Q/BQB 420-2009 DD51D+Z steel is one kind of galvanized steel. The tensile strength of DD51D+Z steel is 270-500Mpa. The following table is the chemical composition of DD51D+Z steel.
Grade |
C max. |
Si max. |
Mn max. |
P max. |
S max. |
Ti max. |
DD51D+Z |
0.12 |
0.50 |
0.60 |
0.10 |
0.045 |
0.30 |