High-strength thick steel plate with excellent crack-arrest property and manufacturing method thereof
A crack arresting, thick steel plate technology, applied in the field of high-strength thick steel plate and its manufacturing, can solve the problems of unspecified toughness and strength, unable to guarantee the uniformity of properties in the thickness direction, etc., to achieve stable strength and toughness, fine grain, low temperature Impact toughness and uniform strength
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[0035] Table 1 shows the chemical composition of the high-strength thick steel plate example with excellent crack arrestability.
[0036] Table 1 embodiment steel chemical composition (%)
[0037] Example
C
Si
mn
P
S
Ni
Cu
Nb
Ti
als
N
1
0.08
0.33
1.50
0.014
0.002
0.34
0.24
0.04
0.013
0.031
0.003
2
0.07
0.28
1.32
0.012
0.002
0.85
0.15
0.03
0.011
0.027
0.004
3
0.09
0.45
1.12
0.011
0.002
0.54
0.27
0.03
0.022
0.025
0.005
4
0.13
0.31
1.22
0.012
0.002
0.70
0.16
0.04
0.011
0.045
0.003
5
0.15
0.16
1.24
0.012
0.002
0.64
0.14
0.04
0.021
0.021
0.006
6
0.05
0.22
1.45
0.011
0.002
0.80
0.18
0.04
0.011
0.023
0.003
[0038] A method for manufacturing a high-strength thick steel plate with excellent crack arrest...
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