Compare / SS400 vs S235
SS400 vs S235
JIS G 3101 · Steel
Japan's general structural steel: 245 MPa yield up to 16 mm, 400–510 MPa tensile. Not intended for welded primary structures.
EN 10025-2:2019 · Steel
Mild structural steel: 235 MPa minimum yield up to 16 mm, 360–510 MPa tensile.
ApproximateHigher yield (245 MPa ≤ 16 mm) and tensile (400–510 MPa), but no impact test and almost no chemistry limits: not for welded primary structures.
Mechanical
| Property | Condition | SS400 | S235 | Difference |
|---|---|---|---|---|
| Yield strength ReH | t = 16 mm | ≥ 245MPa1 | ≥ 235MPa2 | −4.1 % |
| t = 40 mm | ≥ 235MPa— | ≥ 225MPa2 | −4.3 % | |
| t = 100 mm | ≥ 215MPa— | ≥ 215MPa1 | same | |
| Tensile strength Rm | t = 3 mm | 400–510MPa1 | 360–510MPa1 | −10 % |
| t = 100 mm | 400–510MPa1 | 360–510MPa2 | −10 % | |
| t = 150 mm | 400–510MPa1 | 350–500MPa1 | −13 % | |
| t = 250 mm | 400–510MPa1 | 340–490MPa1 | −15 % | |
| t = 400 mm | 400–510MPa1 | 330–480MPa1 | −18 % |
Rows are matched by condition (thickness band, temperature, product form). A dash means the grade has no sourced value for that condition. Differences are S235 relative to SS400; for ranges the lower bound is compared.