There are various JIS G3101 Ss400 equivalent steel materials on the market. The ASTM equivalents for JIS G3101 SS400 steel are ASTM A36 and ASTM A283C; the EN equivalent for JIS G3101 SS400 steel is S235JR. The DIN equivalent for JIS G3101 SS400 steel is ST37-2; and the GB equivalent for JIS G3101 SS400 steel is Q235B.
JIS G3101 SS400 equivalent steel materials chemical composition and mechanical properties are as below:
ASTM A36 steel equivalent grade chemical composition:
| Grade | C (t≤16mm) | Si | Mn | P | S | Cu | N |
| SS400 | - | - | - | 0.050 max | 0.050 max | - | - |
| A36 | 0.26 max | 0.40 max | - | 0.040 max | 0.050 max | 0.20 min | - |
| A283C | 0.24 max | 0.04 max | 0.09 max | 0.035 max | 0.040 max | 0.20 min | - |
| S235JR | 0.19 max | - | 1.5 max | 0.045 max | 0.045 max | 0.60 max | 0.014 max |
| ST37-2 | 0.21 max | - | - | 0.065 max | 0.065 max | - | 0.010 max |
| Q235B | 0.20 max | 0.35 max | 1.40 max | 0.045 max | 0.045 max | - | - |
ASTM A36 steel equivalent grade mechanical properties:
| Grade | Yield strength ReH/(N/mm2) | Tensile strength Rm/(N/mm2) | Elongation A/% | Charpy V test | Impact energy |
| (t≤16mm) min | (3mm≤t≤16mm) | (3mm≤t≤40mm) min | Temperature/℃ | (Longitudinal)/J min | |
| SS400 | 245 | 400-500 | 21 | - | - |
| A36 | 250 | 400-550 | 23 | - | - |
| A283C | 205 | 380-515 | 25 | - | - |
| S235JR | 235 | 360-510 | 26 | 20 | 27 |
| ST37-2 | 235 | 360-510 | 26 | 20 | 27 |
| Q235B | 235 | 370-500 | 26 | 20 | 27 |
JIS G3101 SS400 equivalent steel materials are the most common steel materials in construction, machinery and so on industries. The JIS G3101 SS400 equivalent steel materials have certain elongation, strength, good toughness and castability, and are easy to stamp and weld. They are widely used for welding structural parts with high quality in construction and bridge engineering.
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