As to S275JR VS S355JR, actually they are totally not same thing. S275JR is carbon steel, while S355JR is low alloy steel. Both carbon steel S275JR and S355JR low alloy steel are under EN10025-2 standard.
The S355JR low alloy steel is higher steel grade than carbon steel S275JR.
Carbon steel S275JR VS S355JR low alloy steel in chemical composition:
| Grade | C (t≤16mm) | Si | Mn | P | S | Cu | N |
| S275JR | 0.24 max | - | 1.60 max | 0.045 max | 0.045 max | 0.60 max | 0.014 max |
| S355JR | 0.27 max | 0.6 | 1.70 max | 0.045 max | 0.045 max | 0.60 max | 0.014 max |
Carbon steel S275JR VS S355JR low alloy steel in mechanical properties:
| Grade | Yield strength ReH/(N/mm2) (t≤16mm) min | Tensile strength Rm/(N/mm2) (3mm≤t≤16mm) | Elongation A/% (3mm≤t≤40mm) min | Charpy V test | |
| Temperature/℃ | Impact energy (Longitudinal)/J min | ||||
| S275JR | 275 | 410-560 | 23 | 20 | 27 |
| S355JR | 355 | 470-630 | 22 | 20 | 27 |
Gnee steel has been engaged in steel materials for more than 18 years. For any information about carbon steel S275JR and S355JR low alloy steel, such as carbon steel S275JR chemical composition,
S355JR low alloy steel mechanical property, carbon steel S275JR specification, S355JR low alloy steel data sheet, carbon steel S275JR and S355JR low alloy steel price, please feel free to consult BBN steel.
