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.
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