From: Understanding dual precipitation strengthening in ultra-high strength low carbon steel containing nano-sized copper precipitates and carbides
Steel
C
Mn
Si
Mo
Ti
Cu
Al
Fe
CMn
0.07
1.47
0.32
–
0.04
Bal.
TiMo
1.34
0.20
0.09
1.7 Cu
0.06
1.50
1.69
1.7 CuTiMo
1.54
0.33
0.21
0.12
1.72
0.03