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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