JIS G3106 steel plate chemical composition:
| Grade | C | Si | Mn | P | S |
| SM490YA | 0.20-0.22 | 0.55 | 1.60 | 0.035 | 0.035 |
| SM490YB | 0.20 max | 0.55 | 1.60 | 0.035 | 0.035 |
| SM570 | 0.18 max | 0.55 | 1.60 | 0.035 | 0.035 |
| SM400A | 0.23-0.25 | - | 2.5 | 0.035 | 0.035 |
| SM520B | 0.20max | 0.55 | 1.6 | 0.035 | 0.035 |
JIS G3106 steel plate mechanical properties:
| Grade | Yield strength Mpa | Tensile strength | ||||||
| ≤16 | 16-40 | 40-75 | 75-100 | 100-160 | 160-200 | ≤100 | 100-200 | |
| SM490YA | 365min | 355min | 335min | 325min | - | - | 490-610 | - |
| SM490YB | 365min | 355min | 335min | 325min | - | - | 490-610 | - |
| SM570 | 460min | 450min | 430min | 420min | - | - | 570-720 | - |
| SM400A | 245min | 235min | 215min | 215min | 205min | 195min | 400-510 | 400-510 |
| SM520B | 365min | 355min | 335min | 325min | - | - | 520-640 | - |
JIS G3106 steel equivalent grades:
| ASTM | DIN | BS EN | AFNOR | UNI | JIS | GOST |
| A570 Gr.50 | S275JRSt44-2 | Fe430BFN 1449 43/25 HR | E 28-2 | AE 275 B Fe430 B FN | SM400 A;B;C | St4ps; sp |
| A572 Gr.65 | E335(Fe590-2) St 60-2 | Fe 60-2 4360-55 E; 55 C | A 60-2 | Fe 60-2 Fe 590 | SM 570 | St6ps; sp |
JIS G3106 steel plate application:
JIS G3106 steel plate is for riveted, bolted or welded structures and general structural purposes in bridges and buildings.
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