S355JR steel is very widely used in dump trucks, cranes, trailers, transmission towers, bull dozers, excavators, lifting equipment and port equipment, etc. S355JR steel has a lot of equivalent materials such as Q345B, A572 Gr 50, ST52-3 and so on.
Other than above equivalent grades, S355JR steel also has JIS equivalent grade. Do you know what is S355JR equivalent material in JIS standard?
After checking the material chemical composition and mechanical properties etc. aspects, it is found that the most close JIS standard steel to S355JR is SM490B, and then SS490.
Chemical composition of S355JR equivalent material in JIS standard:
| Grade | C (t≤16mm) | Si | Mn | P | S | Cu | N |
| S355JR | 0.27 max | 0.60 max | 1.70 max | 0.045 max | 0.045 max | 0.60 max | 0.014 max |
| SM490B | 0.20 max | 0.55 max | 1.60 max | 0.035 max | 0.035 max | - | - |
Mechanical properties of S355JR equivalent material in JIS standard:
| Grade | Yield strength ReH/(N/mm2) (t≤16mm) min | Tensile strength Rm/(N/mm2) (3mm≤t≤16mm) | Elongation A/%(3mm≤t≤40mm) min |
| S355JR | 275 | 450-680 | 14 |
| SM490B | 275 | 490-610 | 17 |
The chemical composition and mechanical properties of JIS SM490B can completely meet demands of S355JR steel. In other words, most role of S355JR steel can also be replaced by SM490B steel. In actual production, it is better to consult professional steel materials supplier such as BBN steel, for suitable material choose between S355JR equivalent material in JIS standard or other standards.
Just like you, 70% customers choose long-term cooperation with BBN steel not only for our good product and service quality, good reputation in the international market, but also for our experienced one-stop raw material supply and further steel processing!
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