SM400/SM490 Hot rolled steel plate /sheet always be used in the following field
(1)SM400 Hot rolled steelused for metallurgical, mechanical, electrical construction field
(2)SM490 Hot rolled steel used for ships, military (armored) Construction
(3)SM400/SM490 steel plate /sheet used for outside engineering, machine tool base, automobile rear of products
|
Symbol
|
Chemical composition
|
||||
|
C
max
|
Si
max
|
Mn
|
P
max
|
S
max
|
|
|
0.23
|
-
|
2.5xc min
|
0.035
|
0.035
|
|
|
0.20
|
0.35
|
0.6-1.40
|
0.035
|
0.035
|
|
|
0.19
|
0.35
|
1.4 max
|
0.035
|
0.035
|
|
|
0.20
|
0.55
|
1.6 max
|
0.035
|
0.035
|
|
|
0.19
|
0.55
|
1.6 max
|
0.035
|
0.035
|
|
|
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
|
|
0.20
|
0.55
|
1.6 max
|
0.035
|
0.035
|
|
|
0.20
|
0.55
|
1.6 max
|
0.035
|
0.035
|
|
|
0.19
|
0.55
|
1.6 max
|
0.035
|
0.035
|
|
|
Symbol
|
Yield point or proof stress
N/mm2 (min)
|
Tensile strength
N/mm2
|
Elongation
|
|||
|
Thickness of steel mm
|
Thickness of steel mm
|
thinckness
|
Test piece
|
% min
|
||
|
16 or under
|
Over 16-40
|
100 or under
|
||||
|
245
|
235
|
400-510
|
<5
|
NO.5
|
23
|
|
|
≥5 <16
|
NO.1A
|
19
|
||||
|
≥16 <50
|
NO.1A
|
22
|
||||
|
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
|
||||
|
365
|
355
|
520-640
|
<5
|
NO.5
|
19
|
|
|
≥5 <16
|
NO.1A
|
15
|
||||
|
≥16 <50
|
NO.1A
|
19
|
||||
|
460
|
450
|
570-720
|
<5
|
NO.5
|
19
|
|
|
≥5 <16
|
NO.5
|
26
|
||||
|
≥16 <50
|
NO.5
|
20
|
||||
|
Symbol of grade
|
Test temperature °C
|
Charp Absorption Energy J (min)
|
Test piece
|
|
0
|
27
|
No.4 in rolling direction
|
|
|
0
|
47
|
||
|
0
|
27
|
||
|
0
|
47
|
||
|
SM490YB
|
0
|
27
|
|
|
0
|
27
|
||
|
0
|
47
|
||
|
-5
|
47
|
Source:
Tags: SM490, SM490 steel plate
