ASTM A36 S275JR are common used steel materials in construction. ASTM A36 steel is produced according to ASTM A36/ A36M standard, while S275JR steel is produced according to EN10025-2 standard. Both ASTM A36 S275JR steel materials are mild steel. They have a lot in common and also many differences.
First, let us look at ASTM A36 S275JR chemical composition and ASTM A36 S275JR mechanical properties:
ASTM A36 S275JR S235JR chemical composition %:
| Grade | C (t≤16mm) | Si | Mn | P | S | Nb | V | Ti | Cr | Ni | Cu | N | Mo | Other |
| ASTM A36 | 0.26 max | 0.40 max | - | 0.04 max | 0.05 max | - | - | - | - | - | 0.20 min | - | - | - |
| S235JR | 0.19 max | - | 1.5 max | 0.045 max | 0.045 max | - | - | - | - | - | 0.60 max | 0.014 max | - | - |
| S275JR | 0.24 max | - | 1.60 max | 0.045 max | 0.045 max | - | - | - | - | - | 0.60 max | 0.014 max | - | - |
ASTM A36 S275JR S235JR 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 | ||||
| ASTM A36 | 250 | 400-550 | 23 | - | - |
| S235JR | 235 | 360-510 | 26 | 20 | 27 |
| S275JR | 275 | 410-560 | 23 | 20 | 27 |
For ASTM A36 S275JR chemical composition, A36 steel carbon content is higher than S275JR steel, other elements such as Mn, Si, Cu, etc. is lower than that of EN10025-2 S275JR steel. For ASTM A36 S275JR S235JR mechanical properties, S275JR yield strength is higher than A36 yield strength, and S275JR tensile strength is also higher than A36 tensile strength. EN10025-2 S275JR steel has better comprehensive performance than ASTM A36 steel. From the comparison table, it is not hard to find that Astm A36 equivalent grade in EN10025-2 is S235JR.
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