A Dislocation-Based Theory for the Deformation Hardening Behavior of DP Steels: Impact of Martensite Content and Ferrite Grain Size

Table 2

Nominal chemical composition (wt%), Fe bal.

Grade	C	Mn	Si	Nb
DP500	0.08	0.65	0.3	—
DP600	0.11	0.90	0.4	—
DP800	0.13	1.50	0.2	0.015
DP980	0.15	1.50	0.5	0.016