JIS G3106 Steel Plate
JIS G3106 Steel Plate
JIS G3106 specification is for hot rolled carbon steel plate for welded structrual purposes, steel grades include: SM400A/B/C, SM490A/B/C, SM490YA/YB, SM520B/C,SM570.
Appication:
SM400A/B/C: Carbon steel shapes, plates, and bars of structural quality for use in riveted, bolted, or welded construction of bridges and buildings, and for general structural purposes.
SM490A/B/C: Hot rolled steel plate used for outside engineering, ships, military (armored) construction.
SM490YA/YB: Super heavy steel plate for welded structure of bridges, highway construction.
SM520B/C: Super heavy steel plate for welded structure, it is also low carbon high strength structural steel with good cold forming property.
SM570: Low alloy and high strength steel plate, heavy and wide plate for machinery parts, boom, crane, chassis, buildings bridges and mobile equipment.
JIS G3106 Chemical Composition:
| Symbol | Chemical composition | ||||
|---|---|---|---|---|---|
| C max | Simax | Mn | P max | S max | |
| SM400A | 0.23 | - | 2.5xc min | 0.035 | 0.035 |
| SM400B | 0.20 | 0.35 | 0.6-1.40 | 0.035 | 0.035 |
| SM400C | 0.19 | 0.35 | 1.4 max | 0.035 | 0.035 |
| SM490A | 0.20 | 0.55 | 1.6 max | 0.035 | 0.035 |
| SM490B | 0.19 | 0.55 | 1.6 max | 0.035 | 0.035 |
| SM490C | 0.19 | 0.55 | 1.6 max | 0.035 | 0.035 |
| SM490YA | 0.20 | 0.55 | 1.6 max | 0.035 | 0.035 |
| SM490YB | 0.20 | 0.55 | 1.6 max | 0.035 | 0.035 |
| SM520B | 0.20 | 0.55 | 1.6 max | 0.035 | 0.035 |
| SM520C | 0.20 | 0.55 | 1.6 max | 0.035 | 0.035 |
| SM570 | 0.19 | 0.55 | 1.6 max | 0.035 | 0.035 |
JIS G3106 Mechanical Property:
| Symbol | Yield point or proof stressN/mm2 (min) | Tensile strengthN/mm2 | Elongation | |||
|---|---|---|---|---|---|---|
| Thickness of steel mm | Thickness of steel mm | thinckness | Test piece | % min | ||
| 16 or under | Over 16-40 | 100 or under | ||||
SM400A SM400B SM400C |
245 | 235 | 400-510 | <5 | NO.5 | 23 |
| ≥5 <16 | NO.1A | 19 | ||||
| ≥16 <50 | NO.1A | 22 | ||||
SM490A SM490B SM490C |
325 | 315 | 490-610 | <5 | NO.5 | 22 |
| ≥5 <16 | NO.1A | 17 | ||||
| ≥16 <50 | NO.1A | 21 | ||||
SM490YA SM490YB |
365 | 355 | 490-610 | <5 | NO.5 | 19 |
| ≥5 <16 | NO.1A | 15 | ||||
| ≥16 <50 | NO.1A | 19 | ||||
SM520B SM520C |
365 | 355 | 520-640 | <5 | NO.5 | 19 |
| ≥5 <16 | NO.1A | 15 | ||||
| ≥16 <50 | NO.1A | 19 | ||||
| SM570 | 460 | 450 | 570-720 | <5 | NO.5 | 19 |
| ≥5 <16 | NO.5 | 26 | ||||
| ≥16 <50 | NO.5 | 20 | ||||
JIS G3106 Charp Absorption Energy:
| Symbol of grade | Test temperature °C | Charp Absorption Energy J (min) | Test piece |
|---|---|---|---|
| SM400B | 0 | 27 | No.4 in rolling direction |
| SM400C | 0 | 47 | |
| SM490B | 0 | 27 | |
| SM490C | 0 | 47 | |
| SM490YB | 0 | 27 | |
| SM520B | 0 | 27 | |
| SM520C | 0 | 47 | |
| SM570 | -5 | 47 |
JIS G3106 Equivalent Steel Standard:
| ASTM | DIN | BS EN | AFNOR | UNI | JIS | GOST |
|---|---|---|---|---|---|---|
| A 570 Gr.40 |
S275JRSt44-2 | Fe 430 B FN 1449 43/25 HR |
E 28-2 | AE 275 B Fe 430 B FN |
SM 400 A;B;C | St4ps; sp |
| A 572 Gr.65 | E335 (Fe 590-2) St 60-2 |
Fe 60-2 4360-55 E; 55 C |
A 60-2 | Fe 60-2 Fe 590 |
SM 570 | St6ps; sp |
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