimum elongation - A |
Notch impact test |
| MPa |
MPa |
Lo = 5,65 * √So (%) |
| Grade |
Nominal thickness |
Nominal thickness |
Nominal thickness |
Temperature |
Min. energy |
| mm |
mm |
mm |
| |
≤16 |
>16 |
>40 |
>63 |
>80 |
>100 |
>3 |
>100 |
>3 |
>40 |
>63 |
>100 |
°C |
J |
| ≤40 |
≤63 |
≤80 |
≤100 |
≤125 |
≤100 |
≤125 |
≤40 |
≤63 |
≤100 |
≤125 |
| S355J2 |
355 |
345 |
335 |
325 |
315 |
295 |
470-630 |
450-600 |
22 |
21 |
20 |
18 |
-20 |
27 |
S355J2 AR steel posess a good weldability with max CEV =0.47 for all variants. S355J2 AR steel is recommended for structural application in freight cars, transmission towers, dump trucks, cranes, trailers, bull dozers, excavators, forestry machines, railway wagons,highway bridges, building structures, oil and gas platforms, offshore structures, power plant, lifting equipments and port equipment.
